Pentagon Expands Military AI Access With ChatGPT Mil and Grok

Pentagon Expands Military AI Access With ChatGPT Mil and Grok

The Pentagon on Monday added ChatGPT Mil and Grok for Government to GenAI.mil, expanding the military’s internal AI platform beyond Google Gemini for unclassified work. The new tools will be available across the Defense Department for tasks including planning, logistics, policy, administration, acquisition research and supply chain management.

GenAI.mil launched last December as a centralized platform for commercial AI products and initially offered only Gemini for Government. The Defense Department says more than 1.7 million users have joined the platform, which is intended to serve a workforce of more than 3 million military and civilian personnel.

ChatGPT Mil, developed through OpenAI’s government program, is aimed largely at document-intensive work. The Pentagon said it will support planning, policy, logistics and administrative tasks while being designed to operate at department-wide scale. The tool will offer features familiar from commercial ChatGPT, including chat, file handling, projects and custom GPTs, with additional capabilities expected over time.

Grok for Government is being positioned more broadly across military and operational workflows. The Pentagon said the system will offer deep-thinking inference, multiple reasoning modes, customizable workspaces, persistent projects and reusable playbooks designed to preserve institutional knowledge. “Starshield AI’s Grok for Government enables the Joint Force to execute missions faster and with greater precision across numerous operational contexts, ranging from market research analysis for acquisition professionals to supply chain management for logisticians,” the department said. The Pentagon also said Grok would provide “immediate productivity gains, stronger knowledge continuity and more secure and efficient collaboration.”

The additions build on earlier agreements involving OpenAI and Elon Musk’s AI operations for classified environments. The department has also struck AI-related deals with companies including Amazon Web Services, Microsoft, Nvidia and Reflection AI. At the same time, Anthropic remains notably absent from GenAI.mil following a dispute with the Pentagon over restrictions on the use of Claude.

The Defense Department moved in February to designate Anthropic as a national security supply chain risk after the company sought assurances that Claude would not be used for fully autonomous weapons or mass surveillance. A federal judge last week struck down that designation, calling the department’s actions “illegal and baseless.” Even after that ruling, Pentagon Chief Technology Officer Emil Michael said the department expects to finish removing Anthropic’s platforms by the end of September.

Grok, meanwhile, has already been used in military contexts despite recurring scrutiny over the model’s safety and reliability. Pentagon Chief Digital and AI Officer Cameron Stanley said in a court filing earlier this year that Grok helped U.S. forces deploy more than 2,000 munitions against 2,000 targets within 96 hours during the Iran war.

The model is also available to civilian federal agencies through a General Services Administration agreement that allows agencies to purchase access for 42 cents through March 2027.

With ChatGPT Mil and Grok for Government now joining Gemini, GenAI.mil is moving toward a multi-model approach in which Defense Department personnel can use different commercial AI systems for routine unclassified work while keeping those interactions inside a government-focused environment.

This analysis is based on reporting from The Hill.

Image courtesy of digwatch.

This article was generated with AI assistance and reviewed for accuracy and quality.

Updated Aug 31, 2026

About this article: This article was generated with AI assistance and reviewed by our editorial team to ensure it follows our editorial standards for accuracy and independence. We maintain strict fact-checking protocols and cite all sources.

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