OpenAI deploys ChatGPT to Pentagon platform as experts warn of security and human error risks

'We believe the people responsible for defending the country should have access to the best tools available': OpenAI is giving the US military access to ChatGPT

OpenAI has agreed to provide the US military with ChatGPT after months of internal deliberation, marking a major advancement for the OpenAI for Government platform launched in July 2025. Rather than accessing the consumer-facing ChatGPT interface, the chatbot will be available through GenAI.mil, the Pentagon's secure AI platform, because the military's version of ChatGPT will be slightly different from others. Safeguards are incorporated at the model level, but the Pentagon's ChatGPT will be available for "all lawful uses," which means it should not be technically restricted. "We believe the people responsible for defending the country should have access to the best tools available," OpenAI wrote. "AI can help protect people, deter adversaries, and prevent future conflict." Although the initial rollout is only for the US military, OpenAI did hint at broader support for more governments in the future: "Our goal is to help governments use AI effectively and safely." In its first, US-only guise, ChatGPT will be slightly tweaked to handle the department's unclassified work, running in the government's cloud infrastructure. Apart from the obvious security measures, the military's version of ChatGPT can be used for all the usual reasons, such as summarizing, analyzing, drafting work, generating reports and more. OpenAI wasn't guaranteed the contract, as rival companies Google and xAI were also up for consideration, having accepted that "all lawful uses" clause. Anthropic had reportedly pushed back, wanting more control over how Claude could be used. In fact, it could be that Google and xAI tools might be adopted within GenAI.mil or more broadly across the Pentagon in other ways.

OpenAI Adds Custom ChatGPT to Pentagon Platform as Expert Warns of Risks - Decrypt

Critics warn that human error, and overtrust in AI systems risks remain. OpenAI said Monday it is deploying a custom version of ChatGPT on GenAI.mil, the AI platform developed by the U.S. Department of Defense. The move expands the military's access to powerful generative AI models, even as critics warn that user error remains a key security risk. ChatGPT joins a growing list of AI models made available to the U.S. military, including Google's Gemini and Grok, the AI system developed by xAI, which was folded into SpaceX earlier this month. "We believe the people responsible for defending the country should have access to the best tools available, and it is important for the U.S. and other democratic countries to understand how, with the proper safeguards, AI can help protect people, deter adversaries, and prevent future conflict," OpenAI said in a statement. OpenAI said the GenAI.mil version of ChatGPT is approved for unclassified Defense Department use and will run inside an authorized government cloud infrastructure. According to OpenAI, the system includes safeguards designed to protect sensitive data. Still, J.B. Branch, Big Tech Accountability Advocate at Public Citizen, warned that user overreliance on AI could undermine those protections. "Research shows that when people use these large language models, they tend to give them the benefit of the doubt," Branch told Decrypt. "So in high‑impact situations like the military, that makes it even more important to ensure they get things correct." The deployment comes as the Pentagon accelerates the adoption of commercial AI across military networks and as AI developers seek profitability. In January, Defense Secretary Pete Hegseth said the department plans to deploy leading AI models across both unclassified and classified military networks. While OpenAI said the custom version of ChatGPT is meant only for unclassified data, Branch warned that putting any sensitive information into AI systems leaves it vulnerable to adversaries, adding that users often mistake such tools for secure vaults. "Classified information is supposed to only have a certain set of eyes on it," he said. "So even if you have a cut‑off system that's only allowed within the military, that doesn't change the fact that classified data is only meant for a limited subset of people."

OpenAI opening ChatGPT access to Pentagon

OpenAI announced Monday that it is bringing a custom version of ChatGPT to the Pentagon's AI platform. It joins other major AI companies, including Google and Elon Musk's xAI, on the Defense Department's platform GenAI.mil. The custom ChatGPT will run on "authorized government cloud infrastructure with built-in safety controls and protections" and is approved for unclassified work, OpenAI said. "We believe the people responsible for defending the country should have access to the best tools available, and it is important for the United States and other democratic countries to understand how, with the proper safeguards, AI can help protect people, deter adversaries, and prevent future conflict," the company said in a press release. OpenAI previously received a contract for up to $200 million with the Defense Department's Chief Digital and Artificial Intelligence Office last July as the agency sought to boost its AI adoption. Anthropic, Google and xAI also scored similar contracts. Anthropic has reportedly clashed with the Pentagon in recent months over restrictions barring its AI model Claude from being used for domestic surveillance or autonomous lethal operations. OpenAI said in Monday's announcement that its models "incorporate safeguards at the model and platform level" and support "all lawful uses."