Alphabet Inc Class CNamed defendant in class-action alleging Google conspired with rival labs to slow AI development, exposing it to Sherman Act antitrust liability.
Four paid subscribers to major AI platforms filed a class-action lawsuit, Buist et al. v. Anthropic PBC et al., in the Northern District of California on September 18, 2026, alleging that Anthropic, OpenAI, SpaceXAI and Google entered an unlawful agreement to restrain trade by collectively slowing the pace of AI development. The plaintiffs—Charles Buist, Nick Spetsas, Cheyenne Hunt and Christine Bullock—argue the labs are artificially reducing output and stifling product improvements, harming consumers who pay for frontier-model access. The suit follows Anthropic CEO Dario Amodei's September 12 essay, We Must Pace the Frontier, which advocated deliberate deceleration in model deployment, and same-day public endorsements of the pacing strategy from Elon Musk, Sam Altman and Demis Hassabis. On September 15, OpenAI's Chris Lehane confirmed to TechCrunch and Bloomberg that the major labs had been coordinating on safety protocols for weeks, and the lawsuit landed three days later, testing whether that coordination is a valid safety defense or a violation of Section 1 of the Sherman Act. Days before the filing, Senators Josh Hawley and Ted Cruz blocked a national-security antitrust exemption for AI companies within the NDAA manager's package, with Hawley declaring, "No antitrust exemptions for AI. Not a chance." The defendants have yet to respond and the case remains in the early pleading stage with no merits ruling in sight.
Alphabet Inc Class CNamed defendant in class-action alleging Google conspired with rival labs to slow AI development, exposing it to Sherman Act antitrust liability.
Space Exploration Technologies Corp. Class A Common StockSpaceXAI is a named defendant in the antitrust suit over an alleged agreement to restrain trade by pacing AI development.
Anthropic is the lead defendant, with CEO Amodei's 'We Must Pace the Frontier' essay cited as the basis for the alleged deceleration agreement.
OpenAI is a named defendant; its Chris Lehane confirmed weeks of coordination among labs, central to the Sherman Act Section 1 claim.