Bringing ChatGPT to GenAI.mil

Today, OpenAI for Government is announcing the next phase of our national security work: bringing ChatGPT to GenAI.mil, the Department of War’s secure enterprise AI platform used by 3 million civilian and military personnel.

By joining the other frontier AI labs on GenAI.mil, we are building on our existing work with the Pentagon—including our collaboration with DARPA to help cyber defenders and the pilot program we announced earlier this year with the Department’s Chief Digital and Artificial Intelligence Office (CDAO) focused on how frontier AI can transform the Pentagon’s operations.

We believe the people responsible for defending the country should have access to the best tools available, and it is important for the United States and other democratic countries to understand how, with the proper safeguards, AI can help protect people, deter adversaries, and prevent future conflict. That’s why we’re bringing ChatGPT to GenAI.mil—to empower American service members with AI capabilities built to the highest standards, delivering reliable performance and mission advantage. Our goal is to help governments use AI effectively and safely. We believe we can best achieve that by participating in efforts like GenAI.mil, where we help shape the technical norms for how AI is deployed across government.

Deploying a custom ChatGPT product on GenAI.mil

OpenAI will deploy a custom version of ChatGPT on GenAI.mil, approved for the Department’s unclassified work. The system runs in authorized government cloud infrastructure with built-in safety controls and protections for the Department’s highly sensitive data, giving teams secure access to generative AI.

ChatGPT is designed to support day‑to‑day tasks that strengthen readiness and mission execution for American service members, including:

• Summarizing and analyzing policy and guidance documents
• Drafting and reviewing procurement and contracting materials
• Generating internal reports and compliance checklists
• Supporting a wide variety of research, planning, mission support, and administrative workflows

Securely built for the Department of War:

• The models deployed on GenAI.mil incorporate safeguards at the model and platform level to promote robustness and reliability within the embedded system itself, supporting all lawful uses.
• Data processed on GenAI.mil remains isolated to the government environment and is not used to train or improve OpenAI’s public or commercial models, ensuring separation from external systems and protecting mission data.

This effort reflects how we approach government work more broadly: focused, practical, safety-forward, and grounded in real-world use.