Pentagon develops AI alternatives as Anthropic legal battle escalates over national security concerns
45 Sources
[1]
The Pentagon is developing alternatives to Anthropic, report says
After their dramatic falling out, it doesn't seem as though Anthropic and the Pentagon are getting back together. Instead, the Pentagon is building tools to replace Anthropic's AI, according to a Bloomberg conversation with Cameron Stanley, the chief digital and AI officer at the Pentagon. "The
[2]
Justice Department Says Anthropic Can't Be Trusted With Warfighting Systems
The Trump administration argued in a court filing on Tuesday that it did not violate Anthropic's First Amendment rights by designating the AI developer a supply-chain risk and predicted that the company's lawsuit against the government will fail. "The First Amendment is not a license to
[3]
Trump Administration Vows Legal Fight on Anthropic AI Tool Ban
The Trump administration vowed a legal fight to oust Anthropic PBC from all US government agencies following a dispute over how the company's artificial intelligence technology would be used. "For national security reasons, the terms of service for plaintiff Anthropic PBC's artificial intelligence
[4]
Trump administration defends Anthropic blacklisting in US court
NEW YORK, March 17 (Reuters) - The Trump administration said in a Tuesday court filing that the Pentagon's blacklisting of Anthropic was justified and lawful, opposing the artificial intelligence lab's high-stakes lawsuit challenging the decision. Defense Secretary Pete Hegseth designated
[5]
Defense Department says Anthropic poses 'unacceptable risk' to national security
The Department of Defense said giving Anthropic continued access to its warfighting infrastructure would "introduce unacceptable risk" to its supply chains in a court filing submitted in response to the AI company's lawsuit. If you'll recall, Anthropic sued the government to challenge the supply
[6]
Sam Altman faced 'serious questions' in meeting with lawmakers about OpenAI's defense work
Oracle is building yesterday's data centers with tomorrow's debt Anthropic had been trying to renegotiate its contract with the DOD, but the talks stalled over a disagreement about how the technology could be used. The DOD wanted Anthropic to grant the military unfettered access to its models for
[7]
U.S. Says Anthropic Is an 'Unacceptable' National Security Risk
The U.S. government said on Tuesday that it had deemed the artificial intelligence company Anthropic an "unacceptable risk" to national security because the start-up could disable or alter its technology to suit its own interests, rather than the country's priorities, in a time of war. In a
[8]
Big Tech backs Anthropic in fight against Trump administration
A slew of America's biggest tech companies have swung behind Anthropic in its lawsuit against leaders in the Trump Administration. Since Monday, Google, Amazon, Apple and Microsoft have publicly supported Anthropic's legal action to overturn Defense Secretary Pete Hegseth's unprecedented decision
[9]
Pentagon Moving to Replace Anthropic Amid AI Feud, Official Says
The Pentagon is working to develop alternatives to Anthropic PBC's artificial intelligence tools, according to a senior US defense official, following a Trump administration decision to declare the company a supply-chain risk in a feud over safeguards governing military use of the
[10]
The Pentagon Claims That Anthropic's 'Soul' Creates a Supply-Chain Risk. That Makes No Sense
"Their model has a soul, a 'constitution'â€"not the US Constitution." Emil Michael, the Under Secretary of Defense for Research and Engineering, appeared on CNBC on Thursday, where he faced questions about the Pentagon's designation of Anthropic as a supply chain risk. Michael tried to make his
[11]
Microsoft's brief in Anthropic case shows new alliance and willingness to challenge Trump administration
A brief filed by Microsoft in Anthropic's lawsuit against the U.S. Department of War shows the deepening ties between the two companies, and Microsoft's willingness to take on the federal government at key moments in its history. Microsoft on Tuesday urged a federal judge in San Francisco to
[12]
Pentagon CTO says 'no chance' of renewed Anthropic negotiations
March 12 (Reuters) - Pentagon Chief Technology Officer Emil Michael on Thursday ruled out negotiations with Anthropic after the agency labeled the AI lab a supply-chain risk in a dispute over restrictions on how the U.S. military can use its technology. "There's no chance. The (Anthropic)
[13]
Anthropic seeks appeals court stay of Pentagon supply-chain risk designation
Dario Amodei, Anthropic's CEO, speaking on CNBC's "Squawk Box" outside the World Economic Forum in Davos, Switzerland, on Jan. 21, 2025. Anthropic on Wednesday sought a stay from a U.S. appeals court after the Pentagon said the company was a supply-chain risk, pending a judicial review of the
[14]
Microsoft Backs Anthropic in Pentagon Fallout Despite Heated Rivalry
Microsoft is taking Anthropic's side in its fight to overturn the Pentagon's "supply-chain risk" designation. Late last month, the Pentagon dropped all contracts with Anthropic and labeled the AI company a "supply-chain risk" after the latter refused to drop safeguards against mass surveillance
[15]
Tech companies aren't slowing relationships with Anthropic
Why it matters: The Trump administration tried to kneecap one of the world's most powerful AI companies. So far, it's just giving it a leg up. The big picture: Anthropic is raking in more revenue and attention than it did before President Trump and the Pentagon went after the company. * The
[16]
Anthropic-Pentagon battle shows how big tech has reversed course on AI and war
Less than a decade ago, Google employees scuttled any military use of its AI. Now Anthropic is fighting Trump officials not over if, but how The standoff between Anthropic and the Pentagon has forced the tech industry to once again grapple with the question of how its products are used for war -
[17]
How the Anthropic-Pentagon dispute over AI safeguards escalated
March 11 (Reuters) - A standoff erupted between the U.S. Department of Defense and Anthropic in January after the AI lab refused to loosen safety guardrails on its systems, prompting the Pentagon to label it a 'supply-chain risk,' and putting the company's government contracts in jeopardy. The
[18]
Palantir CEO Alex Karp says there was 'never a sense' AI products would be used for domestic surveillance in Anthropic-DoD feud | Fortune
Right in the middle of the ongoing feud between the Silicon Valley AI company Anthropic and the U.S. Department of Defense over whether the military will use -- or not use -- Anthropic's large language models is yet another company: Palantir. Palantir, the Miami-based data analytics and artificial
[19]
Anthropic's Claude would 'pollute' the Pentagon's supply chain: official
Anthropic CEO Dario Amodei (Krisztian Bocsi/Bloomberg via Getty Images) A high-ranking Pentagon official said Thursday that Anthropic's artificial intelligence models would "pollute" the military supply chain. Speaking on CNBC, Defense Department Chief Technology Officer Emil Michael said the
[20]
Microsoft says court should temporarily block Pentagon's blacklist of Anthropic
Microsoft CEO Satya Nadella attends the 56th annual World Economic Forum (WEF) meeting in Davos, Switzerland, January 20, 2026. Microsoft threw its support behind Anthropic on Tuesday and advocated for a temporary restraining order that would block the Pentagon's supply chain designation "for all
[21]
Microsoft Sides With Anthropic Against Trump Admin's Supply Chain Risk Designation - Decrypt
Microsoft argued the DoD used a foreign-adversary security designation in an "unprecedented" way. Microsoft has up to $5 billion invested in Anthropic, while Anthropic has committed to buy $30 billion in Azure compute under the partnership. That context makes its decision to file an amicus curiae
[22]
Anthropic sues Pentagon, Trump administration over "supply chain risk" designation
Stefan Becket is a managing editor of politics for CBSNews.com. Stefan has covered national politics for more than a decade and helps oversee a team covering the White House, Congress, the Supreme Court, immigration and federal law enforcement. Washington -- Anthropic sued the Defense Department
[23]
Who in tech is supporting Anthropic's AI fight with US government?
The Department of War labelled Anthropic a 'supply chain risk,' which means it can exclude them from bidding for contracts and refuse other companies from working with them. Microsoft, retired military leaders, and artificial intelligence (AI) think tanks are supporting Anthropic in its case to
[24]
Microsoft shows support for Anthropic's legal case against the US Department of Defense
Claude creator, Anthropic, has already had an eventful 2026 -- and now it's challenging the recently renamed US Department of War. The Pentagon has threatened to designate the company as a "supply chain risk," which Anthropic is currently fighting by suing the US government. Additionally on
[25]
Microsoft urges Pentagon pause blacklisting Anthropic
San Francisco (United States) (AFP) - Microsoft on Tuesday warned a judge that the Pentagon blacklisting of Anthropic could hamper US warfighters and imperil the country's drive to lead in artificial intelligence. In a brief, Microsoft backed Anthropic's request for an order stopping the Pentagon
[26]
Tech industry rallies behind Anthropic in Pentagon fight
Why it matters: The Pentagon didn't just stop doing business with Anthropic -- it labeled the company a supply chain risk, a move industry says could chill innovation and reshape how the government treats AI vendors. Driving the news: Major tech industry groups representing companies with Pentagon
[27]
The Pentagon-Anthropic clash is a warning for every enterprise AI buyer
Every so often, a "technical" dispute reveals something much bigger. The recent blowup between the U.S. Department of Defense and Anthropic is one of those moments: not because it's about a $200 million contract, but because it makes visible a new kind of enterprise risk, one that most CEOs, CTOs,
[28]
Anthropic just sued the Pentagon. The outcome could reshape the AI race with China | Fortune
Anthropic has now filed two lawsuits against the Department of Defense. What happens next could matter far more than either side is letting on. Supposedly, Anthropic refused to give the Pentagon unrestricted access to Claude, its frontier AI model, the only one currently running on classified
[29]
Exclusive: Anduril's Luckey says Pentagon could have been "more forceful" against Anthropic
Why it matters: The Pentagon's designation of Anthropic as a supply chain risk is a move historically reserved for foreign adversaries. It means that other companies who do business with the Pentagon may have to cut ties with the AI giant. * This puts hundreds of companies that do business with
[30]
Anthropic requests emergency stay of supply chain risk designation in DC appeals case
Anthropic has filed a request for an emergency stay on the Pentagon's designation of its products as a supply chain risk, arguing Defense Secretary Pete Hegseth's decision will "inflict escalating and irreparable harm" for the company. Lawyers for Anthropic argued in a Wednesday filing that the
[31]
Microsoft Just Backed Anthropic's Fight Against the Pentagon -- and Issued a Stark Warning to the Department of War
In an amicus brief shared with The Hill on Tuesday, Microsoft urged a federal judge to temporarily block the designation while the courts review the dispute. The company warned that forcing contractors to immediately cut ties with Anthropic could disrupt existing AI systems used by the U.S.
[32]
Microsoft Backs Anthropic, Urging a Judge to Halt Pentagon's Actions Against AI Company
SAN FRANCISCO (AP) -- Microsoft is throwing its weight behind Anthropic in asking a federal court to block the Trump administration's designation of the artificial intelligence company as a supply chain risk. Microsoft, in a legal filing, is challenging Defense Secretary Pete Hegseth's action last
[33]
Anthropic's Pentagon showdown is drawing Silicon Valley into a larger fight
The dispute between Anthropic and the Department of Defense is quickly becoming a broader test of how far the government can go in policing AI companies' policies -- and how much support those companies can rally from the wider research community. A fair showing of top AI researchers had already
[34]
Trump administration defends Anthropic blacklisting in US court
Defense Secretary Pete Hegseth designated Anthropic, the maker of popular AI assistant Claude, a national security supply chain risk on March 3 after the company refused to remove guardrails against its technology being used for autonomous weapons or domestic surveillance. The Trump
[35]
Defense Dept. Claims Anthropic Would 'Pollute' Pentagon Supply Chain
Defense Dept. Claims Anthropic Would 'Pollute' Pentagon Supply Chain In an argument that effectively boils down to "you didn't break up with me, I broke up with you," Defense Department CTO Emil Michael told CNBC the Pentagon decided not to use Anthropic -- and ordered DOD suppliers to cease using
[36]
Microsoft files amicus brief supporting Anthropic in Pentagon fight
The technology giant Microsoft has filed an amicus brief in Anthropic's case against the Trump administration, urging the court to temporarily block the implementation of the Pentagon labelling the Claude-maker as a supply chain risk. The filing is a significant development for Anthropic, which
[37]
Palantir uses Anthropic's Claude despite Pentagon's 'supply chain risk' tag: CEO Alex Karp - The Economic Times
Palantir Technologies CEO Alex Karp has said the company still relies on AI models from Anthropic, despite the US Department of War (DoW) recently classifying the firm as a 'supply chain risk', according to a report by CNBC. "The Department of War is planning to phase out Anthropic; currently,
[38]
Microsoft Backs Anthropic Against Pentagon Ban | PYMNTS.com
By completing this form, you agree to receive marketing communications from PYMNTS and to the sharing of your information with our sponsor, if applicable, in accordance with our Privacy Policy and Terms and Conditions. The tech giant's comments were delivered in its motion for a proposed amicus
[39]
Pentagon CTO Emil Michael reveals why Anthropic was labelled a 'supply-chain risk' - The Economic Times
The US Defense Department's chief technology officer, Emil Michael, has explained for the first time why the government considers AI models from Anthropic -- particularly its Claude system -- to be a national security concern. Speaking on Squawk Box on CNBC, Michael said the issue lies in the
[40]
Exclusive | Pentagon AI chief Emil Michael says it's 'totally bananas' that...
Pentagon AI chief Emil Michael isn't sweating Microsoft's legal support for Anthropic. In fact, he told me the whole situation is "totally bananas." Michael dismissed Microsoft's amicus brief, which the company filed earlier this week in support of Anthropic and against the Department of War, as
[41]
How the Anthropic-Pentagon dispute over AI safeguards escalated
A dispute erupted after Anthropic refused to loosen AI safety safeguards for the Pentagon. The U.S. Defense Department labelled the Claude maker a "supply-chain risk", threatening government contracts. Anthropic plans a court challenge, warning the move could cut billions from 2026 revenue, while
[42]
Anthropic would 'pollute' US military supply chain, Pentagon official...
The Pentagon cut ties with Anthropic because use of its artificial intelligence models would "pollute" the US military's supply chain, a top War Department official claimed Thursday. Emil Michael, the War Department's chief technology officer, said Anthropic's Claude AI chatbot was trained using a
[43]
Microsoft files amicus brief in support of Anthropic's lawsuit with US DOD - The Economic Times
Microsoft filed a proposed brief supporting Anthropic's lawsuit seeking to temporarily block the US Department of Defense designation of the AI startup as a supply-chain risk. The company said the decision directly affects it and could cause costly disruptions for suppliers relying on Anthropic's
[44]
Pentagon Deems Anthropic's Claude AI a Supply Chain Risk
The US Department of Defense now requires its suppliers to certify that they do not use the start-up's models. The US Department of Defense's Chief Technology Officer, Emil Michael, stated that the Claude artificial intelligence models developed by Anthropic represent a potential risk to the
[45]
Microsoft backs Anthropic in amicus brief to halt US DOD's 'supply-chain risk' designation
March 10 (Reuters) - Microsoft filed on Tuesday a brief in support of Anthropic's lawsuit asking the court to temporarily block the U.S. Department of Defense's designation of the AI startup as a supply-chain risk. In an amicus brief filing in a federal court in San Francisco, Microsoft backed
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The Pentagon is actively building alternatives to replace Anthropic's AI technology after their $200 million contract collapsed over usage restrictions. Defense Secretary Pete Hegseth designated Anthropic a supply chain risk, typically reserved for foreign adversaries, while the Trump administration defends the decision in court as a matter of national security.
Pentagon Moves Forward With AI Alternatives to Anthropic
The Pentagon is actively developing alternatives to Anthropic's technology following the dramatic collapse of their relationship, signaling that reconciliation appears unlikely. Cameron Stanley, the chief digital and AI officer at the Pentagon, confirmed to Bloomberg that engineering work has already begun on multiple Large Language Models for government-owned environments, with operational deployment expected soon
3
. The Department of Defense is working to deploy AI systems from Google, OpenAI, and xAI as replacements for Claude AI2
. This shift comes after Anthropic's $200 million contract with the Department of Defense broke down over disagreements about AI technology restrictions, specifically regarding autonomous weapons and surveillance applications1
.Supply Chain Risk Designation Sparks Intense Legal Battle
Defense Secretary Pete Hegseth designated Anthropic a supply chain risk on March 3, a label typically reserved for foreign adversaries that effectively bars companies working with the Pentagon from partnering with Anthropic
1
. President Donald Trump backed this decision, directing all federal agencies to terminate their business relationships with the AI company4
. Anthropic has filed lawsuits in both California federal court and a Washington, D.C. appeals court, challenging what it calls an "unprecedented and unlawful" designation that violates its First Amendment rights and due process protections4
. The company argues the government ban could cost it billions of dollars in lost revenue this year and is seeking a preliminary injunction to block the designation while litigation proceeds2
.Government Defends National Security Risk Classification
In a court filing submitted Tuesday, the Department of Justice argued that Anthropic's concerns about losing business are "legally insufficient to constitute irreparable injury" and defended the government's actions as necessary for national security
2
. The Trump administration asserted that the dispute stems from contract negotiations rather than retaliation against protected speech, stating that "no one has purported to restrict Anthropic's expressive activity"4
. Pentagon officials expressed concerns that Anthropic staff "might sabotage, maliciously introduce unwanted function, or otherwise subvert the design, integrity, or operation of a national security system"2
. The government's court filing emphasized that AI systems are "acutely vulnerable to manipulation" and that Anthropic could attempt to disable its technology during ongoing warfighting operations if the company felt its ethical red lines were being crossed5
.Related Stories
Contract Negotiations Breakdown Over Usage Restrictions
The conflict originated when Pete Hegseth incorporated a provision into AI service contracts allowing the Pentagon to use technologies for any lawful purpose without restrictions. Anthropic refused to accept these terms, insisting on contractual clauses prohibiting the use of its AI for mass surveillance of Americans and fully autonomous weapons deployment
1
. The company maintains that AI is not yet safe enough for autonomous weapons applications and opposes domestic surveillance as a matter of principle4
. During negotiations in early 2026, Anthropic's behavior caused the department to question whether it represented a trusted partner for highly sensitive military contracts3
. The Pentagon became concerned that allowing Anthropic continued access to warfighting systems would introduce unacceptable risk to supply chains5
.Industry Support and Transition Timeline
Microsoft, Google, OpenAI, AI researchers, a federal employee labor union, and former military leaders have filed court briefs supporting Anthropic's position, with no briefs filed in support of the government
2
. Despite this backing, Hegseth announced the military would continue using Anthropic's technology for no more than six months to allow for a seamless transition to what he called "a better and more patriotic service"3
. One of the military's top uses of Claude AI has been through Palantir data analysis software2
. A hearing is scheduled for next Tuesday in San Francisco federal court to decide whether to grant Anthropic's request for an injunction, with the company required to file a counter response to the government's arguments by Friday2
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