Pentagon Expands GenAI.mil as AI Drafts Reports for Congress

The Pentagon is rapidly expanding its use of generative AI across the Department of Defense, with officials saying adoption of the GenAI.mil platform has surged from about 80,000 users in late 2025 to roughly 1.5 million by June 2026, out of a workforce of around 3.5 million. Defense officials said the platform is already being used for administrative work including evaluation reports, medal citations, counseling statements, and reports mandated by Congress, while the department has also signed agreements with major AI vendors to deploy tools on classified networks for lawful operational use.

OpenAI said ChatGPT will be added to GenAI.mil in early July for more than 3 million civilian and military personnel, with certifications for controlled unclassified information and Impact Level 5. The expansion has drawn scrutiny because AI-generated submissions to Congress could contain errors or mischaracterizations that weaken oversight of military spending, particularly as the Defense Department seeks a record $1.5 trillion budget for fiscal year 2027; officials also noted that more than 100,000 AI agents have already been built on the platform as demand grows for higher token capacity and more efficient model use.