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[ARTICLE · art-119082] src=the-decoder.com ↗ pub= topic=artificial-intelligence verified=true sentiment=· neutral

US military adds ChatGPT and Grok to AI platform GenAI.mil

The U.S. Department of Defense has added OpenAI's ChatGPT Mil and xAI's Grok for Government to its GenAI.mil platform, which now serves more than 1.7 million users. The models operate in a secure environment separate from commercial versions, with no user data collection. Anthropic's Claude remains absent after the company refused unrestricted use and was deemed a supply chain risk, a classification a court ruled unlawful in late August.

read1 min views1 publishedSep 2, 2026
US military adds ChatGPT and Grok to AI platform GenAI.mil
Image: The Decoder

The Pentagon is expanding its AI platform with two new models, OpenAI's ChatGPT Mil and xAI's Grok for Government. Until now, only Google Gemini had been available on GenAI.mil since its launch last December.

The Department of Defense says the platform has more than 1.7 million users among its over three million employees and military personnel. ChatGPT Mil is aimed mainly at administrative tasks, logistics, and planning. The Pentagon pitches Grok in more military-flavored terms, citing procurement analysis and supply chain management as use cases.

Both tools run in a dedicated secure environment, walled off from their commercial versions so no sensitive government data leaks out. No user data is collected either.

Anthropic's Claude is still missing from the platform. The company refused to grant the Pentagon unrestricted use and was classified as a supply chain risk by the Trump administration. A court ruled that classification unlawful in late August.

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