US judge overturns Pentagon blacklisting of Anthropic

A U.S. federal judge ruled on Thursday, August 27, 2026, that the Trump administration acted unlawfully when it sanctioned artificial-intelligence company Anthropic and labeled it a military supply-chain risk.

Judge Rita Lin barred the federal agencies named in Anthropic’s lawsuit from enforcing an order that stopped them from using the company’s products. She also overturned Defense Secretary Pete Hegseth’s designation of Anthropic as a supply-chain risk. The decision made permanent a temporary suspension issued in March and took immediate effect, though the government may appeal.

The dispute followed Anthropic’s refusal to permit its Claude AI models to be used for domestic surveillance or autonomous weapons. The company says current AI systems are not reliable enough for autonomous weapons and that domestic surveillance would violate rights. Pentagon officials argued that private suppliers should not be able to constrain military operations.

Anthropic alleged that the administration retaliated against its public positions on AI safety, violating its First Amendment rights, and denied the company an opportunity to challenge the designation, violating due-process protections. The Justice Department maintained that the action arose from Anthropic’s refusal to accept contract terms rather than its views.

The ruling removes the designation at issue in the case and blocks enforcement of the related federal restrictions. Anthropic has said the sanctions threatened billions of dollars in business and reputational damage. A separate Anthropic lawsuit concerning another Pentagon designation that could affect civilian government contracts remains pending in Washington, D.C.