The Pentagon has put Anthropic on the clock. On Thursday, the Department of Defense formally notified the company that it has been deemed a “supply chain risk”—a label that has turned its artificial intelligence systems, including its flagship model, Claude—into a liability.

The move escalates a dispute that has been brewing for weeks over Anthropic’s safety-first ethos—its commitment to limit how its technology is deployed—and the DOD’s demand for unfettered control.

The Pentagon is phasing out Claude, one of the world’s most advanced AI models, from its classified networks within six months. On paper, swapping one model for another appears quick. “It’s simple to swap out the models and to install new ones,” according to a source close to Palantir—a defense-tech giant that has partnered with Anthropic to host Claude inside secure military networks.

The hardest part begins after the model is gone, rewiring everything that’s been built around it.

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