Overview
- The Defense Department added OpenAI’s ChatGPT Mil and Starshield AI’s Grok for Government to GenAI.mil on Monday, Aug. 31, 2026, creating a multi‑model portal that now includes Google’s Gemini.
- Both new models carry Impact Level 5 accreditation, which permits handling of Controlled Unclassified Information—sensitive but unclassified material that must be kept in guarded government cloud environments.
- The Pentagon says the tools are intended for document‑heavy, unclassified tasks such as planning, logistics, policy and administration and that ChatGPT Mil offers chat, files, projects and custom GPTs while Grok provides adaptive reasoning modes and reusable playbooks.
- GenAI.mil has attracted roughly 1.7 million unique users so far and officials and vendors report contractual and technical safeguards that isolate data processed on the platform from public commercial models.
- Anthropic’s Claude remains excluded after the department previously designated the company a supply‑chain risk and a federal judge recently struck down that designation, leaving unresolved legal and policy questions about vendor limits and the move to develop classified warfighting AI on separate networks.