Anthropic, OpenAI, SpaceXAI, Google Sued Over Alleged Slowdown Pact

Four paid subscribers to ChatGPT, Claude, Grok, and Gemini sued Anthropic, OpenAI, SpaceXAI, and Google on Friday, arguing the four companies illegally agreed to slow the pace of their AI development. The class action was filed in the U.S. District Court for the Northern District of California, CBS News reported, and seeks to represent nationwide paid subscribers who, the complaint says, get less value from their subscriptions when the underlying frontier stops moving.

The suit anchors the alleged coordination to a single date. On September 12, Anthropic CEO Dario Amodei published an essay calling for industry-wide cooperation on decelerating AI progress in favor of safety, warning that "swarms of rogue AI agents could take over the internet in as little as six months." According to the lawsuit, OpenAI's Sam Altman, SpaceXAI's Elon Musk, and Google DeepMind's Demis Hassabis confirmed their agreement the same day.

The antitrust theory is stated flatly in the complaint: "The antitrust laws do not permit competitors to decide among themselves that competition is too dangerous."

Lead attorney Nick Rowley argued the alleged pact would let "AI safety and protocol to be controlled by private self-serving agreements between the world's most powerful 'for profit' technology companies." The CBS report does not describe any private communication or specific delayed product cited in the complaint; the pleading appears anchored to the four executives' public statements on a single day.

None of the four companies had responded to requests for comment by Saturday. The filing lands amid a heavy regulatory stretch for the same defendants — our Anthropic tracker alone has logged hundreds of stories over the past three months, on everything from data-center scouting in the U.K. and Nordics to a fresh $1B AI-evaluator pledge with Accenture.