Pentagon adds ChatGPT to GenAI.mil as platform passes one million users

OpenAI joins the Department’s enterprise AI environment, bringing large language models to three million personnel as defense workflows shift toward AI integration.

The U.S. War Department has announced a partnership with OpenAI to integrate ChatGPT into its enterprise AI platform, GenAI.mil, expanding access to advanced large language models across the joint force.

The move follows GenAI.mil surpassing one million unique users within two months of deployment and signals a deeper institutional commitment to embedding generative AI into defense operations.

According to the Department, OpenAI’s models will be made available to all three million Department personnel through GenAI.mil, described as a secure, mission-ready AI environment spanning every Military Service. The integration is positioned as a step toward making frontier AI capabilities part of daily defense workflows.

On LinkedIn, Katrina Mulligan, Head of National Security Partnerships at OpenAI for Government, said: “ChatGPT is coming to our men and women in uniform! Today we announced that OpenAI is joining the Pentagon's joint enterprise AI platform, GenAI.mil.”

She added: “We have long believed that democratic countries must understand how, with the proper safeguards, AI can help protect people, deter adversaries, and prevent future conflict.”

Mulligan continued: “We’re building technology that will change the world—and it will also introduce new risks that governments will have to manage. We have a responsibility to help them do that, including by making ChatGPT available to the defense workforce on their internal networks.”

From pilot to platform infrastructure

The Department said GenAI.mil has recorded more than one million unique users since launch and maintained 100 percent uptime. Adoption now spans all Military Services, positioning the platform as what the Department calls its unified AI environment.

They say: “With adoption spanning every Military Service, GenAI has cemented itself as the Department's unified environment for secure, mission-ready AI capabilities.”

The Department also states that ChatGPT will be integrated to “enhance mission execution and readiness, delivering reliable capabilities to the joint force.”

GenAI.mil is described as a direct execution of the Department’s AI Acceleration Strategy and aligned with the White House AI Action Plan. The broader objective is to build what the Department calls an “AI-first enterprise,” supported by centralized infrastructure, training, and internal deployment on secure networks.

Training, safeguards, and workforce experimentation

The Department indicates that comprehensive training for all personnel will continue as the platform expands. The goal is to ensure AI tools are integrated into daily workflows rather than used in isolated pilot projects.

Mulligan said on LinkedIn: “Some of the best ideas about how AI can transform defense workflows will come from their exceptional workforce. Excited to see what they build!”

While the announcement focuses on operational tempo and decision support, it also acknowledges risk management. Mulligan notes that governments must manage the new risks introduced by AI and that proper safeguards are essential.

The integration places OpenAI alongside other enterprise technology providers supporting federal AI deployments. For the broader EdTech and workforce training ecosystem, the development reinforces how generative AI platforms are moving from experimental tools to institutional infrastructure within high-security environments.

As public sector agencies adopt large language models at scale, questions around governance, training, and secure deployment will increasingly intersect with education, skills development, and AI literacy across the workforce.

ETIH Innovation Awards 2026

The ETIH Innovation Awards 2026 are now open and recognize education technology organizations delivering measurable impact across K–12, higher education, and lifelong learning. The awards are open to entries from the UK, the Americas, and internationally, with submissions assessed on evidence of outcomes and real-world application.