OpenAI will deploy a customized ChatGPT model on the Pentagon’s GenAI.mil platform for unclassified Defense Department work. The company stated the system runs on a secure government cloud with safeguards to keep military data separate from its public models. The move expands military access to leading AI, but critics warn human error and overtrust in such tools remain significant risks.
OpenAI announced it is deploying a custom version of ChatGPT on GenAI.mil, the U.S. Department of Defense’s AI platform. The company made the announcement in a statement on its website.
The system is approved for unclassified Defense Department use and will run inside an authorized government cloud infrastructure. OpenAI stated it includes safeguards designed to protect sensitive data.
“We believe the people responsible for defending the country should have access to the best tools available,” OpenAI said in a statement. The model joins other AI systems available to the military, including Google’s Gemini and xAI’s Grok.
Critics warn that user overreliance on AI could undermine built-in protections. J.B. Branch, Big Tech Accountability Advocate at Public Citizen, highlighted the risk of human error.
“Research shows that when people use these large language models, they tend to give them the benefit of the doubt,” Branch told Decrypt. He cautioned that this overtrust is especially dangerous in high-impact military situations.
Branch further warned that inputting any sensitive information into AI systems leaves it vulnerable. He noted that users often mistakenly treat such tools as secure vaults.
The deployment comes as the Pentagon accelerates its adoption of commercial AI. Defense Secretary Pete Hegseth has said the department plans to deploy leading AI models across both unclassified and classified networks.

