OpenAI has secured a deal with the U.S. Department of Defense to deploy its AI models on classified military networks. This development followed shortly after the White House ordered all federal agencies to cease using technology from rival Anthropic, which was designated a national security supply-chain risk. The contrasting outcomes highlight a pivotal moment in the relationship between government and leading AI firms.
OpenAI CEO Sam Altman announced the agreement in a late Friday post. He stated the company would provide its models inside the Pentagon’s “classified network.” Altman wrote that the department showed “deep respect for safety” and a willingness to work within the company’s operating limits.
Earlier that same day, Defense Secretary Pete Hegseth labeled Anthropic a “Supply-Chain Risk to National Security.” This ruling requires defense contractors to certify they are not using the company’s models. President Donald Trump simultaneously directed every federal agency to halt use of Anthropic technology.
Anthropic had been the first AI lab to deploy models across the Pentagon’s classified environment under a $200 million contract. Negotiations collapsed after the company sought guarantees its software would not be used for autonomous weapons or domestic mass surveillance. The Defense Department insisted the technology be available for all lawful military purposes.
In a statement, Anthropic said it was “deeply saddened” by the designation and intends to challenge the decision in court. Altman stated OpenAI maintains similar restrictions, prohibiting domestic mass surveillance and requiring human responsibility for force-related decisions. These limits were written into the new agreement with the Pentagon.
Some users on X voiced skepticism following the OpenAI deal announcement. American Democratic politician Christopher Hale wrote, “I just canceled ChatGPT and bought Claude Pro Max.” One crypto user also commented on the perceived shift in OpenAI’s stance regarding military contracts.

