AUGUST 31, 2026 – The Department of War today launched OpenAI’s ChatGPT Mil, marking it as the next frontier AI capability housed on GenAI.mil, the Department’s premier generative AI platform. This milestone represents the adoption phase of an enterprise partnership established between the Department and OpenAI in 2025. Accredited for Controlled Unclassified Information (CUI) at Impact Level 5 (IL5), ChatGPT Mil is engineered for secure, consistent enterprise use.
ChatGPT Mil brings a familiar commercial experience into the Department’s secure environment, tailored to warfighter needs. The core experience centers on chat, files, projects, and custom GPTs, with additional features sequenced over time. ChatGPT Mil supports document-heavy unclassified work across the Department, including planning, policy, logistics, and administration, and is built for scale to support more than 3 million Department personnel. This deployment accelerates routine tasks and frees up time for more critical projects across the Joint Force. Integrating ChatGPT Mil into GenAI.mil alongside existing frontier AI capabilities establishes a robust, multi-model ecosystem for the warfighter.
The Department of War today also launched Starshield AI’s Grok for Government, expanding the suite of frontier AI capabilities on GenAI.mil.
Starshield AI’s Grok for Government will provide the warfighter with immediate productivity gains, stronger knowledge continuity and more secure and efficient collaboration. By bringing Starshield AI’s Grok to GenAI.mil, Department personnel will gain access to advanced capabilities, including deep-thinking inference, adaptive reasoning modes (Auto, Fast, and Expert), customizable workspaces, persistent projects and reusable “playbooks” that capture and scale 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.
These deployments mark another major milestone in the Department’s AI Acceleration Strategy and advances one of its core tenets, enterprise AI applications. Since its launch nine months ago, GenAI.mil has already onboarded over 1.7 million unique users out of the Department’s more than 3 million personnel. The addition of Starshield AI’s Grok for Government to GenAI.mil provides another top-tier generative AI tool for warfighter advantage, eliminating vendor lock and promoting a vibrant American AI ecosystem.
Through the Chief Digital and AI Office (CDAO) and the Office of the Under Secretary of War for Research and Engineering, the Department will continue to scale frontier AI as a force multiplier across the Joint Force. This launch supports the White House’s AI Action Plan and reinforces the Department of War’s commitment to leading the adoption of AI for warfighter mission sets and decision superiority.