The Pentagon Clears Grok and ChatGPT for Desk Work

The Department of War put Grok for Government and ChatGPT Mil on the Pentagon’s GenAI.mil portal on Aug. 31. Both chatbots are cleared for controlled unclassified information at Impact Level 5, the same bar Google’s Gemini has held since the site opened in December. They join a portal that already lists over 1.7 million unique users out of more than 3 million department staff.

The jobs in the two releases are supply-chain work, buying research, planning, logistics, policy, and administration.

The Approved Chatbots Are for Logistics and Forms

Starshield AI delivered Grok for Government, the Grok model wrapped in the name on the department contract. OpenAI delivered ChatGPT Mil as the next step of a 2025 enterprise deal. Each product is cleared for CUI at IL5 and described as built for steady department-wide use.

The Grok release talks about warfighters, missions, and speed. Then it names the work: market research for people who buy things, and supply chains for logisticians. The ChatGPT release is plainer. It promises a familiar chat screen inside the department’s secure network, built for scale, with extra features still to come.

ChatGPT Mil is aimed at document-heavy unclassified work across the department, including planning, policy, logistics, and administration. The core screen is chat, files, projects, and custom GPTs. A department official said Gemini is useful for search, while ChatGPT is the better fit for text.

THE JOBS THE DEPARTMENT LISTED

• Buying research: Grok for Government is offered for market analysis that acquisition staff already do by hand.
• Supply chains: The same tool is pitched to logisticians who move parts, fuel, and food.
• Planning and policy: ChatGPT Mil is cleared to draft and sort the unclassified paper that fills staff offices.
• Logistics and admin: Travel, contracting replies, and other repeatable office workflows sit in the ChatGPT column.

That list is office tempo, not a targeting stack. The department says faster routine work leaves time for harder tasks across the Joint Force, which is a staffing claim, not a new weapon.

DCSA Called Consumer Chatbots a Leak Path

In June the Defense Counterintelligence and Security Agency warned that unofficial “shadow AI” could spill data and open other security holes. The agency split the problem in two: people pasting work into outside commercial or private models, and AI features already sitting inside government networks that had not been fully checked.

When bypassing traditional security controls, both vectors create a massive, unmonitored attack surface where new risks outpace current technical safeguards and governance.

Defense Counterintelligence and Security Agency, June assessment

Grok and ChatGPT are the same family of products that warning had in mind, now running behind department rails instead of a personal account. Staff who already used the public apps at home get a version that is allowed to touch CUI. The consumer habit does not disappear. It gets a badge and a login.

The portal still does not take classified files. IL5 is the top unclassified cloud tier in the department’s model, one step below the networks that hold secrets. A sanctioned chatbot can close the easy leak of dumping a CUI memo into a public prompt. It cannot make a frontier model safe for every job a staff officer might want to try.

1.7 Million Were Already on Gemini

GenAI.mil opened on Dec. 9, 2025, with Gemini for Government. Secretary of War Pete Hegseth emailed the workforce that day and told them the tool was live on desktops for military members, civilians, and contractors.

I expect every member of the department to log in, learn it and incorporate it into your workflows immediately. AI should be in your battle rhythm every single day; it should be your teammate. By mastering this tool, we will outpace our adversaries.

Pete Hegseth, Secretary of War, in a message to the workforce

The Grok and ChatGPT launches did not create that audience. They arrived after Gemini had already done the hard part, which was getting people to open the site. Emil Michael, the department’s chief technology officer, said in June that daily use had reached 1.5 million people once Gemini was on unclassified networks, up from about 80,000 in December.

THE GENAI.MIL BUILD-OUT

1. Dec. 9, 2025: GenAI.mil opens with Gemini for Government, cleared for IL5 CUI.
2. Feb. 9, 2026: The department announces an OpenAI partnership to put ChatGPT on the portal, then past one million unique users with 100% uptime since launch.
3. June 2026: DCSA warns about unofficial commercial models, while Michael puts daily use at 1.5 million people.
4. Aug. 31, 2026: ChatGPT Mil and Grok for Government go live at IL5 beside Gemini.

A Sept. 1 department recap said the point of a third and second model is a first, second, and third opinion on the same file. Live and on-demand training is posted for each tool at no cost. Hegseth’s original order still stands: log in and use it.

What Impact Level 5 Lets Them Touch

Impact Level 5 is the department’s cloud bar for higher-sensitivity controlled unclassified information and for some unclassified national security data, sitting above ordinary CUI and below classified networks. ChatGPT Mil, Grok for Government, and Gemini are cleared to that bar and no higher on this portal.

The Defense Information Systems Agency writes the Cloud Computing Security Requirements Guide that sets those tiers. Microsoft’s summary of the guide says IL5 covers CUI that needs more protection than IL4, plus certain national security systems. A FedRAMP High authorization is the floor, with extra department controls on top, including 10 added control enhancements for an IL5 provisional authorization.

WHERE THESE CHATBOTS MAY RUN

For IL5, the guide also wants physical separation from public, local, and state tenants, and it limits potential access at the vendor to U.S. citizens. Virtual split is enough between department and other federal tenants. That is a housing rule for the computers, not a claim about model quality.

CUI is still unclassified. It is data a law or policy says must be handled with extra care, which is why a public ChatGPT window was the problem DCSA named in June.

Grok Gets Playbooks, ChatGPT Gets the Files

The two new tools are not clones. Grok is sold as a reasoning kit with saved workrooms. ChatGPT is sold as the app millions of people already know how to type into.

THE THREE CHATBOTS ON THE PORTAL

Playbooks are the Grok hook: saved ways of working that the department says can hold what an office already knows and pass it on. ChatGPT’s hook is custom GPTs and files, which is the same pattern OpenAI sells to companies, now inside the fence. Joe Larson, who leads OpenAI’s government sales, said ChatGPT on GenAI.mil will make unclassified work more efficient so staff can focus on the mission, with human judgment still required on high-stakes calls.

The Chief Digital and AI Office posted the ChatGPT Mil go-live the same day, calling general availability open on defense-secure rails.

General Availability is officially UNLEASHED. OpenAI's ChatGPT Mil is now live on https://t.co/gZ7awGycFo, giving our Joint Force access to the world’s most advanced collaborative AI workflows, built on defense-secure rails. 👇 pic.twitter.com/uRVpbVBjDt

— DoW Chief Digital & AI Office (@CDAODoW) August 31, 2026

The Grok write-up is the one that states the industrial goal in one clause, eliminating vendor lock on GenAI.mil and backing a wider American AI market. Three vendors on one unclassified portal is the method. A staff officer can run the same prompt through Gemini, ChatGPT, and Grok and keep the answer that survives the comparison.

Starshield AI is the name the department used, not xAI. Grok is still the public model people know from Elon Musk’s lab, delivered here through the military-facing brand on the paperwork.

Claude Is the Model That Did Not Make the Cut

Anthropic’s Claude is not one of the three chatbots on GenAI.mil. The empty chair is the leftover from a public fight over how far a vendor can limit military use. Hegseth designated Anthropic a supply-chain risk, and the company has taken that fight to court. Google, OpenAI, and Starshield AI took the unclassified seats instead.

Classified work is a different stack. In May the department said eight firms, SpaceX, OpenAI, Google, NVIDIA, Reflection, Microsoft, Amazon Web Services, and Oracle, could put models on networks at Impact Levels 6 and 7. That list is not this launch. ChatGPT Mil and Grok for Government, as announced on Aug. 31, are IL5 products on GenAI.mil.

Hegseth already told the force to make AI a daily teammate. The new choice is which of three chatbots a staff officer opens for a given unclassified file, on a portal that still cannot hold secrets.

Frequently Asked Questions

What Is ChatGPT Mil?

ChatGPT Mil is OpenAI’s department build of ChatGPT, cleared at IL5 for CUI and described as the adoption phase of a 2025 enterprise partnership. Extra features are scheduled after the first wave of chat, files, projects, and custom GPTs, so the product on day one is not the full commercial menu.

What Is Grok for Government?

Grok for Government is Starshield AI’s IL5 build of Grok on GenAI.mil, with Auto, Fast, and Expert reasoning modes plus reusable playbooks meant to store office methods. The department tied it to the AI Acceleration Strategy’s enterprise-apps goal, not to a named combat program in the Aug. 31 release.

Can GenAI.mil Hold Classified Information?

No. These three chatbots are cleared for IL5 CUI only. Classified data sits on separate networks at Impact Levels 6 and 7, where the department said in May that eight firms, including OpenAI, SpaceX, Google, Microsoft, Amazon, Oracle, NVIDIA, and Reflection, may deploy models under different rules.

Who Can Use the Pentagon’s GenAI.mil Portal?

Hegseth opened it to military members, civilians, and contractors on official desktops, not to the public. The Sept. 1 recap said live and on-demand training for each chatbot is available at no cost to department employees.

What Is Controlled Unclassified Information?

CUI is unclassified data that a law, regulation, or government-wide policy says must still be safeguarded, catalogued in the CUI categories the executive branch protects, with more than 20 groupings on the registry. Contractor systems that hold it are also pointed to NIST SP 800-171, which is a separate rule from the department’s IL5 cloud bar.