Lawsuit Accuses Top AI Firms of Illegal Slowdown Pact
A proposed class action alleges Anthropic, OpenAI, Google, and SpaceXAI coordinated to decelerate AI development, violating antitrust laws and harming paying subscribers.

KEY POINTS
- Lawsuit filed Friday in Northern District of California federal court
- Alleges Anthropic, OpenAI, Google, SpaceXAI coordinated AI development slowdown
- Coordination allegedly occurred around Sept. 12 public exchange between CEOs
- Plaintiffs are paid subscribers seeking nationwide class certification
- Companies have not responded; allegations not yet proven in court
A federal lawsuit filed Friday in the Northern District of California accuses Anthropic, OpenAI, Google, and SpaceXAI of violating antitrust laws by agreeing to coordinate a slowdown in artificial intelligence development. The complaint argues this collusion reduces the value consumers receive from paid AI subscriptions.
The alleged coordination centers on September 12, when Anthropic CEO Dario Amodei published an essay urging industry-wide cooperation to decelerate AI advances for safety. That same day, OpenAI CEO Sam Altman, SpaceXAI CEO Elon Musk, and Google DeepMind co-founder Demis Hassabis publicly responded in agreement.
“Antitrust laws forbid them from taking the shortcut of agreeing to substitute collective restraint for individual accountability.”
The suit represents four named plaintiffs who subscribe to ChatGPT, Claude, Grok, or Gemini, seeking to represent a nationwide class of paid users. Lawyers argue antitrust laws forbid rivals from substituting "collective restraint for individual accountability" rather than slowing progress independently.
The complaint also cites a July 2026 statement signed by high-ranking employees from leading AI labs acknowledging competitive pressure against unilateral slowdowns and calling for government support to slow automated AI development. Amodei previously acknowledged potential antitrust hurdles and suggested U.S. government mediation.
The companies have not yet responded to requests for comment. The existence of an illegal agreement remains an allegation not yet determined by the court.
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