An AI slowdown lawsuit says Anthropic, OpenAI, SpaceXAI and Google broke antitrust law by agreeing to slow down. Here's the claim, the defenses and what's next.
Key takeaways
- Four paid subscribers sued Anthropic, OpenAI, SpaceXAI and Google in federal court in San Francisco on September 18, 2026.
- They say that publicly backing a joint slowdown was a deal among rivals to cut output, which US antitrust law forbids.
- The key evidence is timing: Dario Amodei's September 12 essay calling for coordination, and same-day agreement from Sam Altman, Elon Musk and Demis Hassabis.
- The big questions: do public statements prove a deal, has anyone been harmed yet, and how much does safety count?
- Nothing changes for API users today. But the case could make labs wary of working on safety together in public.
📖 Read the full guide on Van Data Team → AI Slowdown Lawsuit: Is Safety Coordination Collusion?
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