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TECH POLICY LAW

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Tracker active US Antitrust and Big Tech

Buist v. Anthropic: antitrust class action over an alleged agreement to slow AI development

Four paying subscribers filed a proposed nationwide class action in the US District Court for the Northern District of California on September 18, alleging that Anthropic, OpenAI, SpaceXAI and Google agreed to slow how fast they improve competing AI products, in violation of Section 1 of the Sherman Act. The Associated Press reported that the companies did not immediately respond to requests for comment.

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20 Sept 2026 first covered
20 Sept 2026 last update

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  1. Consumer Class Action Alleges Anthropic, OpenAI, SpaceXAI and Google Agreed to Slow AI Development

    Four paying subscribers filed a proposed nationwide class action in the US District Court for the Northern District of California on September 18, alleging that Anthropic, OpenAI, SpaceXAI and Google agreed to slow how fast they improve competing AI products, in violation of Section 1 of the Sherman Act. The Associated Press reported that the companies did not immediately respond to requests for comment.

    Read the full update → Source: Complaint, Buist v. Anthropic, PBC, No. 3:26-cv-10693 (N.D. Cal.), September 18, 2026
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