The standoff between the Trump administration and Anthropic is over.
President Donald Trump has ordered every federal agency to cease using Anthropic’s technology, triggering a six-month phase-out and effectively ending the company’s role in classified military systems. Within hours, OpenAI announced it had reached an agreement with the Department of War to deploy its models in the government’s classified network.
The fight that had been building all week ended with a replacement.
In a statement posted Friday afternoon, Trump made the break explicit:
“I am directing EVERY Federal Agency in the United States Government to IMMEDIATELY CEASE all use of Anthropic’s technology. We don’t need it, we don’t want it, and will not do business with them again! There will be a Six Month phase out period for Agencies like the Department of War who are using Anthropic’s products, at various levels.”
He accused Anthropic of attempting to “STRONG-ARM the Department of War” and warned that he would use the “Full Power of the Presidency” if necessary to enforce compliance.
That order capped days of escalating tension. Anthropic had refused to remove safeguards that prohibit its Claude model from being used for domestic mass surveillance or fully autonomous weapons. The Pentagon insisted it needed access to AI models for “all lawful purposes” within classified systems, arguing that the government, not private contractors, determines military legality.
Earlier in the week, Anthropic said revised contract language from the Department of War made “virtually no progress” toward preserving its restrictions. At the same time, the Pentagon began asking major defense contractors about their reliance on Anthropic, a first step toward potentially designating the company a “supply chain risk.”
Now that the threat has become reality.
Late Friday night, OpenAI CEO Sam Altman announced that his company had finalized an agreement with the Department of War:
“Tonight, we reached an agreement with the Department of War to deploy our models in their classified network.”
Altman emphasized that the deal incorporates explicit safety commitments:
“Two of our most important safety principles are prohibitions on domestic mass surveillance and human responsibility for the use of force, including for autonomous weapon systems. The DoW agrees with these principles, reflects them in law and policy, and we put them into our agreement.”
Defense Secretary Pete Hegseth reposted Altman’s announcement, signaling alignment between the administration and OpenAI.
For readers, this is not just a Silicon Valley spat. It is a real-time example of who controls the guardrails on military AI. Claude had been the only AI model cleared for classified use and was embedded in sensitive defense workflows. That access is now being unwound.
The message from the White House is clear. National security decisions will not be outsourced to corporate terms of service. AI safety language may be negotiated, but operational authority rests with elected leadership.
Artificial intelligence is now embedded in defense planning. This episode shows that the battle over how it is governed has already begun.
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