The Pentagon now has its own version of ChatGPT and Grok

The Pentagon has officially launched tailored versions of OpenAI’s ChatGPT and xAI’s Grok for its 3 million civilian and military personnel. The move significantly expands the availability of powerful generative AI tools within the U.S. Department of Defense through a centralized portal, aiming to accelerate work and maintain a technological advantage without compromising data security. These deployments, named ChatGPT Mil and Grok for Government, represent a critical step in integrating commercial frontier models into sensitive government and military workflows.

The new tools are accessible via GenAI.mil, a secure platform launched last year that already offered Google Gemini and has onboarded over 1.7 million unique users. The portal is designed specifically to prevent sensitive government data from being processed through standard consumer channels and is exempt from the data collection practices common in commercial products. The two models are positioned for distinct use cases within the department.

Platform Offerings

• ChatGPT Mil: An extension of the OpenAI for Government program, this tool will focus on unclassified, document-heavy work such as administrative tasks, logistics, planning, and policy creation. It will support chat, files, and custom GPTs.
• Grok for Government: Provided by SpaceX’s Starshield AI, this model is framed for more direct operational support, intended to help military personnel “execute missions faster and with greater precision” in areas like market research and supply-chain management.

This expansion highlights the Pentagon's strategy of working with a diverse set of AI leaders, which also includes Amazon Web Services, Microsoft, and Nvidia. However, the vendor list also draws attention to the notable absence of Anthropic’s Claude model. The omission stems from an ongoing dispute where Anthropic insisted on safety guardrails for its technology, leading a prior administration to label the company a supply-chain risk—a designation it is currently fighting in court. This dynamic shows how the Department of Defense is navigating partnerships with AI labs that have differing views on the military application of their technology.

The Pentagon's dual adoption of OpenAI and xAI signals a clear strategy to leverage diverse commercial AI capabilities, while using procurement decisions to enforce its own terms on security and control—as evidenced by the conspicuous exclusion of Anthropic.