Trump administration lifts export restrictions on Anthropic's Mythos and Fable AI models

Trump drops restrictions on Anthropic's Mythos and Fable models

The US has lifted a requirement that Anthropic obtain a license before exporting its Mythos and Fable models abroad, a requirement that effectively cut off public access to what are widely considered the most advanced AI models released to date. The AI lab said it would begin restoring access to the models on Wednesday, July 1. On June 12, the US government had added the products to its list of export-restricted technologies, meaning they could no longer be made available to foreign nationals without special approval. Complying with that rule proved impractical at scale, forcing Anthropic to end public access to the models altogether. Now, after weeks of talks, Secretary of Commerce Howard Lutnick said Anthropic "has agreed to proactively detect and address security risks associated with the models; to work diligently with the U.S. government on protocols and standards and releases for Mythos, Fable and future models; and to inform the US government of any malicious activity." Anthropic had already publicly pledged to do much of this voluntarily, months before the export rule existed. That's part of why cybersecurity experts were skeptical of the restrictions in the first place. To them, the ban looked less like a security fix and more like leverage, a way for the Trump administration to punish Anthropic for its executives' public criticism of how the government, and the president's political opponents, might use the technology. Mythos was originally made available to a select group of organizations beginning in April to allay concerns about its ability to identify and exploit vulnerabilities in software, while a version called Fable was released to the public in June with additional security guardrails. However, with Asian AI companies beginning to release their own AI models approaching Mythos-level capabilities -- among them Fugu and Tulonfeng -- the US government was under pressure to ease its restrictions on Anthropic to ensure that American AI could compete globally. Last week, Lutnick cleared Mythos to be released to select customers approved by the White House. OpenAI's latest models were also released to a group of organizations approved by the Trump team, instead of the public. The Trump administration's erratic approach to AI policymaking has left companies across the industry with little clarity about what will govern future model releases. An executive order issued in June that signaled a desire to review models ahead of release was criticized by influential analysts like Dean W. Ball, who recently started a policy position at OpenAI.

The Trump Administration Is Lifting Its Export Controls on Anthropic's Mythos and Fable AI Models

The Trump administration is expected on Tuesday night to lift export controls on Anthropic's two most powerful AI models after the company reached a deal with the Commerce Department, according to a person familiar with the matter. The department will lift restrictions on both the Fable 5 model and the more powerful Mythos 5 model, which has so far been approved for release only to select companies and government agencies, the person said. The move is expected to be communicated in a letter to Anthropic cofounder Tom Brown sent by Commerce Secretary Howard Lutnick, who has led the Trump administration's efforts to resolve the dispute with Anthropic alongside the national cyber director Sean Cairncross. The developments come as Anthropic has been working with the Commerce Department and the White House, the people say, to strengthen safeguards against users bypassing Fable's safety restrictions to access restricted capabilities, especially those related to cybersecurity. Anthropic originally contended that the administration's jailbreak concerns were overblown. The company said it was impossible to ensure there were zero jailbreaks that could unlock the more powerful capabilities of the company's restricted Mythos model, which was approved for limited release to select companies and government agencies last week. In recent weeks, Anthropic changed tack to try to get Fable back online, which has also meant changing the company's communication style with the administration. WIRED previously reported that Anthropic CEO Dario Amodei was recently replaced in meetings with cofounder Tom Brown, who officials liked more on a personal level. Anthropic also assured the administration that it would try to reduce the number of jailbreaks by building more robust safeguards, effectively telling the administration what it wanted to hear rather than relitigating the conceptual issue of whether jailbreaks can be stopped, the people said.

Trump Administration Allows Anthropic to Release Mythos to Select US Organizations

The US government has eased the restrictions it imposed on Anthropic's most advanced AI model, Claude Mythos 5, allowing the company to grant access to more than 100 US organizations, including large corporations and government agencies. In a letter sent to Anthropic's cofounder and chief compute officer Tom Brown obtained by WIRED, Commerce Secretary Howard Lutnick told the AI lab it would permit certain trusted partners to regain access to Mythos because he had "determined that appropriate safeguards are in place." Semafor first reported on the existence of the letter. "Anthropic has worked with the U.S. government to address risks associated with the Covered Models. These efforts have yielded significant progress," Lutnick wrote. However, the White House stopped short of permitting a broader roll out of the model, and said nothing about the fate of Claude Fable 5, the consumer-facing version of Mythos that Anthropic released with significantly more safeguards. Lutnick noted in his letter that all other requirements outlined in the initial directive he sent on June 12 remain in effect. "We received notice from the US government that Mythos 5, our strongest cybersecurity model, can be redeployed to a small group of cyber defenders and infrastructure providers," Anthropic spokesperson Eduardo Maia Silva said in a statement to WIRED. "We are working to provision the approved set of providers and restore their access to Mythos 5 as quickly as possible. We are pleased to see this progress and continue to work with the government to expand access to Mythos 5 and make Fable 5 available for general use again." The partial reinstatement comes roughly two weeks after the White House sent an export control directive to Anthropic that required the company to limit foreign nationals from accessing Claude Mythos and Fable 5, including people working and living in the United States. In his latest letter, Lutnick wrote that organizations approved to use Mythos may now extend access to their foreign national employees, as well as Anthropic's foreign national employees. The Trump administration developed concerns about Anthropic's rollout of Mythos after it learned the company shared access with a South Korean telecommunications firm it believed to have ties to China, WIRED previously reported. After Amazon and the NSA raised concerns that Claude Fable 5, a safeguarded version of Mythos 5, could be jailbroken, the Trump administration became convinced it needed to take action. In recent weeks, Anthropic sent senior members from its cybersecurity and AI safety teams to Washington, DC to meet with Trump administration officials. In addition to Brown,public policy chief Sarah Heck has also been leading the company's discussions with the US Department of Commerce. Getting Mythos 5 back online marks a promising step forward for Anthropic and the White House, but the entire saga has raised broader questions about the overall direction of US AI policy, particularly the extent to which the Trump administration will seek to control future model releases. On Friday, OpenAI announced it was delaying the release of its upcoming GPT 5.6 models, in response to a request from the Trump administration. Dean Ball, head of the strategic futures team at OpenAI and a former White House AI adviser, said in a June 16 blog post that Anthropic's latest spat with the Trump administration has shown frontier AI model developers they "need an explicit green light from the government now." Anthropic's battles with the White House have been costly for the young company's business. It sued the Trump administration earlier this year over a supply chain risk designation it received after trying to set redlines around how military contractors could use its AI models. WIRED previously reported that some Anthropic investors worked over last weekend to determine what the White House's restrictions on Claude Fable 5 meant for Anthropic's corporate future. This is a developing story. Please check back for updates.

Anthropic's Mythos 5 is back

After a rollercoaster negotiation process with the Trump administration that dragged on for two weeks, Anthropic's Mythos 5 is finally back in action -- at least, somewhat, for a select group of organizations, according to a letter from the government to Anthropic that was viewed by The Verge. Fable 5, however -- the public-facing Mythos-class model -- appears to still be in limbo, with no apparent timeline for a rollout agreement. The letter, dated June 26th and sent by Commerce Secretary Howard Lutnick to Anthropic co-founder Tom Brown, who had been recently leading negotiations, states that there's been a "revision to the license requirements" based on the fact that Anthropic has recently "worked with the U.S. government to address risks" associated with Mythos 5 and Fable 5. Anthropic spokesperson Danielle Ghiglieri told The Verge in a statement that the company had "received notice from the US government that Mythos 5, our strongest cybersecurity model, can be redeployed to a small group of cyber defenders and infrastructure providers." She added, "We are working to provision the approved set of providers and restore their access to Mythos 5 as quickly as possible. We are pleased to see this progress and continue to work with the government to expand access to Mythos 5 and make Fable 5 available for general use again." The US government did not lift the export control directive it hit Anthropic with two weeks ago, which barred any foreign national from accessing either model (including Anthropic's own employees). Instead, the government essentially made an exception for Mythos 5, approving a select group of organizations for access the same way it did for OpenAI's GPT-5.6, announced earlier today. Under this exception, Anthropic employees who aren't US nationals and members of the approved organizations who aren't US nationals are all greenlit to access Mythos 5, according to the letter. "These efforts have yielded significant progress," Lutnick wrote. "In addition, Anthropic has committed to work with the U.S. government on protocols and standards and releases for [Mythos-class models]. In light of this progress ... I have determined that appropriate safeguards are in place to permit certain trusted partners to access the Claude Mythos 5 Model." Pressure has been building on the Trump administration to make a change in the case-by-case type of regulatory environment it recently adopted, especially as Anthropic's competitors' cybersecurity-focused models kept getting better and better -- and even pulling ahead of it on some cybersecurity-focused benchmarks. Pressure was also building within the US AI industry, particularly fears about the AI advancements China could make while top US AI labs were sidelined. Plus, there was the fact that top US government departments, like the National Security Agency, had lost access to Mythos 5. Now, Anthropic has essentially the same deal OpenAI has: Release the model in a limited preview setting, for approved organizations only, such as trusted enterprises and the US government itself. Both AI labs hope that more general availability comes soon, both for enterprise deals and for public access (like with Anthropic's Fable 5), but it'll be ultimately up to the Trump administration. Though many have called for AI regulation, including AI labs themselves, a current consensus among some tech leaders is that the past two weeks haven't been the way to do it. In fact, OpenAI wrote in the company's GPT-5.6 blog post, "We don't believe this kind of government access process should become the long-term default. It keeps the best tools from users, developers, enterprises, cyber defenders, and global partners who need them. We are taking this short-term step because we believe it is the strongest path to broader availability in the coming weeks, while we work with the Administration to develop the cyber Executive Order framework and a repeatable process for future model releases." Lutnick wrote in his letter to Anthropic, "All other requirements of the June 12 letter remain in effect until further notice." He added, "I reserve the right to reevaluate and adjust the scope of license requirements on [Mythos 5 and Fable 5], should circumstances change."

Anthropic's Mythos 5 Is Available Again, No Timeline for Fable 5

Mythos 5, Anthropic's most advanced AI model, is now available again to selected partners. Access to Mythos 5 and its general-release counterpart, Fable 5, was cut off earlier this month following a government order. The order reportedly concerned a potential "jailbreak" that would have allowed the model, which drew widespread attention for its ability to spot cybersecurity vulnerabilities, to be misused. The Trump administration was reportedly also concerned about Mythos being used by South Korean telecommunications firm SK Telecom, which it believed had ties to China. Anthropic said it was told to limit access solely to US nationals, excluding foreign nationals residing in the US, forcing a total cutoff for all users. Fable 5 users were given no timeline for when it would become available again, with Anthropic saying only that it was "working with the government" to make it available again. Unlike Fable 5, Mythos 5 was never given a wide release and has so far only been made available to selected partners, such as cybersecurity labs. In a letter shared with Semafor, Commerce Secretary Howard Lutnick said he had "determined that appropriate safeguards are in place to permit certain trusted partners to access the Claude Mythos 5 model." In the letter to Anthropic Chief Compute Officer Tom Brown, Lutnick said there had been "significant progress" in the intense, daily talks between the AI firm and the government since the ban was put in place. We could be seeing the aftereffects of the Trump administration's actions for some time. A legal technology firm called Legion recently filed a lawsuit against the government, claiming that losing access to Fable 5 caused "immediate, irreparable and existential" harm to the company. Anthropic has also recently accused foreign powers of attempting to steal its technology. It recently alleged that Chinese tech giant Alibaba attempted to illicitly extract its Claude AI model capabilities, Reuters reported.

Anthropic Restores Claude Fable 5 After U.S. Lifts Jailbreak-Linked Export Controls

Anthropic is putting Claude Fable 5 back online worldwide. On June 30, the U.S. Commerce Department lifted the export controls it had imposed on Fable and its more tightly controlled sibling Mythos 5 about two and a half weeks earlier. Fable 5 returns to users on Wednesday, July 1, across Claude.ai, the Claude Platform, Claude Code, and Claude Cowork. Export controls restrict who can receive or use a technology. The June 12 order told Anthropic to cut off both models for any foreign national, inside or outside the United States, including its own non-citizen staff. The rule took effect at once, and the company had no reliable way to check every user's nationality in real time, so it shut both models down for everyone. The trigger was a jailbreak: a prompt that gets a model to bypass its safety rules. Amazon researchers found one in Fable 5. By Anthropic's account, the prompt got the model to flag a few software flaws and, in one case, to write code showing how a flaw could be abused. Anthropic played the finding down. It says the same requests work on plenty of weaker models too, including its own Claude Opus 4.8, OpenAI's GPT-5.5, and China's Kimi K2.7. The company calls the flagged behavior routine defensive security work, not a hidden super-capability. The government and the partner that reported the jailbreak saw it as serious enough to justify emergency controls. To settle the concern, Anthropic trained a new safety filter, called a classifier, that watches for the exact technique in the report and blocks it. The company says it now stops that technique in more than 99% of tries, as of the June 30 write-up. Blocked requests get handed to the weaker Opus 4.8 instead, and the user is told. The trade-off is more false alarms on normal coding and debugging. Mythos 5, the same underlying model with fewer safety guardrails, stays on a shorter leash. Access returned June 26 for roughly 100 U.S. companies and federal agencies that defend critical infrastructure. Anthropic says it is still working with the government to widen access. Commerce Secretary Howard Lutnick, who signed off on the reversal, said his department had spent two weeks reviewing the models with Anthropic. In his letter, the company agreed to hunt for security problems on its own, coordinate on future launches, and report any malicious use it spots. The negotiations were reportedly led by co-founder Tom Brown rather than CEO Dario Amodei, who has clashed with the administration for much of the year. The fight was messy from the start. Multiple reports, including from The Wall Street Journal, said Amazon's research and concerns from CEO Andy Jassy helped drive the original order. Former AI czar David Sacks accused Anthropic of having "prioritized the continued offering of the consumer model over safety." Others read it as an overcorrection. University of Sydney AI governance researcher Francesco Bailo told Al Jazeera the reversal looked like the government conceding it had gone too far, and a group of security leaders had signed an open letter asking for the controls to be lifted. Hanging over all of it was competition. The pause landed just as cheap, capable Chinese open-source models were gaining ground, and several executives warned that freezing U.S. models handed rivals free time to catch up. Anthropic is also proposing something the industry has lacked: a shared way to rank how dangerous a jailbreak really is. With Amazon, Microsoft, Google, and other partners, it wants to score each one on four things: * Capability gain: how much further the jailbreak takes a user beyond the tools they already have. * Breadth: how many different attacks the same trick unlocks. * Ease of weaponization: how much skill and effort it takes to turn it into a real attack. * Discoverability: how easy the trick is to find or copy. For the worst cases, such as a jailbreak that enables attacks on power grids or banks, Anthropic says it will start deploying fixes the moment severity is confirmed, and it is standing up a team to watch jailbreak reports around the clock. It also opened a HackerOne program for researchers to report new Fable 5 jailbreaks, and promised the U.S. government earlier access to test future frontier models before release. Anthropic is not the only lab in this position. Days earlier, OpenAI previewed GPT-5.6 to a small, government-approved group rather than the public, citing the same dual-use worry: a model good enough to help defenders patch bugs is also good enough to help attackers find them. The risk is not hypothetical. Earlier this spring, Anthropic tested a prior Mythos model that found and exploited zero-day bugs across every major operating system and browser on command, including a 27-year-old flaw in OpenBSD. Its red team turned freshly disclosed bugs into working exploits in under a day. The immediate crisis is over. The bigger question is not. A June 2 executive order created a voluntary path for companies to have frontier models reviewed before release. It also set up a classified benchmark to decide which models count as "covered," while ruling out any mandatory license to ship one. Fable 5 never went through that path. The government reached for export controls instead. That is the tell: when Washington wants to move fast on a frontier model, it still has no binding process, only improvised ones.

US to lift export controls on Anthropic's Fable AI model on Tuesday, source says

June 30 (Reuters) - The U.S. Commerce Department is expected to lift export controls on Anthropic's Fable 5 AI model on Tuesday, less than three weeks after the company was ordered ⁠to suspend access to its most advanced AI models over national security risks, according to a source familiar with the matter. Anthropic abruptly disabled its Mythos 5 and Fable 5 models following the export-control order ⁠on June 12. On Friday, Anthropic said the U.S. government had allowed it to release its Claude Mythos 5 ⁠artificial intelligence model to some "trusted" U.S. organizations, partially reversing order. Politico reported the possible lifting ⁠of export controls earlier. The White House did not immediately respond ⁠to a request for comment. Reporting by Alexandra Alper, Costas Pitas and Ismail Shakil; editing by Paul Thomasch Our Standards: The Thomson Reuters Trust Principles., opens new tab

White House lifts ban on Anthropic models

The US government has lifted its export controls on Anthropic's leading models, ending a weeks-long impasse between the $1tn AI company and the Trump administration. The US Department of Commerce told Anthropic it had lifted the ban on Tuesday evening, according to people with knowledge of the matter, allowing the AI company to re-release its latest model, Fable 5, to the general public. The government allowed Anthropic to re-release Mythos 5, a model with fewer safeguards aimed at enterprise customers, to 100 or so pre-vetted partners last week. Commerce secretary Howard Lutnick placed export controls on Anthropic on June 12, after the government discovered a "jailbreak", or a way of bypassing safety guardrails built into the model. It led Anthropic to pull its powerful model for all users worldwide. The episode inflamed tensions between the White House and Silicon Valley, which has criticised the government's ad hoc approach to regulating frontier AI. It also led to a backlash from foreign governments, which accused the US of punishing its allies by imposing the ban. The export control came after the Trump administration -- under pressure from the AI lobby -- unveiled a voluntary framework for monitoring cutting-edge models, and vowed not to impose a regulatory regime on leading AI companies. But several senior figures in the US government have warned of the risks of releasing such models to the public before their potential to exploit cyber security vulnerabilities in critical industries is properly examined. Anthropic, whose models have propelled the start-up ahead of rivals such as OpenAI, was the first AI group to be hit by a White House ban after it triggered concerns that its technology could be used to exploit cyber security vulnerabilities. OpenAI has also faced restrictions on its new model, GPT-5.6. The San Francisco-based group was asked by the Trump administration to initially limit access to around two dozen government-approved partners. A wider release of GPT-5.6 could come as early as next week, according to a person with knowledge of the matter. Meanwhile, the US and Europe have discussed creating a "trusted partner" scheme for cutting-edge AI models, under which close US allies would receive privileged access to the latest tools.

US government allows Anthropic to redeploy its Mythos and Fable AI models - Engadget

The Commerce Department has lifted their export restrictions. The US government has lifted its export ban on Anthropic's Mythos 5 and Fable 5, allowing the company to give its customers access to the AI models again. If you'll recall, the government ordered Anthropic to suspend all foreign nationals' access to its newly launched AI models, even if they were in the US and working for the company itself, a couple of weeks ago. In response, Anthropic blocked all access to Mythos and Fable to ensure that it's complying with government demands. Now, the company has announced on X that it will start restoring access to its AI models tomorrow, July 1, after receiving permission from the Department of Commerce. Just a few days ago, Anthropic received authorization from the government to redeploy Mythos 5 to "a set of US organizations that operate and defend critical infrastructure." According to reports, that rollout gave around 100 organizations access to the company's most powerful cybersecurity model for Project Glasswing partners again. But the fate of Fable, which Anthropic developed to make Mythos' capabilities available to the public, remained unclear. According to the Financial Times, Commerce Department secretary Howard Lutnick told Anthropic in a letter that he was lifting the ban on Fable after the company had "agreed to proactively detect and address security risks associated with the models." Based on previous reports, his department placed restrictions on Mythos and Fable after being warned by Amazon and other companies that they were vulnerable to jailbreaks and could be used for nefarious purposes. Anthropic had defended its models in the post announcing that it was blocking all access to them and had listed all the safeguards it put in place to make sure they will not be misused.

Trump admin allows Anthropic to release Mythos AI model to some companies, government agencies: Reports

The U.S. government on Friday granted Anthropic permission to release its Mythos 5 model to a group of roughly 100 companies and federal agencies, according to multiple media reports. The decision marks a major step forward in the negotiations between the Trump administration and the artificial intelligence company, which have been engaged in a two-week-long standoff over its latest models. Anthropic said earlier this month that it disabled access to its Fable 5 and Mythos 5 models to comply with an export control directive from the government that cited "national security authorities." The company said it was instructed to suspend all access "by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees." Senior Anthropic staffers flew to Washington D.C. to meet with members of the Trump administration to try to find a way to bring the models back online. The company told CNBC earlier this month that both parties were "working quickly to get this resolved."

Fable and Mythos: Anthropic says US lifts export ban on its advanced AI tools

The US government has lifted export controls on Anthropic's most advanced artificial intelligence (AI) tools, just weeks after ordering it to restrict access to them over national security concerns, the company has said. Anthropic said in a social media post that it will begin restoring access to Claude Fable 5 and Mythos 5 on Wednesday after being notified that the US Department of Commerce has lifted export controls on the two models. They are the firm's most advanced AI tools, which were abruptly suspended on 12 June over concerns that they could be used by hackers to exploit weaknesses in computer systems. The BBC has contacted the Department of Commerce for comment. Mythos and Fable are two of Anthropic's AI models built on its Claude platform - a rival to the likes of OpenAI's ChatGPT and Google's Gemini. Fable 5 is a version of the AI model for the cosumer market, capable of deep reasoning and can perform complex tasks independently. Mythos 5 is a version of the platform designed for businesses and cybersecurity experts. It is said to be able to identify vulnerabilities in computer code and exploit them. The firm previously said that US authorities had not pinpointed specific concerns about its technology even as it ordered both platforms to be suspended around the world. "Our understanding is that the government believes it has become aware of a method of bypassing, or 'jailbreaking' Fable 5," the company said at the time, referring to a process of slipping past software safety restrictions to unblock features. "However, we disagree that the finding of a narrow potential jailbreak should be cause for recalling a commercial model deployed to hundreds of millions of people."

U.S. Lifts Restrictions on Anthropic's Most Powerful A.I. Models

Sheera Frenkel reported from San Francisco and Ana Swanson from Washington. The Commerce Department lifted restrictions on all of Anthropic's artificial intelligence models on Tuesday, allowing the company to bring its most powerful A.I. technologies back online, according to a letter from the government to the company that was viewed by The New York Times. In the letter, Commerce Secretary Howard Lutnick told Anthropic that it would no longer need a license for exports or in-country transfers of its Claude Mythos and Claude Fable A.I. models, reversing an order issued on June 12. "Anthropic has taken steps in close coordination with the U.S. government to address the risks associated with Claude Mythos 5 and Claude Fable 5," Mr. Lutnick wrote. The move was the latest chapter in Anthropic's often prickly relationship with the federal government and is set to de-escalate their feud, paving the way for the company to largely return to business as usual. Citing national security, the Commerce Department had initially ordered Anthropic to suspend access to its latest A.I. models for all foreign nationals. Those controls raised questions about how hands-on the Trump administration might be with the fast-growing artificial intelligence industry. They also could have caused significant problems for technology development at Anthropic, which along with OpenAI is among the world's most influential A.I. companies. Mythos and Fable, which are powerful at identifying security flaws in software, are considered a significant improvement on earlier A.I. models. The restrictions were the second time the Trump administration had targeted Anthropic, which is based in San Francisco. In March, after tense talks over how Anthropic's A.I. could be used in warfare, the Pentagon labeled Anthropic an unacceptable supply chain risk, potentially limiting its use by federal agencies. Anthropic has sued the federal government over that designation. Mr. Lutnick's lifted the export controls after weeks of deliberations between the Commerce Department and the company over safeguards built into its A.I. models. Last week, he announced a partial deal with Anthropic to bring back access to its Mythos model for some clients. In Tuesday's letter, Mr. Lutnick said Anthropic had agreed to take steps including proactively detecting and addressing security risks for the A.I. models, working with the U.S. government on protocols and standards for these and future models, and informing the government of any malicious activity. Mr. Lutnick added that the Commerce Department "reserves the right to re-evaluate the decisions made in this letter" if Anthropic fails to adhere to its commitments or circumstances change. In a statement posted on social media, Anthropic said it would begin restoring access to its A.I. models on Wednesday. "We're grateful to our users for their patience, and to everyone who worked with us on redeploying the models," the company said. President Trump previously took a hands-off approach to the A.I. industry, arguing that it needed to grow unfettered for the United States to compete with China. But this month, he signed an executive order that asked tech companies to voluntarily give the government oversight of new A.I. models before releasing them to the public, in his biggest step toward regulating the technology. Since then, the Trump administration has moved to regulate other Silicon Valley A.I. companies apart from Anthropic. When OpenAI unveiled an A.I. technology called GPT-5.6 Sol this month, it said it would share the technology only with some companies approved by the administration. Meta, the only major U.S. developer of A.I. that has not reached an agreement to voluntarily share its models with the federal government for review, was pressed by the administration last week to begin submitting its models. (The Times has sued OpenAI and Microsoft, claiming copyright infringement of news content related to A.I. systems. The two companies have denied those claims.) Trump officials are still working on a framework for how companies should formally submit new A.I. models for review, and what standards they would be held to, two people familiar with the discussions said. In a social media post on Tuesday, Susie Wiles, the White House chief of staff, expressed her "gratitude to companies across industries who continue to work closely with the White House" to carry out Mr. Trump's executive order on A.I. "Our shared priority remains: get the best tech deployed as quickly and safely as possible," she said.

US lifts export controls on Anthropic's Fable 5, clearing the model's return

The Commerce Department dropped the licence requirement after Anthropic agreed to a set of security commitments, and access starts coming back on 1 July. The US Commerce Department has lifted the export controls it placed on Anthropic's most advanced models, ending a roughly three-week freeze that had pulled the company's Claude Fable 5 offline. Reuters first reported the move on Tuesday, 30 June, citing a person familiar with the decision. Within hours, Anthropic confirmed it on the record in a newsroom post titled "Redeploying Claude Fable 5". The controls covered both Fable 5, the public-facing model, and Mythos 5, the more capable cybersecurity system it is built on. Both were cleared at once. Commerce Secretary Howard Lutnick said an export licence would no longer be required. In exchange, Anthropic agreed to proactively detect and address security risks, help develop standards for future models, and report malicious activity to the government. The restrictions had been imposed around 12 June, roughly two and a half weeks before they were reversed. That earlier order forced Anthropic to shut down both Fable 5 and Mythos 5 almost overnight. The trigger was a jailbreak. Researchers, reportedly at Amazon, found a way to bypass Fable 5's guardrails and reach the underlying cyber capabilities of the Mythos model beneath it. Anthropic disputed the severity of the vulnerability throughout the episode, arguing the flaw did not warrant a full shutdown. Regulators took a harder line, at least initially. The distinction between the two systems matters here. Mythos 5 is the powerful cybersecurity model, and Fable 5 is the consumer-facing layer built on top of it, which is precisely why a jailbreak of one raised alarms about the other. The original clampdown might be tied to concerns that a China-linked group might gain access to Mythos through the exploit. That motive rests on anonymous sourcing and should be treated as reported rather than confirmed. The government's position appears to have softened over the following weeks. Several outlets have framed the reversal as a response to industry criticism and to worries that rivals abroad could gain ground while a leading US model sat frozen, though that framing is analysis rather than official explanation. What comes back, and when? Anthropic said Fable 5 would return globally on 1 July across its products, including the Claude platform, Claude.ai, Claude Code, and Claude Cowork. The rollout is deliberately gradual. Usage will be capped at up to 50% of normal weekly limits through 7 July before returning to full availability, according to the company's post. The three-week saga has been unusually public for an export-control dispute, most of which play out quietly through the Bureau of Industry and Security. Here, the model was named and the company narrated its own suspension and revival in near real time. It also sits inside a broader tightening of US policy on where advanced AI can travel. Washington has spent the past year closing loopholes that let cutting-edge chips and models reach Chinese firms through overseas subsidiaries. For Anthropic, the immediate stakes were commercial as much as regulatory. A frozen flagship model means paying customers routed elsewhere and a competitive gap that widens by the day. The company had also spent much of June in and out of Washington, meeting officials to argue its case as the freeze dragged on. The conditions Lutnick attached to the reversal read as the price of getting back online. Anthropic had already been cleared to restore Mythos 5 for a set of trusted cyber-defence partners before this week, while Fable 5 stayed restricted. Tuesday's decision closes that remaining gap. What is on the record is narrow and clear. Commerce lifted the controls, Lutnick set conditions, Anthropic accepted them, and access is returning. What remains hazier is the politics behind the reversal, from the exact role of the alleged China link to how heavily competitive pressure weighed on the final call. On those points, the sourcing is thinner, and the fuller account will likely emerge over the coming weeks.

Expect Claude Fable 5 to Be Turned Back on in a Matter of Days, Report Says

If you simply can't cope without Anthropic's Claude Fable 5 AI model -- and some actually claim they can't -- you can stop hyperventilating. A new, anonymously sourced report says insiders expect it to be back online this coming week. In addition to Fable 5, Anthropic rescinded access to its Mythos 5 model after the Trump Administration issued its export control directive earlier this month. On Friday, Semafor and CNBC confirmed that Secretary of Commerce Howard Lutnick had released that model from the constraints of that order. "I have determined that appropriate safeguards are in place to permit certain trusted partners to access the Claude Mythos 5 Model," Lutnick wrote in a letter, according to CNBC. A Saturday report by Axios said insider sources were claiming that the same would soon be true of Fable 5. "I'm told that both Lutnick and Treasury Secretary Scott Bessent have helped defuse the fight between the administration and Anthropic," wrote one Axios reporter in that publication's dual-bylined story. An anonymous Trump Administration official told them Anthropic "has worked positively with the government." Fable 5 and Mythos 5 are models in the same "class." Two out of three of those models, Mythos Preview and Mythos 5, have only been released to a small number of organizations for the stated purposes of educating them about the purported cybersecurity dangers they pose on one hand, and on the other hand for the purpose of hardening their own cybersecurity measures against similar threats from frontier AI models. Once again allowing Mythos 5 to be used behind closed doors is a clear step toward the more significant release to the broader public of Fable 5. When that model was released on June 12, it was immediately controversial for many reasons. Anthropic's warnings about its cousin, Mythos Preview, had been widely interpreted as a marketing effort, and Fable 5, with its supposed safeguards was treated as the inevitable retail product made available to generate revenue for the company ahead of its impending IPO. At the same time, the aggressive safeguards -- which undermined certain legitimate-but-risky capabilities -- made smaller organizations who didn't have excess to Mythos-class models without safeguards feel like an aggrieved underclass. But when Fable 5 had only been publicly available for about three days, the White House received reports that Fable's safeguards were easy to bypass, leading to the export control directive. At the time, I characterized this as predictable after Anthropic had treated the release of the Mythos family as a sort of consciousness-raising campaign for the danger of its models. I also contrasted Anthropic's earlier warnings with its later downplaying of the supposed dangers cited by the government as "minor," "previously known," and "relatively simple." The government's directive required Anthropic to prevent users from accessing Mythos-class models if they weren't American nationals, which, in practical terms, forced Anthropic to simply pull the plug on them. That was about two weeks ago. White House insiders have claimed that talks were slowed by CEO Dario Amodei's personality. One anonymous source called him a "weirdo," and sources also claimed he wasn't listening well. Valid criticisms or not, Amodei was apparently replaced at the negotiating table by less abrasive Anthropic team members, and communication has reportedly improved.

US close to allowing Anthropic to restore Fable 5 model, Axios reports

June 27 (Reuters) - The Trump administration is close to allowing Anthropic to restore access to its Fable 5 model, Axios reported on Saturday, citing a source close to the situation. Reuters could not immediately confirm the report. Anthropic and the White House did not immediately respond to requests for comment. Anthropic had abruptly disabled its most advanced AI models -- Mythos ⁠5 and Fable 5 -- for all users after the government's June 12 export control order. Insiders expect the administration's limits on Fable 5 could be lifted as soon as this coming week, the report said. Conversations between the parties are expected to continue over the weekend, and Anthropic expects to restore Fable access soon, the report added, citing a second source. Anthropic said ⁠on Friday that the U.S. government has allowed it to release its Claude Mythos 5 artificial intelligence model to some "trusted" U.S. organizations, partially reversing an order two weeks ago to suspend access over ⁠national security risks. The government is also moving towards allowing Anthropic to release Fable soon, although a timeline is unclear, a source ⁠familiar with the directive told Reuters. Both Fable 5 and Mythos use the same underlying AI model, but Fable ⁠5 is designed to be widely available for public use whereas some safeguards are lifted for Mythos. Reporting by Gnaneshwar Rajan in Bengaluru; Editing by Jan Harvey, Alexandra Hudson Our Standards: The Thomson Reuters Trust Principles., opens new tab

Trump administration allows some access to Anthropic's Mythos

The US government has allowed Anthropic to release its newest model to a small group of partners, easing tensions between the Trump administration and the company amid rising industry unease about Washington's approach to regulating AI. The commerce department gave Anthropic the green light on Friday to put its most advanced model, Mythos 5, back into the hands of 100 or so "trusted partners", including companies and US government departments, according to people with direct knowledge of the matter. The partial release came after Anthropic made progress towards addressing security risks posed by its advanced AI model, the people said. The commerce department said: "In just two weeks, we have worked diligently to ensure America remains the global leader in AI while safeguarding our security." But the model, as well as a rival product OpenAI released on Friday, will not be distributed more widely for now. Instead, the government has asked to vet and approve users, in effect controlling who can and cannot access the technology. It was "bad news" that OpenAI's model would not be more widely available, the group's chief executive Sam Altman said in a social media post on Friday. Altman said providing trusted partners with models first was "reasonable", but added "this isn't quite the process that we think is optimal". The White House has set out plans for a voluntary framework to ensure new models are safe before release but is yet to implement an official process, instead intervening on an ad hoc basis to contain AI risks. The government hit Anthropic with an export control two weeks ago, prompting the AI lab to withdraw its latest models. That export control remains in place, meaning most businesses will not see access reinstated. A publicly accessible version of the model, Fable 5, will not be released at this stage, the people said. Prominent investors and technologists have warned the government's approach risks stymieing US development and gives an advantage to adversaries including China. Venture capitalist Marc Andreessen in an interview on Thursday said: "We're in a weird state of the world where the supposedly totalitarian regime is trying to open up the technology, and the supposedly democratic governance system is trying to restrict and control technology." Andreessen has backed multiple AI groups including OpenAI and is an influential figure in Washington. Dean Ball, a former senior AI adviser to President Donald Trump who will join OpenAI next month, wrote that the administration had created a "de facto involuntary licensing/preapproval regime for frontier models". "The administration itself does not seem to know what safety standards or best practices a company would have to observe for them to be comfortable with the broad release of a model that matches or exceeds Mythos in capability," he added. Anthropic said it was working to restore access to a "small group of cyber defenders and infrastructure providers" as quickly as possible. "We are pleased to see this progress and continue to work with the government to expand access to Mythos 5 and make Fable 5 available for general use again."

White House drops restrictions on Anthropic AI models after two-week ban

Commerce Secretary Howard Lutnick at the Oval Office on June 22. (Mandel Ngan/AFP/Getty Images) The Trump administration will reverse a hastily applied export ban on artificial intelligence company Anthropic's latest technology, allowing the company to once again offer its top AI models to customers around the world. The move ends a more than two-week period in which the U.S. government effectively blocked access to Anthropic's Fable and Mythos AI models, which have triggered national security concerns due to their ability to identify software vulnerabilities. "Over the past two weeks, we have worked closely with Anthropic to analyze and approve Fable 5 to ensure alignment across the US Government and strengthen America's leadership in AI," Commerce Secretary Howard Lutnick said Tuesday in a post on X. Anthropic confirmed in its own social media post that it had received word from the Commerce Department that the ban was being lifted on both the Fable and Mythos models. Neither the Trump administration nor the company provided details on any new controls or safeguards applied to the models. Anthropic's rival OpenAI is still required to get government approval for new users of its own top model, GPT-5.6, announced last week. (The Washington Post has a content partnership with OpenAI.) Anthropic previously agreed to allow the government to approve new customers of Mythos before the June 12 export controls barring access to non-U.S. citizens led the company to shut off access completely. Fable, which has similar capabilities but more safety controls, was previously made publicly available. The Trump administration's moves to closely control whom Anthropic and OpenAI can provide their technology to represent a recent departure from the laissez-faire approach to regulation that President Donald Trump espoused once he returned to office last year. Days after his inauguration, Trump rescinded Biden-era AI rules and said he wanted to unfetter the tech industry to allow it to innovate quickly and beat China in a global AI arms race. In recent months, as concerns around the cybersecurity implications of AI have grown, the White House has transformed itself into being a much more heavy-handed regulator. The ban on Anthropic's Fable and Mythos triggered anger among some tech leaders, who wanted to use the tech to improve their own companies and products. Foreign leaders warned that the restrictions on global use of American AI could put their own countries at a disadvantage and called for individual nations to develop their own technology free from U.S. interference.

Claude Fable 5 cleared to return as US lifts Anthropic's export control restriction

Anthropic has confirmed it will begin restoring access to Claude Fable 5 this Wednesday, July 1, nearly three weeks after US export controls forced the company to take the model offline. Here are the details. In a post on X, Anthropic confirmed that the US Department of Commerce has cleared it to restore access to Claude Fable 5, ending a nearly two-week suspension triggered by export controls. A bit of context Anthropic was forced to pull Claude Mythos 5 and Claude Fable 5 on June 12, following a series of events that have yet to be fully explained. When the company first announced Claude Mythos Preview, it stressed the sensitivity of the model's capabilities and limited access through a program known as Project Glassing. Weeks later, Anthropic released what were widely described as watered-down versions of the Preview model: Mythos 5, which remained restricted to select trusted organizations, and Fable 5, which was made available to Claude subscribers. According to The Wall Street Journal, Amazon researchers subsequently claimed that a series of prompts could get Fable 5 to provide information potentially useful in cyberattacks. Conversations between Amazon CEO Andy Jassy and the White House reportedly helped prompt the export-control directive that forced Anthropic to disable both models. This prompted the Commerce Department to issue an export control directive on June 12, barring any foreign national, whether inside or outside the United States, from accessing the models, including foreign employees at Anthropic. Given just 90 minutes to comply, the company chose to take both models offline entirely. Since then, Anthropic and the White House have been in a lengthy negotiation process, which led to last Friday's announcement that the company had been cleared to release Claude Mythos 5 to over 100 US institutions. At the time, Anthropic said it was continuing to work with the government to make Claude Fable 5 generally available again, which brings us to tonight. Claude Fable 5 set to return on July 1 As first reported by Politico, the Commerce Department was preparing to lift the restrictions on Fable 5 as soon as Tuesday evening: The Trump administration removed export restrictions on Anthropic's Fable 5 and Mythos 5 artificial intelligence models Tuesday evening, a move aimed at defusing weeks of drama surrounding controls on cutting-edge AI. [...] In its letter to the company, Commerce Secretary Howard Lutnick said Anthropic no longer required an export license for its products after agreeing to "proactively detect and address security risks associated with the models," to work with the government on protocols for future releases and to report any "malicious activity" it finds in among its models. Soon afterward, Commerce Secretary Howard Lutnick confirmed on X that officials had spent the previous two weeks working with Anthropic to evaluate and approve the models, though he stopped short of detailing when or how Fable 5 would return.⁠ Anthropic then announced that the export controls on both Fable 5 and Mythos 5 had been lifted and that it would begin restoring access on July 1. The company did not confirm Politico's report that Fable 5 would again be available to general users worldwide, nor did it say whether access would return all at once or through a gradual rollout. It did, however, promise another update soon, which will presumably be published on the company's newsroom. 9to5Mac will continue following the situation and update this post as more information becomes available. For now, users who have been waiting to gain or regain access to Claude Fable 5 should begin to see the model return on Wednesday. Worth checking out on Amazon

U.S. Loosens Restrictions on Anthropic's Mythos A.I. Model

Anthropic and the Trump administration reached a deal on Friday to bring one of the company's most powerful artificial intelligence models back online, after days of tense negotiations. In a letter sent to Anthropic, the Commerce Department gave the San Francisco company permission to restore some clients' access to its Mythos 5 model, which the government restricted two weeks ago because of national security concerns. Talks were still underway to restore access to another powerful Anthropic model, Fable 5, and to provide Mythos to more organizations, said a person familiar with the talks, who spoke on the condition of anonymity because the person was not allowed to discuss them publicly. "Anthropic has worked with the U.S. government to address risks associated with the covered models," said the letter, which Commerce Secretary Howard Lutnick sent to Anthropic on Friday. "These efforts have yielded significant progress." Mr. Lutnick added that Anthropic had committed to working with the U.S. government on protocols for future releases of A.I. models. What you should know about anonymous sources. The Times makes a careful decision any time it shields the identity of a source. The information the source supplies must be newsworthy, credible and give readers genuine insight. Learn more about our process. The letter was reported earlier by Semafor. The deal de-escalates the feud between the Trump administration and Anthropic, one of the most influential A.I. companies. But it may do little to ease concerns that the administration is intent on taking a more active role in the release of new A.I. systems. Under the deal, Anthropic agreed to place safeguards on its A.I. models in exchange for restoring access to hundreds of clients. The Commerce Department had abruptly told the company on June 12 that it had 90 minutes to disable Mythos and Fable. Anthropic later discovered that the administration's concerns stemmed from a paper published by Amazon researchers that pointed to a perceived security shortcoming. The researchers were able to persuade the A.I. model to disclose flaws in bits of vulnerable software code. Amazon did not include tests of models from other A.I. firms, some of which are capable of generating the same information, cybersecurity experts who had seen or been briefed on the report said. Despite easing its restrictions on Anthropic, the administration's interest in managing the release of A.I. models appears to be expanding. Earlier on Friday, OpenAI, Anthropic's main rival, unveiled an A.I. technology called GPT-5.6 Sol, saying it matched the performance of Mythos on standard benchmark tests used by A.I. companies. OpenAI said it would initially share the technology with only a small number of companies approved by the administration. "We don't believe this kind of government access process should become the long-term default," the company said in a blog post. "It keeps the best tools from users, developers, enterprises, cyber defenders, and global partners who need them. We are taking this short-term step because we believe it is the strongest path to broader availability." (The New York Times has sued OpenAI and Microsoft, claiming copyright infringement of news content related to A.I. systems. The two companies have denied those claims.) The administration also pressed Meta this week to submit its A.I. models for voluntary review. Meta is the only major U.S. developer of A.I. technology that has not reached an agreement to voluntarily share its models with the federal government for review. OpenAI, Anthropic, Google, xAI and Microsoft all agreed to submit their models to the government's A.I. safety group, known as the Center for A.I. Standards and Innovation. Overseen by Mr. Lutnick, the center was created by the Biden administration to vet A.I. models and has a technical staff to lead those evaluations. Cade Metz, Tripp Mickle and Tyler Pager contributed reporting.

How the world's top AI models were revived

Why it matters: Anthropic's models are back online, but the impact of its 20-day showdown with the Trump administration will be long lasting. Behind the scenes: It began when Amazon, Anthropic's partner and investor, sounded an alarm that was later disputed by cybersecurity experts. * It warned about a "jailbreaking" issue it found with the AI lab's latest models, Mythos and Fable -- meaning a technical flaw that could have caused a failure of their guardrails. * Amazon flagged its concerns to the administration, triggering sweeping export controls. A U.S. official said the government conducted its own tests once it became apparent that the issue needed to be addressed. * Cybersecurity experts, however, later wrote in an open letter to the administration that other leading AI models have the same issue Amazon warned about with Anthropic. On June 12, Commerce Secretary Howard Lutnick, at the direction of President Trump, called Anthropic CEO Dario Amodei. * Lutnick made clear to Amodei the issue needed to be resolved fast and alerted the CEO that the company would be receiving a letter imposing sweeping export controls, the U.S. official said. * Amodei called Lutnick back that night after receiving the letter, realizing it effectively meant the models would have to be taken offline -- to which Lutnick responded that was indeed the goal. That decision led to a three-week, multi-agency crash course in AI safety. * Anthropic deployed engineers to Washington D.C. According to a U.S. official, the company wanted to prove everything was already resolved and further changes were being fine tuned. * But the federal Center for AI Standards and Innovation and the National Security Agency said those changes weren't good enough, prompting further fixes, according to the U.S. official. * Gradually, various agency heads approved of the changes, and on July 1 the models were released, the official said. Out of all of the administration officials Amazon's Andy Jassy could have called, it was Treasury Secretary Scott Bessent who first heard about the jailbreaking issue found in the company report, according to a separate source familiar. * Bessent was early to sound the alarm on Mythos, work with White House Chief of Staff Susie Wiles to re-engage the embattled company, and help get a cybersecurity executive order across the finish line. * While technical discussions to address the jailbreaking issue took place in D.C., it was Bessent who stood next to President Trump during the G7 where allies called for global cooperation on safety standards. At the center of the showdown was Commerce Secretary Howard Lutnick, who also flanked Trump at the G7 meeting while his department's teams led technical discussions. * National cyber director Sean Cairncross, the White House Office of Science and Technology Policy, Treasury Department chief information officer Sam Corcos, and the NSA also all participated in technical discussions, according to various sources. * Washington mobilized faster to hold scores of meetings and pulled in far more agencies than one would expect for a single technical issue, one source said. The tension spiraled amid personality clashes and poor communication. * Anthropic eventually understood that in order to be successful they needed to be on the same side as the government, the U.S. official said. * As discussions turned more technical, Anthropic policy chief Sarah Heck and Anthropic co-founder Tom Brown got more involved. Brown also had multiple conversations with Lutnick and Cairncross the weekend of June 12. * There was never a moment where Dario stepped offstage and someone else replaced him, one source said, adding that Brown's technical expertise allowed him to sit in a room with government specialists and go line‑by‑line through how models behave under stress. Between the lines: It remains uncertain when and how Anthropic's models will be released to ally countries around the world -- which proponents say is key to beating China -- or how other labs from OpenAI to Google will release their latest models. * OpenAI, whose latest model GPT-5.6 is on hold, did not have visibility into discussions between Anthropic and the White House and is engaged in daily technical discussions on the release of its own model, a source said. The bottom line: There's a lot of work left to be done on a framework for approving future models with a clear inclusive process that has transparency standards and timelines, sources familiar said.

Anthropic: US has lifted export controls on Fable and Mythos AI models after security risk fears

The AI company was forced earlier this month to suspend access to its Fable 5 and Mythos 5 models for all foreign nationals Anthropic has said the US commerce department has lifted export controls on its Fable and Mythos AI models, less than ⁠three weeks after ⁠the company was ordered to suspend access to its most advanced AI models over national security risks. "We'll begin restoring access tomorrow," Anthropic said in a statement on X late on Tuesday. US authorities blocked access to the models on national security grounds several weeks ago, but in a letter to Anthropic seen by Reuters, US commerce secretary Howard Lutnick, said the export controls were withdrawn and that a licence was no longer required for their export. "Anthropic has agreed to proactively detect and address security risks associated with the models; to work diligently with the US government on protocols and standards and releases for Mythos, Fable, and future models; and to inform the US government of any malicious activity," Lutnick said. The US has stepped up oversight ⁠of new AI releases to identify potential threats amid concerns that the advanced models that are driving the sector's boom and major ⁠capital investments could be misused by military intelligence users in China, Russia or other countries of concern. Anthropic abruptly disabled its Mythos 5 and Fable 5 models following the export-control order on 12 June. On Friday, the US government allowed it to release Mythos 5 to some "trusted" US organisations, partially reversing the order. The US government's vetting of ⁠which companies can gain access to the models has drawn criticism. OpenAI CEO Sam Altman said last week that extensive safety testing "is not a bad idea. I just don't like the idea of the government picking the customers." ChatGPT-maker OpenAI delayed a full public launch of GPT-5.6 at the US government's request, limiting its access to a small group of vetted partners. With Reuters and Agence France-Presse

Claude Mythos 5 is back, but only for a select group of US institutions

Credit: Pavlo Gonchar/SOPA Images/LightRocket via Getty Images Two weeks after the Trump administration forced Anthropic to pull its most powerful AI models, the government has partially lifted the block with some strings attached. The US government has allowed Anthropic to restore access to Claude Mythos 5 for more than 100 American companies and government agencies, according to Semafor, marking a significant de-escalation in a tense standoff between the Trump administration and one of the AI industry's most prominent labs. Commerce Secretary Howard Lutnick informed Anthropic in a letter Friday that adequate safeguards were in place to permit access for a defined list of trusted partners, Semafor reported. Lutnick also noted that Anthropic has committed to working with the government on future model protocols and releases. The partial restoration comes roughly two weeks after the administration issued export controls ordering Anthropic to suspend all access to both Mythos 5 and Claude Fable 5 -- its publicly available counterpart -- for any foreign nationals, including Anthropic's own employees. In our reporting on the pull-down, the government cited national security concerns without providing specifics. While Anthropic said it believed officials had been shown a method to jailbreak Fable 5, the company characterized the vulnerabilities as relatively minor and noted other models could surface the same issues. Fable 5 remains offline for now. Semafor reports that people close to the talks say a path toward restoring it is taking shape, but no timeline has been confirmed.

US allows Anthropic to release Mythos to some US companies

June 26 (Reuters) - The U.S. government on Friday allowed Anthropic to release its powerful Claude Mythos 5 AI model to some "trusted partners", according to a Commerce Department letter seen by Reuters. More than 100 companies and institutions have ⁠access to Mythos 5, including many Fortune 500 companies, a source told Reuters. "Since the issuance of my June 12 letter, Anthropic has worked with the U.S. government to address risks associated with ⁠the Covered Models," U.S. Commerce Secretary Howard Lutnick said in the letter to Anthropic. "In just two ⁠weeks, we have worked diligently to ensure America remains the global leader ⁠and AI while safeguarding our security," a Commerce Department ⁠spokesperson said. Reporting by Mrinmay Dey in Mexico City, David Shepardson in Washington; Editing by Anil D'Silva Our Standards: The Thomson Reuters Trust Principles., opens new tab

You'll be able to use Claude Fable 5 again starting July 1

Anthropic has received a green light from the US government to restore the AI Model, weeks after a security researcher found a way around its safeguards that triggered the shutdown. Anthropic is restoring full access to Claude Fable 5 starting tomorrow, weeks after a US government directive forced the company to suspend the model for all users. The government order arrived on June 12 and required Anthropic to block foreign nationals from using Fable 5 and its more capable Mythos 5 model. Since the rule took effect immediately and Anthropic had no way to verify a user's nationality in real time, the company suspended both models entirely rather than risk a violation. What triggered the shutdown The restrictions followed a report from Amazon researchers, who found a way to prompt Fable 5 into identifying software vulnerabilities its safeguards were designed to block. In one instance, the model generated code showing how a flaw could be exploited. Anthropic says it later confirmed that several less capable models, including Opus 4.8 and competing models, could produce similar results, which suggests the bypass didn't hinge on capabilities unique to Fable 5. Return terms and new safeguards Fable 5 will be available globally starting July 1 to users on the Claude Platform, Claude.ai, Claude Code, and Claude Cowork. Pro, Max, Team, and select Enterprise plans will get the model included for up to half their weekly usage limits through July 7, after which usage will draw from credits. Access on AWS, Google Cloud, and Microsoft Foundry will follow. Mythos 5 already returned earlier for a limited set of approved US organizations, and Anthropic says it has received further government clearance to expand that access on June 26. The company has revealed that it built a new safety classifier that blocks the flagged technique in more than 99 percent of cases and is working with Amazon, Microsoft, and Google on a shared industry standard for grading the severity of AI jailbreaks going forward.

Anthropic's Mythos 5 AI model cleared by U.S. for wider use | Fortune

Anthropic PBC won US approval to restore some access to its powerful Mythos 5 artificial intelligence model, after resolving Trump administration concerns about the technology's potential threats to national security. "Anthropic has worked with the US government to address risks associated with the Covered Models," Commerce Secretary Howard Lutnick wrote to the company's chief compute officer in a letter seen by Bloomberg News. "These efforts have yielded significant progress," he wrote, saying that the model could be released to "certain trusted partners." The clearance eases a confrontation that erupted two weeks ago when the government abruptly barred Anthropic from giving foreign nationals access to Mythos 5 and a related model, Fable 5, over fears that security guardrails could be circumvented. The order prompted the company to disable all global access to the two advanced systems and touched off intensive talks toward a resolution. "In just two weeks, we have worked diligently to ensure America remains the global leader in AI while safeguarding our security," said Commerce Department spokesman Benno Kass. The Commerce letter dated Friday doesn't mention any change to its restrictions on use of the Fable 5 model. "We received notice from the US government that Mythos 5, our strongest cybersecurity model, can be redeployed to a small group of cyber defenders and infrastructure providers," Anthropic said in a statement. "We are working to provision the approved set of providers and restore their access to Mythos 5 as quickly as possible. We are pleased to see this progress and continue to work with the government to expand access to Mythos 5 and make Fable 5 available for general use again." It's unclear what steps Anthropic had to take to satisfy the government's concerns that it was possible to "jailbreak," or bypass guardrails on, the advanced models. The company expects conversations to continue over the weekend with the government as it aims to bring back access to Fable 5 soon, said a person familiar with the matter, who asked not to be named because the discussions are private. The company is also working with the government to come up with a policy framework to deal with such situations in the future, the person said. Anthropic had objected to the government's decision to impose export controls in a blog post announcing that the two systems had been disabled. "If this standard was applied across the industry, we believe it would essentially halt all new model deployments for all frontier model providers." In that post, Anthropic cautioned that it believes that "perfect jailbreak resistance is not currently possible for any model provider." The government's decision to restrict the availability of Anthropic's models also reverberated across the AI industry, particularly at rival startup OpenAI, which limited the release of a capable new AI model -- GPT-5.6 -- under pressure from the Trump administration. OpenAI said Friday it would roll out a preview version to select partners who were approved by the US government, before making it more available in the coming weeks, following a request from the administration. Wider feud The showdown over Mythos 5 and Fable 5 marked the latest clash between Anthropic and the Trump administration. Anthropic has been embroiled for months in a feud with the Pentagon over extra guardrails the San Francisco-based company sought for military use of its AI tools. After contract talks broke down, the Defense Department declared the firm a supply-chain risk in March and is moving to seek other AI providers for the armed forces. Privately held Anthropic, which has long positioned itself as a more responsible AI developer than its rivals, first shared its Mythos model in April with a limited group of companies and institutions, warning that its ability to find cybersecurity vulnerabilities made it too risky to distribute more widely. Earlier this month, the company released Fable 5 as the first public-facing version of its Mythos-class model, but with guardrails aimed at containing the full range of its cyber capabilities. Fable 5 is prevented from responding to certain types of queries, including those related to cybersecurity and biology. In those cases, Anthropic has said its Claude chatbot will route responses through a different model, called Opus 4.8. By continuing to restrict the Fable 5 model, the federal government indicated that it remains wary of making the technology behind these models broadly available, even with limits that Anthropic added before generally releasing it. Mythos 5, which is a version of Fable 5 without some of the safeguards, was scheduled to be released to a more limited group of institutions for cybersecurity purposes, an invite-only initiative called Project Glasswing. As of earlier this month, about 200 firms had access to Mythos through the program, including Apple Inc., Alphabet Inc.'s Google, Cisco Systems Inc., Nvidia Corp. and Microsoft Corp. Industry impact The order to bar Anthropic's latest models represented the most significant intervention by the US government to date into an AI venture's operations, and highlighted emerging concerns surrounding the security of cutting-edge models. It posed a new challenge to Anthropic weeks after the company filed confidentially for an initial public offering, with its latest valuation topping $900 billion. The recent negotiations involved senior executives from Anthropic including co-founder Tom Brown, who met with Lutnick and other senior administration officials in recent days, people familiar with the talks told Bloomberg. US officials told Anthropic that the restrictions would be lifted once the government's security concerns have been addressed, said the people, who spoke on condition of anonymity because the discussions weren't public. In the talks with Commerce over Fable 5 and Mythos 5, Anthropic Chief Executive Officer Dario Amodei took a hands-off role, helping to reduce friction between the two sides, according to the people.

Anthropic says Trump administration lifted restrictions on some of its most powerful Claude AI models

Joe Walsh is a senior editor for digital politics at CBS News. Joe previously covered breaking news for Forbes and local news in Boston. Artificial intelligence giant Anthropic said Tuesday the federal government has lifted a set of restrictions on its powerful Claude Fable 5 and Mythos 5 models, resolving a weekslong dispute between the Trump administration and the AI company. Anthropic said in a social media post that it will begin restoring access Wednesday. Commerce Secretary Howard Lutnick wrote on X that in recent weeks, his team has "worked closely with Anthropic to analyze and approve Fable 5 to ensure alignment across the US Government and strengthen America's leadership in AI." CBS News has reached out to Anthropic and the Commerce Department for additional details. Anthropic released Claude Fable 5 to the public earlier this month, with safeguards the company said would reduce the risk of it being misused for cyberattacks or other nefarious purposes. It said Mythos 5 -- a version with fewer guardrails -- would initially be made available to a select group of major companies for testing purposes. Just days after Fable 5 was released, Anthropic took it down. The company said the federal government had issued export controls that required it to block access to the model by foreign nationals -- a broad order that Anthropic said effectively required it to disable the model. In a statement at the time, Anthropic said the government's concerns appeared to focus on a potential "jailbreak," or a technique for tricking the AI model and bypassing its guardrails. The company argued its safeguards were effective, and called the vulnerabilities discovered using the apparent jailbreak "relatively simple" and replicable with other AI models. "[We] disagree that the finding of a narrow potential jailbreak should be cause for recalling a commercial model deployed to hundreds of millions of people," Anthropic said at the time. "If this standard was applied across the industry, we believe it would essentially halt all new model deployments for all frontier model providers." Last week, CNBC and The Wall Street Journal reported that the Commerce Department had begun allowing certain companies and government entities to begin using Mythos 5 again, a partial easing of the strict export controls. The more than two-week-long interruption for Fable 5 and Mythos 5 came as the Trump administration navigates the potential risks posed by artificial intelligence. Fears have mounted that increasingly powerful AI models could be a boon for cybercriminals hunting for software vulnerabilities, but many administration allies are wary of government regulation of the industry. Earlier this month, President Trump signed an executive order meant to create a voluntary 30-day review process for the most advanced private AI models, in collaboration with the federal government. Mr. Trump had delayed signing the order, telling reporters he didn't want to "get in the way" of U.S. leadership of the AI industry or risk giving China an edge. On Tuesday, shortly before Anthropic announced the restrictions were lifted, White House chief of staff Susie Wiles thanked companies that had cooperated with the executive order, including on "advanced model access and guardrail testing and security." Earlier this year, Anthropic clashed with the Pentagon over the company's push for formal guardrails to prevent the military from using its Claude models -- which were deployed in the military's classified systems -- to power fully autonomous weapons or mass surveillance of Americans. After the two sides failed to reach an agreement, Mr. Trump ordered all federal agencies to stop using Anthropic's AI technology, and Defense Secretary Pete Hegseth labeled it a "supply chain risk," seeking to stop federal contractors from using Claude for military work. The administration cast Anthropic -- long a backer of government oversight of AI -- as ideologically motivated. Anthropic sued, and a federal judge blocked those restrictions, calling them "Orwellian" and an effort to "cripple" the company. The federal government is appealing.

Commerce Department gives green light for Anthropic to bring back Fable 5

Howard Lutnick, U.S. commerce secretary in the Oval Office in April.Will Oliver / Bloomberg via Getty Images The public will once again be able to access Anthropic's powerful Fable 5 model, the AI giant said Tuesday, weeks after the Commerce Department required the company to disable the model over potential security risks. Access will be restored to customers beginning Wednesday, Anthropic said. Fable 5, part of Anthropic's Claude family of AI systems, was forced offline June 12 after senior administration officials said that the model posed severe cybersecurity risks and that Anthropic's leadership did not sufficiently recognize their concerns. Writing on X Tuesday evening, Anthropic thanked its users for their patience and said it would soon share a further update. Commerce Secretary Howard Lutnick confirmed that the ban on Fable 5 would be lifted in a separate post on X. "Over the past two weeks, we have worked closely with Anthropic to analyze and approve Fable 5 to ensure alignment across the US Government and strengthen America's leadership in AI," he wrote. On June 9, Anthropic debuted Fable 5 and Mythos 5, the most powerful systems it has ever publicly released. Both were built on the same technological foundation, but only Fable 5 was made available to the general public. Fable 5 included guardrails that prevented users from asking the AI system to assist with a wide range of cybersecurity- and biology-related questions. The company said those measures were in place because of bad actors who use powerful AI systems for malicious cyber- and biology purposes. However, senior administration officials became worried that users might be able to circumvent Fable 5's guardrails -- though experts disagreed over the severity of the risk. Citing a potential risk to national security, Lutnick told Anthropic he would enact export controls preventing any foreign national from accessing the model. To comply with the order, Anthropic was forced to take both models offline June 12. Anthropic then dispatched a team of its top scientists to Washington D.C. to hammer out a solution with government officials. On Friday, Lutnick announced that Mythos 5 would be allowed back online to around 100 trusted organizations that work on cybersecurity and infrastructure efforts. Lutnick cited Anthropic's cooperation with the government as a key reason for the detente. In the weeks since Fable 5 and Mythos 5 were forced out of commission, industry leaders and experts became increasingly worried that the ad-hoc ban would threaten America's AI lead against China. Sam Altman, the CEO of Anthropic competitor OpenAI, labelled the government's desire for AI companies to launch their models in phases, with direct government approval for which organizations can access the most powerful systems, as "bad news." President Donald Trump signed an executive order targeting the cybersecurity impacts of advanced AI models at the beginning of June. The order aimed to create a voluntary mechanism for AI companies to give the government early access to advanced systems for vetting.

US govt lifts restrictions on powerful AI models, Anthropic says

San Francisco (United States) (AFP) - Anthropic will soon begin restoring access globally to its most powerful AI models, Fable 5 and Mythos 5, after the US government lifted a restriction on where they could be released, the company said Tuesday. Over the past couple of weeks, the Trump administration has invoked national security concerns to limit the ability of major US tech companies to release advanced models, including those from Anthropic which some researchers feared could be exploited to bypass cybersecurity measures. "We've received notice that the Department of Commerce has lifted export controls on Claude Fable 5 and Mythos 5," Anthropic posted on X. "We'll begin restoring access tomorrow." Just four days ago, the company said it had received authorization from the government to allow a small group of American cybersecurity firms to access Mythos 5. Secretary of Commerce Howard Lutnick said in a June 26 letter to the company that "Anthropic has worked with the US government to address risks associated with the Covered Models," Politico reported. The government abruptly forced Anthropic to cut off access to its two cutting-edge artificial intelligence models on June 12 after discovering vulnerabilities in the safeguards put in place to prevent misuse of the tool. On Tuesday, Lutnick told Anthropic in a letter that the Trump administration had "withdrawn" its previous restrictions on the release of the company's models, Politico reported. The letter indicated that the Trump administration was satisfied, at least for now, that Anthropic had "taken steps in close coordination with the U.S. government to address the risks associated with Claude Mythos 5 and Claude Fable 5." Like Anthropic, rival AI lab OpenAI has also complied with Washington's requests to restrict its own release of a new, powerful model called GPT-5.6 to a limited set of approved partners. "This isn't quite the process that we think is optimal," OpenAI CEO Sam Altman said Friday in a post on X, alongside an explanation of the GPT-5.6 launch. Anthropic did not immediately respond to a request for comment Tuesday. New frontiers The Trump administration issued an executive order on June 2 calling for the federal government to take multiple steps over the subsequent two months to take actions on AI and cybersecurity -- including creating a voluntary "framework" for private companies, such as Anthropic and OpenAI, to test and release their powerful "frontier" AI models in collaboration with the government. Susie Wiles, the president's chief of staff, posted Tuesday on X that the Trump administration was grateful for the cooperation from tech companies, though she didn't name any. "My gratitude to companies across industries who continue to work closely with the White House to implement the President's" executive order on AI and cybersecurity, Wiles said. "This includes excellent work around advanced model access and guardrail testing and security." Earlier in the day, CIA Director John Ratcliffe compared the capabilities of the most advanced artificial intelligence models to nuclear weapons, in a tacit defense of the Trump administration's recent hard line on controlling the release of the most powerful AI technology. "In conversations with many of the president's other national security and economic security advisors, we're talking about the impact of these frontier AI models," Ratcliffe said during a speech at the AWS summit in Washington. "It would be...not misplaced to refer to their capabilities as akin to digital nuclear weapons," Ratcliffe said.

US lifts export controls on powerful AI models

Anthropic will restore global access to its Fable 5 and Mythos 5 models after the US Department of Commerce lifted security restrictions that blocked the powerful systems earlier this month. The US government has lifted restrictions on powerful AI models, such as Fable 5 and Mythos 5, according to Anthropic, the AI firm behind the popular chat model 'Claude'. The company will soon begin restoring global access to its most powerful AI models, it said on Tuesday. Posting on X, Anthropic said: "We've received notice that the Department of Commerce has lifted export controls on Claude Fable 5 and Mythos 5," adding, "We'll begin restoring access tomorrow." Earlier this month, US authorities blocked access to the models on national security grounds. Just four days ago, the company said it had received government authorisation for a small group of American cybersecurity firms to access Mythos 5. The US government abruptly forced artificial intelligence lab Anthropic to cut off access to its two cutting-edge models on 12 June, following the discovery of vulnerabilities in safeguards designed to prevent misuse of the tool. The restriction has now been lifted after a letter seen by US media indicated that the Trump administration was satisfied, at least for now, that Anthropic had "taken steps in close coordination with the U.S. government to address the risks associated with Claude Mythos 5 and Claude Fable 5." The process is not optimal, Altman says The intervention underscores Washington's growing scrutiny of advanced AI technologies. Like Anthropic, rival AI lab OpenAI has also complied with requests from the US government to restrict the release of its own powerful new model, GPT-5.6, to a limited set of approved partners. OpenAI CEO Sam Altman expressed some reservations about the current regulatory approach, stating on Friday in a post on X alongside an explanation of the GPT-5.6 launch: "This isn't quite the process that we think is optimal."

Anthropic's Fable 5 is back after the Trump administration lifted export controls

Why it matters: It's the most powerful publicly available AI tool -- so capable that the U.S. government decided Anthropic had to add further safety measures in order to make it broadly available. Driving the news: Fable is available to all customers, Anthropic said, though queries it deems to pose security or safety risks may be routed to less powerful models. * For the most part, customers who want to use Fable will have to do so outside of any subscription plan, paying for the tokens they use. * Anthropic says that, until July 7, subscribers can tap Fable for up to half of their included data usage, though it warns Fable will burn through tokens faster than other models. The big picture: While Fable is once again available, its blockage by the U.S. government has raised significant questions over how and when the Trump Administration will step in to block future frontier model releases.

US lifts export ban on Anthropic's Mythos, Fable models

The company managed to restore Mythos access for select US organisations late last week. The US government reversed its export ban on Anthropic's Mythos 5 and Fable 5 AI models, ending a more than two week blockade that sent shockwaves across the world. "We've received notice that the Department of Commerce has lifted export controls on Claude Fable 5 and Mythos 5," Anthropic said early today (1 July). Restrictions were lifted late yesterday (30 June). The company managed to get the export ban on Mythos partially lifted late last week after placing "appropriate safeguards", according to US Secretary of Commerce Howard Lutnick. Lutnick, today, said that the government worked closely with Anthropic to "analyse and approve Fable 5 to ensure alignment across the US government and strengthen America's leadership in AI". Fable 5 will be available starting today to users globally on the Claude platform, while Mythos access has been restored for a set of US organisations, Anthropic said. "We continue to coordinate with the government to expand access to the broader set of domestic and international partners in the Glasswing program," the company added. The AI start-up found its widely-sought-after cybersecurity model Mythos - and its more restrictive iteration, Fable - suspended from foreign access on 12 June. The US cited national security concerns over its abrupt decision to impose an export ban, but did not provide any details, the company said at the time. "Our understanding is that the government believes it has become aware of a method of bypassing, or 'jailbreaking' Fable 5," read Anthropic's statement earlier this month. The export restriction came at a time countries and organisations worldwide - including in the EU - were attempting to access Mythos to secure their own systems. The European Commission noted, at the time, that developments like these are "a further ⁠illustration of why Europe needs to strengthen its technological sovereignty". While in a similar statement, Canadian prime minister Mark Carney highlighted the risk of overreliance on a small number of powerful AI tools. Anthropic had been quick to engage in discussions with the White House as it continues to prepare for a blockbuster public listing expected to value it at more than $1trn. Meanwhile, the company is also engaged in a legal battle with the Trump administration following a separate incident earlier this year after it refused to change its AI safeguards for usage by the US government. Also yesterday (30 June), Anthropic launched its latest Claude Sonnet model - marketed as its "most agentic" yet. The company said that the model reached performance closer to Opus 4.8, but at lower prices. "It's a substantial improvement over its predecessor, Sonnet 4.6, on important aspects of agentic performance like reasoning, tool use, coding, and knowledge work," Anthropic said. The company's safety assessments found that the new model shows an "overall lower rate of undesirable behaviours" than Sonnet 4.6, and is "generally safer to use in agentic contexts". "Evaluations also show that it has a much lower ability to perform cybersecurity tasks than our current Opus models," Anthropic added. Don't miss out on the knowledge you need to succeed. Sign up for the Daily Brief, Silicon Republic's digest of need-to-know sci-tech news.

Anthropic's most powerful AI is making a comeback, but only for a select few

The U.S. government has approved the limited return of Mythos 5 as Fable 5 edges closer to a wider release. Anthropic's AI restrictions may finally be starting to thaw. After being forced offline earlier this month over U.S. government security concerns, the company's most advanced AI models are slowly making a comeback. According to a new report from Axios, Anthropic has already restored Mythos 5 for a limited number of trusted users, while Fable 5 could return as early as next week if ongoing discussions with federal agencies continue to progress. Mythos returns first, while Fable waits in the wings According to Axios, the U.S. Commerce Department has cleared Anthropic to restore access to Mythos 5, its strongest cybersecurity-focused AI model, for a select group of trusted customers. Unlike Fable 5, Mythos was never broadly available to the public and includes additional guardrails designed to reduce the risk of misuse in areas such as cyberattacks and biological threats. The bigger prize, however, is Fable 5. Axios reports that the Trump administration is close to lifting restrictions on the model after nearly two weeks of negotiations with Anthropic. The model was pulled just days after launch despite quickly gaining a reputation as one of the industry's most capable AI systems, particularly for coding and deep reasoning. Developers who had already integrated Fable 5 into their workflows were left scrambling when access disappeared overnight. Commerce Secretary Howard Lutnick reportedly told Anthropic that the company had made significant progress in addressing government concerns surrounding both Mythos 5 and Fable 5, while Anthropic has agreed to continue working with U.S. agencies on future release protocols. Even so, Axios notes that final approval for Fable 5 still depends on additional agencies, including the Pentagon and the National Security Agency. This is quickly becoming the new normal for frontier AI Interestingly, the return of Mythos 5 says just as much about AI regulation as it does about Anthropic. The company originally positioned Fable 5 as its flagship public model, while Mythos 5 is effectively a more tightly controlled variant with additional safeguards for high-risk use cases. Letting Mythos return first suggests regulators are increasingly comfortable approving AI systems that ship with stricter guardrails before allowing their more open counterparts back into the wild. The bigger picture is that this is no longer just Anthropic's problem. OpenAI followed a remarkably similar strategy with its recent GPT-5.6 preview, limiting access to trusted partners while working through the same government review process. If there's one trend emerging from all this, it's that launching the world's most capable AI models is no longer just an engineering milestone. It's becoming a regulatory one too

US allows Anthropic to redeploy Mythos and Fable models

The US government has lifted its export ban on Anthropic's Mythos 5 and Fable 5 AI models. This decision allows the company to restore access to its AI models for customers after previously being mandated to suspend foreign nationals' access to these systems. In compliance with the government's directive, Anthropic had blocked access to Mythos and Fable. The company announced on X that it intends to start restoring access to its AI models on July 1, following permission from the Department of Commerce. Recently, Anthropic received government authorization to redeploy Mythos 5 to specific US organizations involved in critical infrastructure. Reports indicate that this rollout will provide approximately 100 organizations with access to Mythos 5, particularly for the Project Glasswing cybersecurity initiative. The status of Fable remained uncertain until the ban was lifted. According to the Financial Times, Commerce Department Secretary Howard Lutnick communicated that the ban on Fable was lifted after Anthropic agreed to proactively address security risks related to the models. Restrictions on both Mythos and Fable were imposed following concerns voiced by Amazon and other companies regarding potential vulnerabilities and misuse of the models. Anthropic defended its AI offerings by outlining the safeguards implemented to prevent misuse during the period when access was blocked.

Anthropic Restores Claude Fable 5 and Mythos 5 Access

Claude Fable 5 will be redeployed with a new set of classifiers designed to identify and block a broader range of cybersecurity-related tasks. Artificial intelligence company Anthropic is set to restore public access to its most powerful AI models, Claude Fable 5 and Mythos 5, weeks after they were pulled offline under a directive from the US government. Anthropic's two latest models have been restricted from public access since June 12, when the government applied export controls following a report in which researchers bypassed Fable 5's safeguards, forcing Anthropic to pull all access to the models immediately. The government lifted those restrictions on Wednesday, stated Anthropic. "After a series of productive conversations with the US government, we're redeploying the model with a new set of classifiers to target and block more cybersecurity tasks," Anthropic said. The suspension of the models raised concerns about state control over frontier AI technology and set a dangerous precedent, according to experts and technologists. The export controls also highlighted White House concerns about a potential national cybersecurity threat if these powerful models were jailbroken and used for malicious purposes. Getting best tech deployed remains priority US Secretary of Commerce Howard Lutnick said on X on Wednesday, "Over the past two weeks, we have worked closely with Anthropic to analyze and approve Fable 5 to ensure alignment across the US Government and to strengthen America's leadership in AI." Meanwhile, White House Chief of Staff Susie Wiles said on X that government priority remains to "get the best [AI] tech deployed as quickly and safely as possible." The restrictions came after the government became aware of a report in which Amazon researchers found a method of bypassing Fable 5's safeguards, prompting the model to identify several software vulnerabilities. In a blog post, Anthropic argued this wasn't a risk unique to Fable 5, as weaker models could also identify the same vulnerabilities and produce the same exploit. AI jailbreak classifications proposed Anthropic has also begun drafting a consensus framework with Amazon, Microsoft, Google and other partners in its Project Glasswing -- a collaboration announced in April to safeguard against AI cybersecurity threats -- for "assessing the severity of AI jailbreaks." Anthropic's cybersecurity safety classifiers and how jailbreaks interact with safety classifiers. Source: Anthropic The company is also scaling up collaboration with the US government on AI model testing and safeguards. "This will include pre-release access to models and safeguards for evaluation, information sharing on jailbreaks and misuse, and dedicated resources for joint research," it stated. A well-known AI researcher claimed to have jailbroken Fable 5 within 48 hours of its launch in June, before the government restrictions, and shared screenshots showing how he bypassed the model's safety guardrails.

US lifts export restrictions on Anthropic's Fable 5 AI model

Washington | The US government removed foreign access restrictions on Anthropic PBC's Fable 5 artificial intelligence model, clearing it for wider distribution after the startup resolved the Trump administration's safety concerns. The Commerce Department had imposed an export control rule via a private letter on June 12 requiring the company obtain US permission before allowing any foreign national, regardless of location, to access its powerful Mythos 5 AI model and Fable 5, a similar model intended for broader release.

Anthropic to restore global access to most powerful AI models

Anthropic said on Tuesday it would restore global access to its most advanced AI models after the US government lifted export restrictions imposed earlier this month over national security concerns. The decision marks a reversal after the company worked with Washington to strengthen safeguards around the technology. Anthropic will soon begin restoring access globally to its most powerful AI models, Fable 5 and Mythos 5, after the US government lifted a restriction on where they could be released, the company said on Tuesday. "We've received notice that the Department of Commerce has lifted export controls on Claude Fable 5 and Mythos 5," Anthropic posted on X. "We'll begin restoring access tomorrow." Earlier this month, US authorities blocked access to the models on national security grounds. Just four days ago, the company said it had received authorisation from the government to allow a small group of American cybersecurity firms to access Mythos 5. Secretary of Commerce Howard Lutnick said in a June 26 letter to the company that "Anthropic has worked with the US government to address risks associated with the Covered Models," Politico reported. The government abruptly forced Anthropic to cut off access to its two cutting-edge artificial intelligence models on June 12 after discovering vulnerabilities in the safeguards put in place to prevent misuse of the tool. On Tuesday, Lutnick told Anthropic in a letter that the Trump administration had "withdrawn" its previous restrictions on the release of the company's models, Politico reported. The letter indicated that the Trump administration was satisfied, at least for now, that Anthropic had "taken steps in close coordination with the US government to address the risks associated with Claude Mythos 5 and Claude Fable 5." Like Anthropic, rival AI lab OpenAI has also complied with Washington's requests to restrict its own release of a new, powerful model called GPT-5.6 to a limited set of approved partners. "This isn't quite the process that we think is optimal," OpenAI CEO Sam Altman said on Friday in a post on X, alongside an explanation of the GPT-5.6 launch. Anthropic did not immediately respond to a request for comment on Tuesday. Read more'Human role narrowing': Anthropic calls for global AI slowdown as systems could escape control The Trump administration issued an executive order on June 2 calling for the federal government to take multiple steps over the subsequent two months to take action on AI and cybersecurity - including creating a voluntary "framework" for private companies, such as Anthropic and OpenAI, to test and release their powerful "frontier" AI models in collaboration with the government. Susie Wiles, the president's chief of staff, posted on Tuesday on X that the Trump administration was grateful for the cooperation from tech companies, though she did not name any. "My gratitude to companies across industries who continue to work closely with the White House to implement the President's" executive order on AI and cybersecurity, Wiles said. "This includes excellent work around advanced model access and guardrail testing and security." Earlier in the day, CIA Director John Ratcliffe compared the capabilities of the most advanced artificial intelligence models to nuclear weapons, in a tacit defence of the Trump administration's recent hard line on controlling the release of the most powerful AI technology. "In conversations with many of the president's other national security and economic security advisers, we're talking about the impact of these frontier AI models," Ratcliffe said during a speech at the AWS summit in Washington. "It would be ... not misplaced to refer to their capabilities as akin to digital nuclear weapons," Ratcliffe said.

Anthropic cleared to restore Mythos 5 to certain US organisations

"We're restoring access for these organizations quickly, and we're continuing to work with the government to expand access to Mythos 5 and make Fable 5 available for general use again," the company said on Friday. Anthropic said on Friday that the US government had told the company it could restore access to one of its most powerful AI tools for select US organisations. Earlier this month, the Trump administration issued a directive banning foreign nationals - including Anthropic employees - from using the AI firm's Fable 5 and Mythos 5 AI models, citing national security concerns. In response, Anthropic said it would have to shut off access to all customers in order to comply with the order. But on Friday, Anthropic announced that after "working closely" with the government since 12 June, it had received the green light to rerelease Mythos 5 to certain organisations. "Today, the government notified us that Mythos 5, our strongest cybersecurity model, can be redeployed to a set of US organizations that operate and defend critical infrastructure," it said in a statement. "We're restoring access for these organizations quickly, and we're continuing to work with the government to expand access to Mythos 5 and make Fable 5 available for general use again," it added. The US's decision to block Mythos and Fable earlier this month had sparked serious concerns among EU officials. Responding to the news at the time, Benjamin Haddad, the French minister delegate for Europe, called for Europe to "invest more, support its innovators, and equip itself with the means to master the technologies that will determine power in the 21st century". "Europe cannot settle for being an open market dependent on technologies designed, funded, and controlled elsewhere," he said.

Trump administration to lift restrictions on Anthropic's Fable 5

Why it matters: The decision, eagerly awaited by AI developers, restores public access to the company's powerful Mythos-class model that had been pulled for security reasons 18 days ago. Driving the news: Last week, the Trump administration allowed Anthropic to restore access to Mythos 5 for a select group of government-approved organizations. * Sources also told Axios last week Fable 5 could return as soon as this week. The big picture: The U.S. government's desired role in regulating and evaluating frontier AI models before release is still up in the air -- creating an ad hoc regulatory environment for AI companies. * It remains unclear what technical or policy changes Anthropic made to address Commerce Department concerns, particularly preventing access by foreign nationals. * Commerce Secretary Howard Lutnick said in a post on X that his office has "worked closely with Anthropic to analyze and approve Fable 5 to ensure alignment across the US Government and strengthen America's leadership in AI." * OpenAI rolled out GPT-5.6 only to a small set of approved customers last week after a request from the U.S. government. Threat level: U.S. officials, allies and leading AI companies have become increasingly concerned that frontier models could be misused to automate sophisticated cyberattacks or accelerate biological weapons development. * At the same time, China is moving closer to producing its own Mythos competitor while continuing to release open-weight models that rival models like Anthropic's Claude Opus 4.8. What's next: The Trump administration faces an August deadline under a recent executive order to create standardized benchmarks for evaluating the security risks of new AI models.

How Anthropic Made Its Powerful Fable 5 Model Safe to Deploy Again, Ending a Global Shutdown

The last two weeks have been tumultuous for the company. They launched Fable 5 on June 9, only to have it blocked three days later after a "national security concern" flagged by the U.S. government. Soon after, Anthropic blocked access to the model for all users globally. Now the company has provided more details into what went down. According to a press release, shortly after Fable 5's release, researchers at Amazon prompted the model in ways that helped them discover its vulnerabilities and effectively bypass its safeguards. Anthropic's internal testing confirmed this and found "many less capable models -- including Claude Opus 4.8, GPT-5.5, and Kimi K2.7 -- could identify the same vulnerabilities." The company noted that similar safety issues did not exist in Mythos 5, a model available to a small number of trusted organizations through Project Glasswing. To solve this, the AI giant trained a classifier to trigger an alert at a relatively broad safety threshold. Classifiers are AI systems that help companies detect harmful behavior, including jailbreaking efforts, by assigning prompts to a predefined category like illegal requests. However, classifiers can make mistakes too, the company pointed out. "They sometimes fail to notice potentially dangerous content, and in some cases they can be deliberately 'jailbroken,'" they said. But the broader safety thresholds protect against these mistakes and can now block "over 99% of cases" described by Amazon, according to Anthropic.

Trump administration lifts limits on Anthropic's new AI models

The Trump administration lifted Tuesday the restrictions placed on Anthropic's new Fable and Mythos models, restoring access just over two weeks since the export controls on the artificial intelligence models were put in place. Commerce Secretary Howard Lutnick announced the decision on X, writing the agency has "worked closely with Anthropic to analyze and approve Fable 5 to ensure alignment across the US Government and strengthen America's leadership in AI." Anthropic confirmed it was notified of the decision for Fable 5 and Mythos 5 and will begin restoring the models Wednesday. "We're grateful to our users for their patience, and to everyone who worked with us on redeploying the models," the company wrote on X. Lutnick, according to WIRED, informed Anthropic co-founder Tom Brown via a letter Tuesday. "A license is no longer required for the export, reexport, or in-country transfer, including deemed export or deemed reexport, of the Mythos or Fable models," Lutnick said, WIRED reported. The Trump administration sent Anthropic a federal export control order earlier this month, prompting Anthropic to abruptly pull its newest Claude Mythos 5 and Fable models just three days after their release. The models were both based on Anthropic's first Mythos model, which the company initially opted not to release to the broader public amid concerns it could supercharge hacking capabilities. Fable 5 was released to the public with safeguards in place meant to protect against uses the company considered dangerous, while a new version of Mythos was provided to a small group of cyber-defenders and infrastructure providers with fewer guardrails. Several outlets reported at the time the order came after Amazon CEO Andy Jassy reached out to the administration with concerns about a potential method of "jailbreaking," or bypassing, the guardrails on Fable. Amazon is invested in Anthropic. A source close to Anthropic previously said the Trump administration gave the company 90 minutes to pull Fable, without providing any prior indication about a threat to national security. Tuesday's decision comes just days after the government approved Claude Mythos 5 for a small group of companies.

Mythos AI: Mythos and the fight over America's most powerful AI

After a US government greenlight, global access to Anthropic's powerful AI model Fable 5 -- along with restricted access to the even more powerful Mythos 5 -- has been restored, following a standoff that strained ties between Washington and Silicon Valley. - Just three days after Fable 5 launched, the government ordered Anthropic to cut off access to both Fable 5 and Mythos 5 for anyone who was not a US citizen, even Anthropic's own foreign employees. After a US government greenlight, global access to Anthropic's powerful AI model Fable 5 -- along with restricted access to the even more powerful Mythos 5 -- has been restored, following a standoff that strained ties between Washington and Silicon Valley. - What is Mythos? - Mythos is the name of the most advanced series of AI models made by Anthropic, the San Francisco company behind the Claude chatbot. Mythos is especially good at finding weaknesses in computer systems -- and at fixing them. Because that skill could be used by hackers, Anthropic did not release the full version to the public at first. Only a small group of trusted partners -- first in the United States only, then internationally -- could use it. On June 9, Anthropic released a public, safer version called Fable 5. It had safety filters built in to stop people from misusing its hacking skills. - How did the export ban happen? - Just three days after Fable 5 launched, the government ordered Anthropic to cut off access to both Fable 5 and Mythos 5 for anyone who was not a US citizen, even Anthropic's own foreign employees. Since Anthropic could not easily check users' nationality, it shut down Fable 5 and Mythos 5 for everyone, everywhere. The government said someone had found a way to "jailbreak," or trick, Fable 5 into giving dangerous information. Anthropic said the problem was minor and that other AI models could do the same thing. - Why the U-turn? - Before Mythos's arrival, the Trump administration wanted fewer rules on AI companies, not more, hoping that would help the US beat China in the AI race. But Mythos came onto the scene when Trump's relationship with Anthropic was already rocky. In February, Anthropic, which has ties to Democrats and pushes a pro-safety stance on AI, refused to let the Pentagon use its AI without limits on surveillance and weapons. Trump in response ordered every government agency to stop using Anthropic's products, calling the company "Leftwing nut jobs" on social media. Some observers believe the government's decision to curb the release of Mythos 5 and Fable 5 was politically motivated and connected to this earlier spat, not AI safety. Anthropic archrival OpenAI, the ChatGPT-maker that enjoys smoother ties with the Trump White House, was asked to restrict the release of its own Mythos-equivalent technology, GPT-5.6 to a limited set of approved partners. - Is the White House divided? - Speaking on his company's podcast, White House adviser Marc Andreessen, a major venture capitalist, said the administration is actually torn between two goals that are hard to have at the same time. One group wants to spread American AI as widely as possible around the world, so that the US -- not China -- sets the rules for how AI is used everywhere. The other group wants to do the opposite: hold back the most powerful AI models out of fear they could be used to hack banks, hospitals or government systems, including by China. Andreessen, who supports deploying AI instead of curbing it, admitted his own side of the argument is losing, suggesting the administration is leaning toward more restriction rather than the wide release he favors. - Where do things stand now? - After easing the ban on Mythos last week to re-allow access to a small group of American cybersecurity firms, the US government told Anthropic on Tuesday that it could also resume global access to Fable 5. Still, for now, the rules of the road in the US for AI companies remain opaque, with the fate of international users of Mythos 5, which include some major institutions like the European Commission, still undefined. This could change in August. In accordance with an executive order from the White House, the government is drawing up criteria for which models would fall under new security restrictions. Anthropic meanwhile called for standards to both assess critical vulnerabilities in advanced models and respond to them, and said it will work with Amazon, Microsoft, Google and others on the effort.

Scoop: Powerful Anthropic model, Fable 5, on track to return soon

Why it matters: For developers and even non-technical early adopters, Fable 5's blackout was unprecedented and deeply jarring -- a top-tier model, already in users' hands, pulled offline due to government intervention. The big picture: The progress toward liberating Fable 5 marks a thaw in a bitter four-month standoff between the administration and Anthropic. * In another sign of de-escalation, the Commerce Department on Friday allowed Anthropic to restore access to Mythos 5, the company's strongest cybersecurity model, for a limited number of trusted users. Mythos 5 has guardrails to deter its use in cyberattacks or biological terror, and has never been freely available. * Commerce Secretary Howard Lutnick said in a Friday afternoon letter to Anthropic, first reported by Semafor, that the company "has worked with the U.S. government to address risks associated with" Mythos 5 and Fable 5. "These efforts," he continued, "have yielded significant progress. In addition, Anthropic has committed to work with the U.S. government on protocols and standards and releases." Fable 5's return is being eagerly awaited by users, who quickly fell in love with the model's deep thinking and quick, sophisticated coding. Developers were wowed by the leap in capability. Every new model, especially open-source ones, is being measured against Fable 5. * The Pentagon and National Security Agency still have to give Fable 5 the green light, so the outcome remains unpredictable. But other government agencies have determined Fable 5 can safely return to the wild. Behind the scenes: I'm told that both Lutnick and Treasury Secretary Scott Bessent have helped defuse the fight between the administration and Anthropic. * Anthropic "has worked positively with the government," one administration source told Axios. That's quite a change from the furious statement by Defense Secretary Pete Hegseth designating Anthropic a "Supply-Chain Risk to National Security," after he and Anthropic CEO Dario Amodei couldn't agree on how the Pentagon can use Claude. Zoom in: Anthropic had billed it as the most capable model ever released to the public. The "Vibe Check" newsletter from Every, a media and software company, called it "the best coding model in the world" before it was pulled, just three days after launch. * In early testing highlighted by Anthropic, the payments company Stripe used Fable 5 to overhaul a 50-million-line codebase in a single day -- a job that would have taken its engineers more than two months by hand. * When access vanished on June 12, developers found automated work frozen mid-task, and companies raced to swap in rivals, including cheaper Chinese models. The intrigue: Anthropic originally made Fable 5 available at no extra cost on several paid Claude subscription plans through June 22, giving users a short window to test its power before access vanished. * It's not yet clear whether Anthropic subscribers will get back the free run of Fable they were promised -- or whether it returns locked behind additional fees or identity checks. What we're watching: Both Anthropic and OpenAI are pushing the administration to codify a process for reviewing new models, as envisioned by President Trump in a June 2 executive order that set up a framework for voluntary government vetting of the most powerful new AI models. * The companies don't like the current case-by-case approach. * When Anthropic suspended access to Fable 5 and Mythos 5 back on June 12, the company called for "a statutory process that is transparent, fair, clear, and grounded in technical facts," and said the administration's decision to restrict those two models "does not adhere to those principles." * When OpenAI was allowed to begin a limited preview of GPT‑5.6 on Friday, the company said in a blog post: "We don't believe this kind of government access process should become the long-term default. It keeps the best tools from users, developers, enterprises, cyber defenders, and global partners who need them." Axios' Sam Sabin contributed reporting.

Anthropic Says 'We're Grateful' as Trump Administration Lifts Export Controls on Claude Fable 5 and Mytho

On Tuesday, Anthropic announced that the U.S. Department of Commerce has lifted export controls on its Claude Fable 5 and Mythos 5 artificial intelligence models. Anthropic Restores Access to Claude Fable 5 and Mythos 5 "We're grateful to our users for their patience, and to everyone who worked with us on redeploying the models," the company said in a post on X. The restrictions were imposed in mid-June under what Anthropic described as a government directive issued under national security authorities. Government Approved Rollout After Appropriate Safeguards The company said Mythos 5 has already been restored for select U.S. organizations after receiving government approval on June 26. Anthropic added that it will continue expanding access through its Glasswing cybersecurity program, which provides vetted organizations with advanced AI models for defensive security testing. In a post on X, Commerce Secretary Howard Lutnick said officials had worked closely with Anthropic to review the models before approving broader access. "Over the past two weeks, we have worked closely with Anthropic to analyze and approve Fable 5 to ensure alignment across the US Government and strengthen America's leadership in AI," Lutnick wrote. OpenAI Follows Anthropic Under AI Oversight OpenAI and Anthropic have both confidentially filed paperwork as they prepare for potential initial public offerings. Disclaimer: This content was partially produced with the help of AI tools and was reviewed and published by Benzinga editors. Photo Courtesy: Stockinq on Shutterstock.com Market News and Data brought to you by Benzinga APIs To add Benzinga News as your preferred source on Google, click here.

US lifts curbs on Anthropic's Fable, Mythos AI models

Anthropic said on Tuesday that the US Commerce Department has lifted export controls on its Fable and Mythos AI models, less than three weeks after the company was ordered to suspend access to its most advanced AI models over national security risks. Washington has stepped up oversight of new model releases to identify potential threats amid concerns that advanced AI models driving the AI boom and major capital investments could be misused by military intelligence users in China, Russia, or other countries of concern. Anthropic had abruptly disabled its Mythos 5 and Fable 5 models following the export-control order on June 12. On Friday, the US government authorized the release of Mythos 5 to some "trusted" US organizations, partially reversing the order. "We'll begin restoring access tomorrow," Anthropic said in a statement on X/Twitter. US Commerce Secretary Howard Lutnick, in a letter to Anthropic seen by Reuters, said the export controls were withdrawn and that a license was no longer required for the export of the Mythos or Fable models. "Anthropic has agreed to proactively detect and address security risks associated with the models; to work diligently with the US government on protocols and standards and releases for Mythos, Fable, and future models; and to inform the US government of any malicious activity," Lutnick said. OpenAI CEO criticizes US government's vetting process However, the government's vetting of which companies can gain access to these models has drawn criticism. OpenAI CEO Sam Altman said last week on X that extensive safety testing "is not a bad idea. I just don't like the idea of the government picking the customers." ChatGPT-maker OpenAI delayed a full public launch of GPT-5.6 at the US government's request, limiting its access to a small group of vetted partners.

Fable 5 and Mythos 5: US govt lifts restrictions on powerful AI models, Anthropic says

Anthropic will soon begin restoring access globally to its most powerful AI models, Fable 5 and Mythos 5, after the US government lifted a restriction on where they could be released, the company said Tuesday. "We've received notice that the Department of Commerce has lifted export controls on Claude Fable 5 and Mythos 5," Anthropic posted on X. "We'll begin restoring access tomorrow." Anthropic will soon begin restoring access globally to its most powerful AI models, Fable 5 and Mythos 5, after the US government lifted a restriction on where they could be released, the company said Tuesday. "We've received notice that the Department of Commerce has lifted export controls on Claude Fable 5 and Mythos 5," Anthropic posted on X. "We'll begin restoring access tomorrow." Earlier this month, US authorities blocked access to the models on national security grounds. Just four days ago, the company said it had received authorization from the government to allow a small group of American cybersecurity firms to access Mythos 5. Secretary of Commerce Howard Lutnick said in a June 26 letter to the company that "Anthropic has worked with the US government to address risks associated with the Covered Models," Politico reported. The government abruptly forced Anthropic to cut off access to its two cutting-edge artificial intelligence models on June 12 after discovering vulnerabilities in the safeguards put in place to prevent misuse of the tool. Like Anthropic, rival AI lab OpenAI has also complied with Washington's requests to restrict its own release of a new, powerful model called GPT-5.6 to a limited set of approved partners. "This isn't quite the process that we think is optimal," OpenAI CEO Sam Altman said Friday in a post on X, alongside an explanation of the GPT-5.6 launch. Anthropic did not immediately respond to a request for comment Tuesday. Earlier in the day, CIA Director John Ratcliffe compared the capabilities of the most advanced artificial intelligence models to nuclear weapons, in a tacit defense of the Trump administration's recent hard line on controlling the release of the most powerful AI technology. "In conversations with many of the president's other national security and economic security advisors, we're talking about the impact of these frontier AI models," Ratcliffe said during a speech at the AWS summit in Washington. "It would be... not misplaced to refer to their capabilities as akin to digital nuclear weapons," Ratcliffe said.

Anthropic Gets Greenlight From US to Restore Mythos Access | PYMNTS.com

This came after the AI startup resolved the White House's concerns about the potential national security danger represented by the model, Bloomberg News reported late Friday (June 26). "Anthropic has worked with the US government to address risks associated with the Covered Models," Commerce Secretary Howard Lutnick wrote to the company in a letter seen by Bloomberg News. "These efforts have yielded significant progress," he wrote, adding that the model could be released to "certain trusted partners." According to the report, the clearance cools a conflict that began earlier this month when the government blocked Anthropic from letting foreign nationals and businesses access Mythos 5 and sister model Fable 5. "In just two weeks, we have worked diligently to ensure America remains the global leader in AI while safeguarding our security," Commerce Department spokesman Benno Kass told Bloomberg. Anthropic issued a statement to Bloomberg affirming that it could begin redeploying Mythos 5 to a small group of cyberd efenders and infrastructure providers. "We are working to provision the approved set of providers and restore their access to Mythos 5 as quickly as possible. We are pleased to see this progress and continue to work with the government to expand access to Mythos 5 and make Fable 5 available for general use again." The report added that it isn't clear what measures Anthropic took to ease the government's concerns that it was possible to "jailbreak," or bypass guardrails on, Mythos and Fable. A source familiar with the matter said the company would hold further talks on Fable over the weekend. The news outlet had spoken last week with European Commission Executive Vice President Henna Virkkunen, who said that the regulator had met with the White House to discuss gaining access to Mythos. In other AI news, PYMNTS wrote last week about the way the technology has made corporate expense management more difficult. That field, the report said, "has long treated the receipt as proof of transaction. An employee submits a receipt, a finance team member reviews it and the claim is approved or flagged." This model was fine in an era when creating convincing fakes required photo editing skills or a paid online service, but no longer works now that free AI image generators can create a receipt with realistic paper texture, accurate itemization and a matching timestamp in under a minute. "These receipts have become so good, we tell our customers, 'Do not trust your eyes,'" Chris Juneau, senior vice president and head of product marketing at SAP Concur, told PYMNTS in an October report. For all PYMNTS AI coverage, subscribe to the daily AI Newsletter.

Anthropic launches new safety classifier to block jailbreak technique Amazon flagged

On June 12, Amazon engineers handed a report to the U.S. Commerce Department. Within hours, two of Anthropic's newest AI models went offline for every user on the planet. Nineteen days later, Anthropic got them back. The return of Claude Fable 5 to global availability on July 1 is the result of two weeks of Washington negotiations, a new safety classifier, and an industry jailbreak framework Anthropic built alongside Amazon, Microsoft, and Google. How Anthropic got from that shutdown to this resolution tells a specific story about where the company stands in 2026. What triggered the 19-day Fable 5 ban and how Anthropic ended it The June 12 export control directive came after Amazon researchers found a method of prompting Fable 5 to identify software vulnerabilities and, in one case, produce code showing how one could be exploited. They reported it to the Commerce Department rather than to Anthropic directly, a decision worth noting, given that Amazon is also Anthropic's largest outside investor. The order required Anthropic to restrict access to all foreign nationals, including its own non-citizen staff. Because Anthropic had no way to verify user nationality in real time, it shut both Fable 5 and Mythos 5 down for everyone worldwide. Anthropic's counter-argument was specific. Its own testing found the same vulnerabilities could be flagged by far weaker models, including its own Claude Opus 4.8, OpenAI's GPT-5.5, and China's Kimi K2.7. Every model the company tested could produce the same exploit code demonstration as Fable 5. According to Anthropic's announcement, the flagged behavior amounted to routine defensive cybersecurity work, not a unique capability of Fable 5. Notably, CEO Dario Amodei took a hands-off role in the Washington negotiations. Co-founder Tom Brown and Head of Public Policy Sarah Heck led the discussions at the Commerce Department and Office of the National Cyber Director, a deliberate choice to reduce friction with an administration with which Amodei had publicly clashed earlier in the year. Commerce Secretary Howard Lutnick announced the resolution on July 1 via X (the former Twitter). "Over the past two weeks, we have worked closely with Anthropic to analyze and approve Fable 5 to ensure alignment across the U.S. Government and strengthen America's leadership in AI," Lutnick wrote. What Anthropic changed to restore Fable 5 access globally The core technical fix is a new safety classifier trained to block the specific jailbreak technique Amazon reported in more than 99% of cases. The government's Center for AI Standards and Innovation (CAISI) independently tested and approved the new safeguards before the export controls came off. When the classifier blocks a request, the user gets redirected to Claude Opus 4.8 and notified. The tradeoff is more false positives on routine coding and debugging requests, a cost Anthropic accepted in exchange for clearing the government's concerns. The company confirmed the resolution in a June 30 press release. "As of today, June 30, the export controls on Fable 5 and Mythos 5 have been lifted." Fable 5 returned July 1 on Claude Platform, Claude.ai, Claude Code, and Claude Cowork for users globally, CNBC reported. Pro, Max, Team, and select Enterprise subscribers get up to 50% of weekly usage limits included through July 7 as compensation for the disruption, after which the model requires usage credits. AWS, Google Cloud, and Microsoft Foundry access is being restored separately. As part of the deal, Anthropic committed to pre-release government access for future frontier models, rapid information sharing on jailbreak findings, and a new HackerOne program through which security researchers can submit Fable 5 vulnerabilities for review. What the shutdown and restoration mean for Anthropic's trust and IPO The timing of the disruption could not have been more sensitive. Anthropic had confidentially filed an S-1 with the SEC on June 1 for a potential IPO, after raising a $65 billion Series H at a $965 billion valuation, as Fortune reported. When the shutdown happened in June, Anthropic's pre-IPO perpetual contract on the onchain exchange Hyperliquid fell about 3.7%, according to CoinDesk. Investors were reassessing the risk of a public listing for a company whose flagship models could be pulled without warning. Enterprise clients felt the disruption more practically. Businesses in finance, health care, and critical infrastructure lost access to AI systems embedded in production workflows with no prior notice. American Banker reported that some industry observers were already asking whether companies should rethink their reliance on frontier model vendors that can be shut down overnight by government directive. The regulatory picture beyond this episode also carries some weight. Defense Secretary Pete Hegseth designated Anthropic a supply-chain risk in March, The Hill confirmed, a separate dispute the company is still contesting. The Amazon conflict of interest adds another layer. Anthropic's largest investor reported a jailbreak to the government before informing Anthropic. That dynamic introduces ongoing tension in the company's most important commercial and government relationships simultaneously. Nineteen days from shutdown to global restoration is a number that matters for the IPO story. Public market investors and enterprise clients were both watching what Anthropic did with a genuine crisis. Papers and policy commitments are one thing. An actual government-ordered shutdown is the real test. Anthropic handled this one in under three weeks, with CAISI sign-off and a new industry framework attached. Why the new AI jailbreak framework may outlast the Fable 5 story The four-criteria jailbreak scoring system Anthropic is developing with Amazon, Microsoft, and Google could end up as the most consequential outcome of the whole episode. The AI industry still lacks an agreed-upon way to communicate how dangerous a jailbreak actually is, which is partly why a borderline safety finding turned into a 19-day global shutdown. 4 scoring criteria for AI jailbreaks * Capability gain * Breadth of capability * Ease of weaponization * Discoverability The most severe findings trigger immediate mitigations. A 24/7 monitoring team watches jailbreak submission channels. If the framework gets adopted broadly, future findings would go through a structured triage process rather than escalating directly to emergency export controls. Anthropic framed the framework as an invitation, not just an announcement, calling on other AI developers to join. The June 2 White House Executive Order on AI innovation and security, which Anthropic helped shape over 10 weeks of agency discussions, creates a policy environment where a shared jailbreak standard could become government-recognized practice. That would give Anthropic lasting influence over how AI safety gets measured and enforced across the industry, well beyond the resolution of one 19-day ban. The Arena Media Brands, LLC THESTREET is a registered trademark of TheStreet, Inc. This story was originally published July 3, 2026 at 8:33 PM.

Anthropic's Mythos is coming back for a select group of entities approved by the U.S. government

Why it matters: The abrupt removal of Mythos 5 and Fable 5 created uncertainty within the industry and among allies around the world whose cyber capabilities were stunted by the loss. Inside the letter: Anthropic's engagement with the government has "yielded significant progress," the June 26 letter states. * "In addition, Anthropic has committed to work with the U.S. government on protocols and standards and releases for the Covered Models," the letter states, without elaborating. * The Commerce Department evaluated "diversion risks" presented in the models, and Lutnick determined that appropriate safeguards are in place. * "Accordingly, a license will no longer be required to export, reexport, or in-country transfer (including deemed exports and reexports) the Claude Mythos 5 Model to entities identified in Annex A to this letter and their foreign national employees, or to Anthropic's foreign national employees," the letter states. Between the lines: The government's June 12 order that prompted Anthropic to take down the models is part of ad hoc regulatory regime. * Export controls remain in place for all organizations not explicitly approved by the administration, and the letter does not change restrictions on Fable 5. * The loosening of restrictions on Anthropic comes after OpenAI's model was subjected to government reviews that the company said were not sustainable. Meanwhile, in the letter, Lutnick made clear that he can change his mind: "I reserve the right to reevaluate and adjust the scope of license requirements on the Covered Models, should circumstances change," the letter states. * Lutnick also reserved the right to change the list of entities that have access "at any time." * Semafor first reported on the letter. For the record: An Anthropic spokesperson told Axios that the company has received the notice and is now "working to provision the approved set of providers and restore their access to Mythos 5 as quickly as possible." * "We are pleased to see this progress and continue to work with the government to expand access to Mythos 5 and make Fable 5 available for general use again," the spokesperson added. Catch up quick: Lutnick slapped sweeping export controls on Anthropic after Amazon raised jailbreaking concerns, and the company failed to respond seriously, according to the administration. * It's not clear how exactly those concerns were addressed. What to watch: There's more regulatory uncertainty ahead, as an August deadline looms for implementation of a cybersecurity executive order. The order calls for federal agencies to create a formal process for assessing AI models' cyber capabilities.

Anthropic's Fable 5 to come back online after two-week ban by US government - report

Fable 5, Anthropic's most powerful AI model, is set to return to worldwide availability following more than two weeks of it being banned by the US government, Axios reported on Saturday. A source from Anthropic told Axios that the security concerns raised by the Trump administration were resolved and that the model will be redeployed outside of the US soon. According to insiders, the issue should be resolved in the coming week, following negotiations between Anthropic and the US government. The Trump administration banned access to Fable 5 on June 12, following several months of conflict between US officials and the company over access to the technology, regulations, and safety mechanisms. It is Anthropic's understanding that the government believes there is a method to bypass, or "jailbreak," a safeguard that would prevent Fable 5 from being used to identify software vulnerabilities, the company said. Anthropic called the Trump administration's decision to ban Fable 5 a decision based solely on "verbal evidence of a potential narrow, non-universal jailbreak". "We disagree that the finding of a narrow potential jailbreak should be cause for recalling a commercial model deployed to hundreds of millions of people," the company said. US, Anthropic to work on AI regulations Mythos 5, Anthropic's cybersecurity-centered model, was also limited to authorized individuals under heavy regulations imposed by the Trump administration. "Anthropic has worked with the US government to address risks associated with Mythos 5 and Fable 5," said US Commerce Secretary Howard Lutnick on Friday in a letter shared by tech news outlet Semafor. "These efforts," he continued, "have yielded significant progress. In addition, Anthropic has committed to working with the US government on protocols and standards and releases." Anthropic also mentioned that Mythos 5 is currently operating under "heavy guardrails," which would make it impossible to use for cyberattacks or the development of biological weapons, two of the main concerns raised by US officials. Finally, both Anthropic and OpenAI, currently two of the most prominent AI development companies, are pushing to codify US President Donald Trump's executive order to "voluntarily vet new AI models." With both companies planning initial public offerings (IPOs) later this year, they aim to adopt more transparent frameworks that give government officials the power to block their developments.

US Lifts Restrictions on Anthropic's Claude Mythos, Allows it Export the Technology

In just over two weeks after they banned exports of Claude Mythos 5 and Fable 5 models, the US Administration has now lifted all restrictions on Anthropic's two powerful AI models and allowed the company to bring them back online. They also would no need a license for exports or in-country transfers of the models. Looks like Trump and Dario Amodei have smoked the peace pipe... at least for now! A report published by The New York Times said they saw a letter from Commerce Secretary Howard Lutnick detailed the end of the ban that was enforced through an order issued on June 12. In a post on their X handleimmediately thereafter, Anthropic said it would begin restoring access to its A.I. models on Wednesday. According to the NYT report, Lutnick had told Anthropic they no longer need a license for exports or in-country transfer of the Claude Mythos and Claude Fable AI models. "Anthropic has taken steps in close coordination with the U.S. government to address the risks associated with Claude Mythos 5 and Claude Fable 5," Lutnick said. The move finally de-escalates their most recent fued, which formed the latest chapter of Anthropic's blow-hot, blow-cold relationship with the Trump administration. However, the company is still battling lawsuits against the federal government over the latter billing them as a supply chain risk for AI services to the administration. The report says the Commerce Department lifted the export controls after weeks of discussions with Anthropic over the guardrails built into its AI models. Last week, they had announced a mini-deal under which the AI startup was allowed to open up access to the Mythos model for some "friendly partners". In the latest communication with the company, Lutnick said Anthropic had agreed to take steps including proactively detecting and addressing security risks for the AI models in close collaboration with the federal government as well as preparing protocols and standards for these and future models. However, there is a caveat. Lutnick says in his letter that his department "reserves the right to re-evaluate the decisions made in this letter" if Anthropic fails to adhere to its commitments or circumstances change. While Anthropic might heave a sigh of relief for being let off the hook on this front, the larger question of how President Trump's policy around the AI industry oscillates between a totally hands-off approach to one of stringent control continues to cause concern. His executive order asking companies to voluntarily provide oversight to the government before releasing frontier AI models to the public is seen as a major step towards regulating technology. At a global level, countries are also concerned about putting all their AI eggs into the US basket with reports emerging of Asian nations looking at each other and China - they recently beat the US in supercomputing and launched a new AI model comparable to their best. India too is understood to be reviewing its options on this front as the country celebrates the 11th anniversary of its Digital India project.

US close to allowing Anthropic to restore Fable 5 model, Axios reports

Anthropic had abruptly disabled its most advanced AI models - Mythos 5 and Fable 5 - for all users after the government's June 12 export control order. The Trump administration is close to allowing Anthropic to restore access to its Fable 5 model, Axios reported on Saturday, citing a source close to the situation. Reuters could not immediately confirm the report. Anthropic and the White House ⁠did ⁠not immediately respond to requests for comment. Anthropic had abruptly disabled its most advanced AI models - Mythos 5 and Fable 5 - for all users after the government's June 12 export control order. Insiders expect the administration's limits on Fable 5 could be lifted as ⁠soon as this coming week, the report said. Conversations between the parties are expected to continue ⁠over the weekend, and Anthropic expects to restore Fable access soon, the report added, citing a second source. Anthropic said on Friday that the US government has allowed it to release its Claude Mythos 5 artificial intelligence model to some "trusted" U.S. organizations, partially reversing an order two weeks ago to suspend access over national security risks. The government is also moving towards allowing Anthropic to ⁠release Fable soon, although a timeline is unclear, a source familiar with the directive told Reuters. Both Fable 5 and Mythos use the same underlying AI model, but Fable 5 is designed to be widely available for public use whereas some safeguards are lifted for Mythos.

Anthropic restores access to Mythos 5 for select organizations

On June 12, Commerce Secretary Howard Lutnick sent Anthropic a letter giving the company 90 minutes to disable two of its most powerful AI models for every customer it had, anywhere in the world. Anthropic confirmed it complied. Two weeks of negotiations in Washington followed. On June 26, Lutnick sent Anthropic another letter. Anthropic confirmed the outcome on X: limited access to Mythos 5, the company's strongest cybersecurity model, restored for a defined group of American organizations. Fable 5, Anthropic's broader general-purpose frontier model, remains offline. What Howard Lutnick's June 26 letter said about Mythos 5 Lutnick wrote that he had "determined that appropriate safeguards are in place to permit certain trusted partners to access the Claude Mythos 5 Model," TechCrunch reported. Semafor first reported the letter. The renewed access covers approximately 100 U.S. organizations, including government agencies and private companies, many of them Fortune 500 firms, for defensive cybersecurity purposes. Non-American employees at those approved organizations are also cleared to use the model. Anthropic confirmed the development in a post on X: "Since June 12, we've been working closely with the US government to restore access to Claude Mythos 5 and Fable 5. Today, the government notified us that Mythos 5, our strongest cybersecurity model, can be redeployed to a set of US organizations that operate and defend critical infrastructure. We're restoring access for these organizations quickly, and we're continuing to work with the government to expand access to Mythos 5 and make Fable 5 available for general use again." Fable 5, Anthropic's most recent general-purpose frontier model, is not part of this restored access. CNN reported that conversations between Anthropic and the government are expected to continue, with Fable 5 access still under negotiation. How the June 12 Mythos and Fable 5 ban came about On June 9, Anthropic launched Fable 5 publicly and opened limited access to Mythos 5 through Project Glasswing, its restricted program for critical infrastructure partners. Three days later, the White House called Anthropic and said the models posed a national security threat. The company had 90 minutes to disable them. As TheStreet reported, Amazon CEO Andy Jassy had flagged to administration officials that Amazon researchers had used Fable 5 to extract information related to cyberattacks. The Commerce Department subsequently sent Anthropic its export control directive. Anthropic said the letter provided no detailed national security explanation. Anthropic announced the shutdown on X the same evening. "The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees. The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance." Anthropic called the restriction "a misunderstanding" and said it disagreed that the jailbreak finding warranted pulling a commercial model deployed to hundreds of millions of people. Senior engineers and scientists flew to Washington to work with the Commerce Department and the Office of the National Cyber Director. Why Mythos 5 and its cybersecurity capabilities drove the dispute Mythos 5 is Anthropic's strongest cybersecurity model. Before the shutdown, it was available through Project Glasswing to partners including Cisco and JPMorgan Chase. The model can autonomously discover software vulnerabilities at machine speed. Before it was pulled back, it had identified a 27-year-old vulnerability in OpenBSD, a 16-year-old flaw in FFmpeg, and thousands of other high-severity weaknesses across major operating systems and web browsers. That capability is the core of the dispute. A model that finds vulnerabilities this quickly is useful for defenders. It raises direct concerns about what adversaries could do with the same tool. An authorized red-team evaluation at the NSA on June 11 reportedly showed Mythos infiltrating nearly all of the agency's classified systems within hours, an outcome that reportedly accelerated the June 12 directive. The June 26 clearance reflects the government's answer to that dual-use problem for now: access limited to organizations defending the infrastructure that the model is most likely to be used against. The OpenAI parallel and what the Mythos 5 decision signals for AI regulation The Mythos 5 clearance arrived on the same day the Trump administration separately asked OpenAI to limit the rollout of GPT-5.6. OpenAI CEO Sam Altmanwrote on X that the staggered release was "bad news," as the company had planned an open-access launch. As TheStreet reported, the administration is now requiring early government access to frontier models before they reach the public. The two cases involve different companies and different circumstances, but both show Washington moving from reactive to preemptive in how it handles the most capable AI systems. Frontier model releases above a certain capability threshold are now being reviewed and gated, at least informally, before they reach general users. For Anthropic, the June 26 letter is a partial win after two weeks of negotiating while its flagship products sat offline. Mythos 5 is back for 100 organizations. Fable 5 is still the open question. The 90-minute shutdown that started this took two weeks to partially undo. A full restoration may take longer. The Arena Media Brands, LLC THESTREET is a registered trademark of TheStreet, Inc. This story was originally published June 29, 2026 at 8:17 AM.

Trump administration lifts export controls on Anthropic's most powerful AI models, ending bitter standoff

The Trump administration lifted emergency export controls on Anthropic's most advanced artificial intelligence models on Tuesday night, according to a top White House official -- abruptly ending a bitter standoff that disrupted the global tech sector. "Anthropic has agreed to proactively detect and address security risks associated with the models; to work diligently with the US government on protocols and standards and releases for Mythos, Fable, and future models; and to inform the U.S. government of any malicious activity," Commerce Secretary Howard Lutnick wrote in a letter obtained by The Post. "The controls ... are withdrawn. A license is no longer required for the export, reexport, or in-country transfer, including deemed export or deemed reexport, of the Mythos or Fable models," he added. The move cancelled a June 12 White House directive that banned all foreign nationals from accessing Anthropic's flagship Fable 5 and Mythos 5 systems. "We've received notice that the Department of Commerce has lifted export controls on Claude Fable 5 and Mythos 5," Anthropic wrote on X. "We'll begin restoring access tomorrow, and will share an update soon." The government previously said it disabled the cutting-edge software worldwide because the San Francisco-based startup could not reliably filter out foreign users in real time. The sudden policy reversal follows intense corporate lobbying and back-channel negotiations between Anthropic executives and Lutnick. The Post previously revealed those talks, noting President Trump shifted his stance after meeting Anthropic CEO Dario Amodei at the Group of Seven summit in France. Tuesday's rollback was poised to deliver immediate relief to the broader technology market. Enterprise clients faced significant operational bottlenecks during the nearly three-week blackout. "Under President Trump's leadership the United States is the undisputed winner in the AI race," White House Chief of Staff Susan Wiles wrote on X. "My gratitude to companies across industries who continue to work closely with the White House to implement the President's EO: 'Promoting Advanced AI Innovation and Security.'" Major corporations rely heavily on Anthropic's models for complex data analysis, while commercial developers use the platform to accelerate software coding. The initial government crackdown stemmed from a classified cybersecurity evaluation. US intelligence agencies discovered the Mythos model could expose hidden vulnerabilities in secure government computer code, and officials quickly dusted off decades-old, hardware-focused export laws to mandate the software ban. Tech industry advocates condemned the restriction as arbitrary. They said rival models from companies like OpenAI possess identical capabilities but avoid government interference. Anthropic has previously clashed with Washington over defense contracts. The startup refused to allow the military to integrate its tools into autonomous weapons systems, prompting the War Department to label Anthropic a supply-chain risk. A federal judge blocked the designation in March. Leaked internal chats have highlighted deep anger among Anthropic employees. Some staffers accused the White House of punishing the company for its strict corporate ethics policies. Tech analysts view the costly disruption as a stark warning for Silicon Valley. The Post has approached Anthropic, the White House and the Department of Commerce for comment,

Trump Admin Says Claude Mythos 5 Can Give Limited Access to "Trusted Partners

The rigmarole set up by the White House under Trump around AI hegemony has led G7 nations and India to see Red with calls for indigenous AI development gaining traction yet again Anthropic has received approval from the Trump regime to restore limited access of its powerful Mythos 5 AI model amidst concerns from the White House over the technology's potential threat to national security. Commerce Secretary Howard Lutnick now says the model can be released to "certain trusted partners." Who these trusted partners remain in the realm of the White House whims as there is no specific information from Lutnick or his team. India, which was given late access to the AI model, found itself in the lurch when the federal government ordered Anthropic to pull the plug a day after Mythos 5 and Fable 5 model (with guardrails) were released. Given that President Trump has cozied up to our western neighbour in recent times should be a matter of concern, though suddenly there are friendly noises coming from Washington with Secretary of State Marco Rubio claiming yesterday that Trump could be visiting India as early as next year, signaling that all's fine between him and Prime Minister Narendra Modi. The problem remains that diplomacy under this Trump regime is more fickle than English weather, as we have seen from his government's efforts at securing a deal with Iran. A bigger challenge is the actual words used by Lutnick's letter to Anthropic CEO Dario Amodei, which was accessed and quoted by Bloomberg yesterday. "Anthropic has worked with the US government to address risks associated with the Covered Models. These efforts have yielded significant progress," he wrote, saying that the model could be released to "certain trusted partners," he says in the letter. While we believe that a central clearing house for AI models is a great idea, given its potential to wreak havoc to humanity, it would have been better if it was a multilateral body and not an administration headed by a maverick. From Anthropic's point of view, the letter must have raised a collective sigh of relief as this is the second time the AI startup has been on the crosshairs of the Trump administration. The first being their face-off around AI use in autonomous weapons and public surveillance - a matter that is being debated in court via Anthropic's lawsuit. Commerce Department spokesman Benno Kass later claimed that in two weeks, the two parties "worked diligently to ensure America remains the global leader in AI while safeguarding our security." Now, this is what the G7 leaders and PM Modi were critical of. Especially since Lutnick's letter doesn't mention change in restrictions around Fable 5. On their part, Anthropic too appeared a tad clueless. "We received notice from the US government that Mythos 5, our strongest cybersecurity model, can be redeployed to a small group of cyber defenders and infrastructure providers. We are working to provision the approved set of providers and restore their access to Mythos 5 as quickly as possible. We are pleased to see this progress and continue to work with the government to expand access to Mythos 5 and make Fable 5 available for general use again," their statement said. There is no mention of what steps Anthropic took to satisfy the concerns over jailbreak possibilities or bypassing the guardrails. Media reports indicate that Anthropic expects the discussions to continue over the weekend over Fable 5, claims Bloomberg, which also noted that a policy framework (Anthropic has one) to deal with such situations were also discussed. When the government asked Anthropic to pull back on exports of the models, they had taken to the blog and noted that "If this standard was applied across the industry, we believe it would essentially halt all new model deployments for all frontier model providers." They also said perfect jailbreak resistance is not currently possible for any model provider. Which is probably why OpenAI had to curtain its GPT-5.6 launch earlier this week and said later that it would be rolling out a preview version to select partners approved by team Trump. While the actual reasons for the ban or its withdrawal might take some time leaking to the rest of the world, it remains the most significant intervention by the US government till date into the operations of an AI company. The US seeking hegemony over AI has caused concern across the world with Modi joining G7 leaders including France's Emmanuel Macron in criticising the move. The Indian premier, who met Trump on the sidelines of the meet, told an external gathering that for India, AI means "All Inclusive", thus highlighting that technology can lead to progress only when democratised. Back home, the decision caused industry leaders to discuss AI and sovereignty with the Niti Aayog following through with a plan to supervise India's domestic AI mission. The planning body is preparing a strategy to develop sovereign AI infrastructure to boost AI use in governance and create a vast talent pool via targeted fiscal and policy initiatives. A section of tech experts in India had for long voiced concern over data sovereignty and the Anthropic episode has raised its decibel levels even more. Zoho CEO Sridhar Vembu said this shows the growing link between technology, national security, and economic sovereignty. He took to X and declared that "globalisation is dead and Bharat must find her own way ahead." Support for this view was overwhelming with Sarvam co-founder and CEO Pratyush Kumar noting that countries cannot afford to mistake access to cutting edge AI systems for true technological ownership. "Fable 5 ban is a good instigation for more people to engage in recognising the need for sovereignty," Kumar said via his X handle. Writing for The Print, KBS Sidhu is a former IAS officer who retired as Special Chief Secretary, Punjab, noted that "India's response to Claude Mythos must begin not with a committee, but with a phone call. The government should formally approach Anthropic for inclusion in its trusted-partner programme -- the same access extended to Microsoft, Apple, and Google." Maybe, Trump has won a domestic battle, but it looks like his moves to control AI as a fiefdom of the United States might just be the tonic required for scientists in other countries to create their own. Maybe, India should take a leaf out of the playbooks of France and China who have supported their domestic efforts of developing models like Mistral AI and DeepSeek respectively.

Anthropic says US lifted export controls on Fable, Mythos models By Investing.com

Investing.com-- Anthropic said on Tuesday evening that the U.S. government had lifted export controls on its Claude Fable 5 and Mythos 5 artificial intelligence models. The AI startup will begin restoring access from Wednesday, Anthropic said in a blog post. A Politico report earlier on Tuesday said Washington was close to lifting its export controls on Fable and Mythos. Get more breaking news on the biggest AI companies by subscribing to InvestingPro Anthropic said Fable and Mythos will be available on its Claude Platform, Claude.ai, Claude Code, and Claude Cowork. The company was also working to restore access on Amazon Web Services, Google Cloud, and Microsoft Foundry, "as quickly as possible." Anthropic had abruptly disabled public access to its Mythos 5 and Fable 5 models earlier in June following an order from the White House to block foreign nationals from using the models. Anthropic said the export control directive came following a report in which Amazon researchers found a means of bypassing Fable 5's safeguards. The company said it had worked closely with the government and partners, including Amazon, over the past two weeks to improve safety. Last week, Anthropic said Washington had allowed the AI startup to release Mythos to some "trusted" U.S. organizations, heralding a potential reversal in the government order. Anthropic had long delayed the public release of its Fable and Mythos models, citing concerns over their potential use in developing critical cybersecurity exploits. The company said on Tuesday that Fable 5 did not present such risks, and that it had launched the model "with the strongest safeguards we've ever applied to a model." The startup had initially consulted with several major U.S. organizations and banks over the models, and had released them publicly in early-June.

US allows Anthropic to release Mythos to 'trusted partners'

The US government has partially lifted restrictions on Anthropic's advanced AI model, Claude Mythos 5, allowing trusted partners access after initial concerns about its potential misuse by adversaries. This move follows a two-week period where the AI firm collaborated with officials to address security risks. WASHINGTON: The U.S. government on Friday allowed Anthropic to release its powerful Claude Mythos 5 AI model to some "trusted partners," according to a Commerce Department letter seen by Reuters. The action comes two weeks after the government ordered the AI firm to suspend access to some of its models, due to fears they could be deployed ⁠by military ⁠intelligence users in China, Russia or other countries of concern. More than 100 companies and institutions will now have access to Mythos 5, including many Fortune 500 companies, a source familiar with the new directive said, declining to be identified due to the sensitivity of the matter. Also read | US judge won't immediately dismiss criminal charges against Gautam Adani Anthropic and the White House did not immediately comment. Anthropic had abruptly disabled its most advanced AI models - Mythos 5 and ⁠Fable 5 - for all users after the government's export control order. "Since the issuance of my June 12 letter, Anthropic has worked with the U.S. government ⁠to address risks associated with the Covered Models. These efforts have yielded significant progress," U.S. Commerce Secretary Howard Lutnick said in the letter to Anthropic. Also read | Mystery solved? HDFC finds no trace of truth in ex-chair's claims Lutnick added that an export license will no longer be needed for Claude Mythos 5 Model to trusted companies and their foreign national employees, or to Anthropic's foreign national employees but restrictions will remain in place for companies that are not on the approved list. "In just two weeks, we have worked diligently to ensure America remains the global leader in AI while safeguarding our security," a Commerce Department spokesperson said. The letter did not mention ⁠the status of Fable 5. The government is moving towards allowing Anthropic to release Fable as well, although a timeline is unclear, the source said. IPO-bound Anthropic's relationship with the U.S. government has been rocky this year. The company refused to allow the U.S. military to use its AI models for domestic surveillance and fully autonomous weapons systems and the government retaliated by putting it on a national security blacklist.

US allows Anthropic to release Mythos AI to 'trusted' US organizations

WASHINGTON - Anthropic said on Friday that the U.S. government has allowed it to release its powerful Claude Mythos 5 artificial intelligence model to some "trusted" U.S. organizations, partially reversing an order two weeks ago to suspend access over national security risks. More than 100 companies and institutions will now have access to Mythos 5, incluing many Fortune 500 companies, a source familiar with the new directive said, declining to be identified due to the sensitivity of the matter. Concern that powerful AI systems could be misused by military intelligence users in China, Russia or other countries of concern has prompted President Donald Trump's administration to take an aggressive approach to oversight of releases of Anthropic's and rival OpenAI's frontier models. OpenAI said earlier in the day that it was delaying a full public launch of GPT-5.6 at the U.S. government's request, limiting its access to a small group of vetted partners whose details were shared with the authorities. Anthropic had abruptly disabled its most advanced AI models -- Mythos 5 and Fable 5 -- for all users after the government's June 12 export control order. Today, the government notified us that Mythos 5, our strongest cybersecurity model, can be redeployed to a set of US organizations that operate and defend critical infrastructure," Anthropic said in a statement on Friday. "We're restoring access for these organizations quickly, and we're continuing to work with the government to expand access to Mythos 5 and make Fable 5 available for general use again," it added. The government's vetting of which companies can gain access to Mythos has drawn much criticism. "No one knows how these companies are picked and why everyone else is excluded," said John Coleman, legislative counsel for the Philadelphia-based nonpartisan free speech organization, the Foundation for Individual Rights and Expression. "This is putting too much power in the hands of the government. There's little transparency and it raises questions about the rule of law." OpenAI boss Sam Altman echoed concerns about the government's choosing of who gets access to top models in a post on X. Extensive safety testing "is not a bad idea. I just don't like the idea of the government picking the customers," he wrote. Experts have said that Mythos models, in the wrong hands, could dramatically accelerate sophisticated cyberattacks, particularly in sectors such as banking that rely on complex, interconnected, and often decades-old technology systems. A letter from U.S. Commerce Secretary Howard Lutnick to Anthropic said there had been "significant progress" in work done by the company with the government to address "risks associated with the Covered Models." It was not immediately clear what safeguards had been adopted. Anthropic said earlier this month that it understood the government believed there is a method of bypassing, or "jailbreaking," a safeguard that would prevent Fable 5 from being used in identifying software vulnerabilities. Lutnick said in the letter that an export license will no longer be needed for Mythos 5 to trusted companies and their employees who are not U.S. citizens, or to Anthropic's employees who are not U.S. citizens, but licensing restrictions will remain in place for companies that are not on the approved list. The source said many of the approved companies are part of Anthropic's Project Glasswing, which includes about 100 well-known tech companies and institutions. The government is also moving towards allowing Anthropic to release Fable soon, although a timeline is unclear, the source said. Both Fable 5 and Mythos use the same underlying AI model, but Fable 5 is designed to be widely available for public use whereas some safeguards are lifted for Mythos. Both Anthropic and OpenAI plan to go public. Anthropic's relationship with the U.S. government has, however, been particularly rocky. The company refused to allow the U.S. military to use its AI models for domestic surveillance and fully autonomous weapons systems and the government retaliated by putting it on a national security blacklist. The government's restrictions on Anthropic and OpenAI follow Trump's signing of an executive order this month establishing a voluntary framework for AI developers to offer "covered frontier models" to the U.S. government for up to 30 days before releasing them to trusted partners. The administration's latest order is "a practical interim step, but leaves unresolved the larger issue of how companies can widely release updated models," said Kate Koren, an analyst at the Center for Strategic and International Studies in Washington and a former Commerce Department official. "The longer there isn't a system in place that will allow U.S. companies to widely release new models, the more likely it is that China will be able to catch up," she said.

Anthropic nears deal with U.S. to lift AI model export restrictions By Investing.com

Anthropic is moving closer to an agreement with the Trump administration that could lead to the removal of U.S. restrictions on two of its most advanced artificial intelligence models, Bloomberg reported, citing people familiar with the matter. The report said Commerce Secretary Howard Lutnick has made progress in addressing the government's security concerns over Anthropic's Fable 5 and Mythos 5 models. The export controls could be lifted once officials across the administration approve the agreement, according to the sources. The discussions follow weeks of negotiations after the Commerce Department imposed restrictions on the two AI systems over concerns that users could bypass built-in safety guardrails. Senior Anthropic executives, including co-founder Tom Brown, have met with Lutnick and other administration officials in recent days, according to the report. U.S. officials have told the company the restrictions will be removed once the government's security concerns have been addressed. The timing of a final decision remains uncertain, as the White House and other agencies involved in shaping U.S. AI policy would also need to approve any agreement. Anthropic did not immediately respond to a request for comment. The restrictions were imposed about two weeks ago through a letter from Lutnick that barred Anthropic from allowing foreign nationals to access Fable 5 and Mythos 5. In response, the company suspended global access to both models while negotiations continued. The dispute marked one of the most significant U.S. government interventions in the operations of a major AI developer. It also came shortly after Anthropic confidentially filed for an initial public offering at a reported valuation of more than $900 billion. The administration has since widened its scrutiny of advanced AI systems. On Friday, OpenAI said it would limit access to a preview version of its GPT-5.6 model to a small group of government-approved partners following pressure from U.S. officials over concerns about the model's capabilities. Anthropic introduced its Mythos model in April to a limited group of organizations, citing cybersecurity risks. Earlier this month, it launched Fable 5 as a public-facing version with additional safeguards, while Mythos 5 was intended for a smaller group of cybersecurity institutions. Anthropic has argued that completely preventing users from bypassing AI safety protections is not currently possible for any frontier AI developer.

Claude Fable 5 is back worldwide: US lifts export curbs

Anthropic is putting Claude Fable 5 back online worldwide starting Wednesday, July 1, after the U.S. Department of Commerce dropped the export controls that kept the model offline for 18 days. The outage started with a June 12 directive that barred foreign nationals from using Claude Fable 5 and Mythos 5. Anthropic then pulled both models worldwide because it couldn't verify every user's nationality in real time. Access is returning because the Commerce Department no longer requires a license, after Anthropic agreed to take a more proactive approach to security issues, work with the U.S. government on future standards for powerful models, and ship a fix for the jailbreak Amazon discovered, one that could steer the model toward identifying software vulnerabilities instead of sticking to ordinary chatbot prompts. If you use Claude for development or research, having Fable 5 back matters. Even so, the brief ban has already intensified arguments around AI oversight, shared standards for jailbreaks, and how much users rely on U.S.-based providers. Mythos 5, for its part, is only coming back for a limited set of U.S. critical-infrastructure organizations. You can use Claude Fable 5 again through Anthropic's web app, the developer API, AWS, Google Cloud, and Microsoft Foundry. Some paid subscribers will also get temporary free usage before their usage credits start applying again.

US lifts curbs on Anthropic's cutting-edge Fable, Mythos AI models

STORY: Anthropic says the U.S. has lifted export controls on its latest AI models. The move comes less than three weeks after the company was forced to suspend access to its newest products over national security risks. That prompted Anthropic to abruptly disable its Mythos 5 and Fable 5 models. Washington has stepped up oversight of new releases to identify potential threats. That is over concern that advanced AI could be misused by intelligence agencies in China, Russia and elsewhere. Now Anthropic says it will start restoring access from Wednesday. In a letter seen by Reuters, U.S. Commerce Secretary Howard Lutnick said the export controls were withdrawn, and a license was no longer required for the export of Mythos and Fable. Lutnick says Anthropic has agreed to work with the administration on protocols and standards, and will proactively seek to detect security risks. The government's vetting of which companies can access the latest models has drawn widespread criticism. Last week, OpenAI boss Sam Altman said he didn't object to safety testing, he just didn't like Washington getting to pick the customers.

US government lifts restrictions on powerful AI models, Anthropic says

(Alliance News) - Anthropic PBC will soon begin restoring access globally to its most powerful artificial intelligence models, Fable 5 and Mythos 5, after the US government lifted a restriction on where they could be released, the company said Tuesday. "We've received notice that the Department of Commerce has lifted export controls on Claude Fable 5 and Mythos 5," Anthropic posted on X. "We'll begin restoring access tomorrow." Earlier this month, US authorities blocked access to the models on national security grounds. Just four days ago, the company said it had received authorization from the government to allow a small group of American cybersecurity firms to access Mythos 5. Secretary of Commerce Howard Lutnick said in a June 26 letter to the company that "Anthropic has worked with the US government to address risks associated with the Covered Models," Politico reported. The government abruptly forced Anthropic to cut off access to its two cutting-edge artificial intelligence models on June 12 after discovering vulnerabilities in the safeguards put in place to prevent misuse of the tool. On Tuesday, Lutnick told Anthropic in a letter that the Trump administration had "withdrawn" its previous restrictions on the release of the company's models, Politico reported. The letter indicated that the Trump administration was satisfied, at least for now, that Anthropic had "taken steps in close coordination with the US government to address the risks associated with Claude Mythos 5 and Claude Fable 5." Like Anthropic, rival AI lab OpenAI Group PBC has also complied with Washington's requests to restrict its own release of a new, powerful model called GPT-5.6 to a limited set of approved partners. "This isn't quite the process that we think is optimal," OpenAI CEO Sam Altman said Friday in a post on X, alongside an explanation of the GPT-5.6 launch. Anthropic did not immediately respond to a request for comment Tuesday. The Trump administration issued an executive order on June 2 calling for the federal government to take multiple steps over the subsequent two months to take actions on AI and cybersecurity - including creating a voluntary "framework" for private companies, such as Anthropic and OpenAI, to test and release their powerful "frontier" AI models in collaboration with the government. Susie Wiles, the president's chief of staff, posted Tuesday on X that the Trump administration was grateful for the cooperation from tech companies, though she didn't name any. "My gratitude to companies across industries who continue to work closely with the White House to implement the president's" executive order on AI and cybersecurity, Wiles said. "This includes excellent work around advanced model access and guardrail testing and security." Earlier in the day, CIA Director John Ratcliffe compared the capabilities of the most advanced artificial intelligence models to nuclear weapons, in a tacit defense of the Trump administration's recent hard line on controlling the release of the most powerful AI technology. "In conversations with many of the president's other national security and economic security advisors, we're talking about the impact of these frontier AI models," Ratcliffe said during a speech at the AWS summit in Washington. "It would be...not misplaced to refer to their capabilities as akin to digital nuclear weapons," Ratcliffe said.

US lifts curbs on Anthropic's Fable, Mythos AI models

June 30 (Reuters) - Anthropic said on Tuesday that the U.S. Commerce Department has lifted export controls on its Fable and Mythos AI models, less than three weeks after the company was ordered to suspend access to its most advanced AI models over national security risks. Washington has stepped up oversight of new model releases to identify potential threats amid concerns that advanced AI models that are driving the AI boom and major capital investments could be misused by military intelligence users in China, Russia or other countries of concern. Anthropic had abruptly disabled its Mythos 5 and Fable 5 models following the export-control order on June 12. On Friday, the U.S. government allowed it to release Mythos 5 to some "trusted" U.S. organizations, partially reversing the order. "We'll begin restoring access tomorrow," Anthropic said in a statement on X. U.S. Commerce Secretary Howard Lutnick, in a letter to Anthropic seen by Reuters, said the export controls were withdrawn and that a license was no longer required for the export of the Mythos or Fable models. "Anthropic has agreed to proactively detect and address security risks associated with the models; to work diligently with the U.S. government on protocols and standards and releases for Mythos, Fable, and future models; and to inform the U.S. government of any malicious activity," Lutnick said. However, the government's vetting of which companies can gain access to these models has drawn criticism. OpenAI CEO Sam Altman said last week on X that extensive safety testing "is not a bad idea. I just don't like the idea of the government picking the customers." ChatGPT-maker OpenAI delayed a full public launch of GPT-5.6 at the U.S. government's request, limiting its access to a small group of vetted partners. (Reporting by Alexandra Alper, Costas Pitas, Ismail Shakil, Chris Thomas, Deepa Seetharaman; editing by Paul Thomasch, Rashmi Aich and Stephen Coates)

US to lift export controls on Anthropic's Fable AI model on Tuesday, source says

June 30 (Reuters) - The U.S. Commerce Department is expected to lift export controls on Anthropic's Fable 5 AI model on Tuesday, less than three weeks after the company was ordered to suspend access to its most advanced AI models over national security risks, according to a source familiar with the matter. Anthropic abruptly disabled its Mythos 5 and Fable 5 models following the export-control order on June 12. On Friday, Anthropic said the U.S. government had allowed it to release its Claude Mythos 5 artificial intelligence model to some "trusted" U.S. organizations, partially reversing order. Politico reported the possible lifting of export controls earlier. The White House did not immediately respond to a request for comment. (Reporting by Alexandra Alper, Costas Pitas and Ismail Shakil; editing by Paul Thomasch)

US close to allowing Anthropic to restore Fable 5 model, Axios reports

June 27 (Reuters) - The Trump administration is close to allowing Anthropic to restore access to its Fable 5 model, Axios reported on Saturday, citing a source close to the situation. Reuters could not immediately confirm the report. Anthropic and the White House did not immediately respond to requests for comment. Anthropic had abruptly disabled its most advanced AI models -- Mythos 5 and Fable 5 -- for all users after the government's June 12 export control order. Insiders expect the administration's limits on Fable 5 could be lifted as soon as this coming week, the report said. Conversations between the parties are expected to continue over the weekend, and Anthropic expects to restore Fable access soon, the report added, citing a second source. Anthropic said on Friday that the U.S. government has allowed it to release its Claude Mythos 5 artificial intelligence model to some "trusted" U.S. organizations, partially reversing an order two weeks ago to suspend access over national security risks. The government is also moving towards allowing Anthropic to release Fable soon, although a timeline is unclear, a source familiar with the directive told Reuters. Both Fable 5 and Mythos use the same underlying AI model, but Fable 5 is designed to be widely available for public use whereas some safeguards are lifted for Mythos. (Reporting by Gnaneshwar Rajan in Bengaluru; Editing by Jan Harvey, Alexandra Hudson)

Fable 5 restored: Your guide to what Anthropic's flagship AI can and can't do

The most advanced anthropic public model is finally back up and running after being shut down globally by a US government export control order after just three weeks, less than a week after release. The Fable 5 model is now available on the Claude Platform, Claude.ai, Claude Code, and Claude Cowork. However, it's not as much of a wild west as it used to be back when it was launched since there has been a safety mechanism added in, as well as an alternative when it refuses your request, among other changes. Also read: OpenAI halves their inference cost but no one knows how The three-week blackout Anthropic had blocked access to Fable 5 and its sister Mythos 5 following an export control order issued by the US Commerce Department on June 12 after only three days of availability since both models went live on June 9. This was due to the finding of an Amazon team about a jailbreak which could circumvent the cybersecurity features of Fable 5, which were then reported to the relevant government agencies by Amazon's chief executive officer, Andy Jassy. Without a system in place for verifying the nationality of users, Anthropic could not afford a partial rollback and decided to shut down all access until the Commerce Department lifted the export control order on June 30. However, all services did not resume operation at the same pace. Fable 5 has resumed operation across the entire range of Claude Platform, Claude.ai, Claude Code and Claude Cowork. But Mythos 5, which has no safety classifiers, continues to be limited to around 100 select US organizations focusing on cybersecurity and infrastructure. What Fable 5 will actually say no to This is the section that the developer needs to pay attention to. Fable 5 now comes equipped with classifiers that have the ability to deny certain requests, which is not the case with Mythos 5. Anthropic has warned that most biological and cybersecurity-related questions have been found to be automatically diverted to Opus 4.8, since the capabilities of Fable 5 in these two domains are too advanced to be misused. Not only does the refusal not generate any error, but the API actually responds to it as a valid output and identifies the classifier as well. Also read: Anthropic Claude Science explained: An AI lab bench that lives inside your terminal The fallback net underneath it Retry logic is embedded within Anthropic's plumbing, instead of forcing developers to come up with something makeshift for their needs. There is an automatic server-side retry on the rejected call using another model, along with a few language versions of SDKs that allow developers to retry calls by themselves. This is basically a backup solution for all those workflows that were depending on Fable 5 knowing everything. What stayed exactly the same Pricing and data policy didn't move an inch through any of this. Fable 5 is still priced at $10 per million input tokens and $50 per million output tokens, and the mandatory 30-day data retention requirement remains in place, with no opt-out. Anthropic's own defence Did Anthropic fail on the front of safety? By its own admission, no. According to the company, their tests revealed that a number of less-competent models, such as Opus 4.8, GPT-5.5 and Kimi K2.7, were able to recognize the vulnerabilities revealed in the Amazon report, while some other models managed to duplicate the demonstration of the exploit. But one needs to note that this description comes from Anthropic itself and is not verified by any independent sources. Why this matters beyond one model Everything in this case started with the executive order issued by Trump on June 2 to develop a process for benchmarking and validating frontier models before they become publicly available. And if such a policy will become a norm in the future, the model launches will have a lot more negotiation and governmental approval in them. Right now, Fable 5 is available again, but with an added layer of safety.

Anthropic, OpenAI model restriction: AI juggernaut slowing down?

India's Pax Silica access rests on a handshake, not a guarantee Literally in a fortnight, first Anthropic then OpenAI, two of the world's leading AI companies had to postpone the launch of their latest frontier AI model - Fable 5 and Mythos 5 for Anthropic, GPT 5.6 for OpenAI. Why? The US government told them to do it. In the case of Anthropic, they had already launched Fable 5 and Mythos 5 for paying customers of Claude all over the world, before access was revoked on June 12th. Since Anthropic is a US company, the US Department of Commerce restricted the export of Fable 5 and Mythos 5 to worldwide users. Despite Anthropic's guardrails, the US govt still deemed Mythos and Fable 5's cyber capabilities a threat in the hands of potential adversaries. Within days of Anthropic's censure, the same fate befell OpenAI. On June 25th, the White House asked OpenAI to delay its GPT-5.6 launch in stages. As a result, the latest ChatGPT model debuted not paying customers worldwide - like every previous model launched by OpenAI - but only to a handful of government-vetted partners. OpenAI CEO Sam Altman told staff that with the US government's help they were "approving access customer by customer." This begs the questions, is the AI juggernaut finally slowing down? And despite its own selfish interest, is the US government indirectly pushing the pause button and curbing the enthusiasm of eager technologists at leading AI companies? And to what end? Capability gating, not a real safety pause According to pro-safety group Public First's Brad Carson, this is not a good precedent. It's a form of gatekeeping of cutting-edge capability of frontier tech which isn't really thought through. Also read: OpenAI unveils GPT 5.6 family of AI models, but you can't use them yet: Here is why What the US government is doing in its capacity to restrict Anthropic and OpenAI from releasing their latest AI models isn't grounded in formalised laws or regulation, the justification is too opaque and possibly illegal. The US government would argue in the contrary, pointing to how it's all part of Pax Silica - a US-led initiative that came into effect from December 2025 to secure semiconductor chips and frontier AI models. There's a philosophical argument to be made here in support of what's happening with Anthropic and OpenAI's situation. AI industry pioneers Geoffrey Hinton and Yoshua Bengio, along with 22 co-authors, have spent years trying to hit the pause button on reckless AI advancements - especially in response to worrying capabilities like what Mythos has demonstrated. Also read: Anthropic restores Claude Mythos 5 for select users: Full story in 5 points However, there's a flipside to this argument as well. Bengio warned how licensing and distribution restrictions of AI models could be detrimental. If only a handful of labs controlled the most powerful AI systems, Bengio argued, then the resulting concentration of power threatens democracy and financial markets. What's happening now is exactly what Hinton and Bengio warned against. That frontier AI models are restricted from a national security framing rather than safety governance driven by safety researchers having a voice at the table. Even Anthropic - the company being restricted - has argued that the standard being applied by the US government is bad for the tech industry, as it "would essentially halt all new model deployments." This has a direct impact on countries like India, and the Global South, for which access to frontier AI access has direct implications with improving productivity, efficiency, and undertaking population scale AI-enabled empowerment efforts. Despite being a Pax Silica signatory, India finds itself on the restricted list for frontier AI model access. It's what's propelling India's renewed push for Sovereign AI compute. Where digital services and sensitive citizen data can be hosted on indigenous, locally regulated clouds rather than relying exclusively on foreign-owned servers.