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U.S. Appeals Court Upholds Pentagon Exclusion of Anthropic Over Claude Military-Use Restrictions

September 26, 2026 at 05:21 EDT

Policy & Regulation
Foundation Models

A U.S. appeals court has upheld the Pentagon's decision to exclude Anthropic's Claude from its military supply chain, siding 2-1 with the government in a dispute over whether AI vendors can maintain contractual red lines on autonomous weapons and mass domestic surveillance. The September 25 ruling by the U.S. Court of Appeals for the D.C. Circuit rejected Anthropic's statutory and constitutional challenges, finding that the Department of War had enough support to treat Claude's built-in and contractual use restrictions as a national-security supply-chain risk.

Sept. 25, 2026 · U.S. AI procurement

Pentagon AI Exclusion Upheld

A federal appeals court let the Pentagon keep Anthropic's Claude out of its military supply chain after a dispute over restrictions on autonomous weapons and mass domestic surveillance.

2-1

appeals court vote

days to seek review

restricted use areas

2026

designation and ruling year

How the panel split

judges upheld exclusion

judge dissented

The majority accepted the government's risk theory; the dissent disputed that Anthropic's restrictions fit the statute.

The disputed procurement path

1 · Contract terms

The government sought broad lawful-use language for military AI services.

2 · Vendor red lines

Anthropic kept limits on autonomous weapons and domestic surveillance.

3 · Court review

The D.C. Circuit allowed the exclusion to stand.

Safety argument

Supporters view the case as a test of whether AI labs can enforce safety commitments with government customers.

Reliability argument

Critics argue military systems need predictable performance once models are embedded in operations.

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