OpenAI Wins Defense Contract After US Halts Anthropic Use

OpenAI has reached an agreement with the United States Department of Defense to deploy its artificial intelligence models on classified military networks. In a late post on X, OpenAI CEO Sam Altman said the company would provide its models inside the Pentagon’s “classified network,” and that the department showed “deep respect for safety” and a willingness to work within the company’s operating limits.

The announcement came hours after the White House ordered federal agencies to stop using technology from rival firm Anthropic. Defense Secretary Pete Hegseth labeled Anthropic a “Supply-Chain Risk to National Security,” a designation that requires defense contractors to certify they are not using the company’s models.

President Donald Trump directed every US federal agency to immediately halt use of Anthropic technology, with a six-month transition period for agencies already relying on its systems.

United States

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