The Digester

Pentagon Blacklists Anthropic, Signs Deal with OpenAI

Mar 18th 2026

The Defense Department blacklisted Anthropic after a dispute over redlines on surveillance and autonomous weapons, then announced a contract with OpenAI that permits "all lawful purposes," prompting privacy, oversight, and industry solidarity concerns.

  • Pentagon labeled Anthropic a supply chain risk after the company refused contract terms allowing use of its AI for mass domestic surveillance and fully autonomous weapons.
  • OpenAI secured a separate contract to deploy its models on the Pentagon's classified network that allows use for "all lawful purposes."
  • Experts warn that the phrase "all lawful purposes" may permit mass surveillance because existing law has not kept pace with AI's ability to analyze aggregated personal data.
  • The supply chain risk designation against an American firm is unprecedented and has been compared by experts to China-style military-civil fusion.
  • Public response includes a QuitGPT boycott and a surge in downloads for Anthropic's Claude as users seek alternatives.
  • Tech workers and industry signatories have launched open letters urging companies to resist military pressure and Congress to review the Pentagon's actions.