Anthropic urges court in Washington, D.C. to rehear appeal of Pentagon blacklisting
Anthropic is asking a federal court in Washington, D.C. to rehear its appeal in a case concerning the Pentagon's blacklisting of the company's AI models.

TL;DR
- Anthropic is asking a federal court in Washington, D.C., to rehear its appeal regarding the Pentagon's blacklisting of its AI models.
- The company claims the 'supply chain risk' designation was imposed because it declined to allow its models for mass surveillance or lethal autonomous warfare and for publicly explaining AI-safety commitments.
- A divided panel had previously upheld the Pentagon's decision, which blocked defense contractors from using Anthropic's technology.
- Anthropic sued the Trump administration to reverse the action, arguing the ban was arbitrary, unauthorized, and unconstitutional.
- A separate federal judge in San Francisco ruled in August that the DOD violated Anthropic's First Amendment rights with the designation.
- Negotiations between Anthropic and the DOD for deployment on the GenAI.mil platform collapsed in September, leading to the blacklisting.
- Anthropic previously had a $200 million contract with the Pentagon, signed in July 2025.