Four named plaintiffs including lawyer Cheyenne Hunt, Florida attorneys Charles Buist and Nick Spetsas, and California resident Christine Bullock have filed a federal lawsuit against Anthropic, OpenAI, SpaceXAI, and Google in the US District Court for the Northern District of California. According to reports from Politico, the lawsuit alleges that public statements made earlier this month amounted to an illegal business agreement between competitors under US antitrust law. The complaint specifically alleges that this collective agreement among industry rivals violates the Sherman Act by forming an unlawful pact to restrict competition. The plaintiffs are seeking to represent a proposed nationwide class of other paid subscribers to these AI services and have signalled their intention to seek class-action status on behalf of individuals impacted by any corporate decisions to slow down development. As reported by Bloomberg Law, the plaintiffs are seeking class certification, an injunction against the companies, and declaratory judgment that they violated federal antitrust law. According to aninews.in, the case was filed in the Northern District of California and names the four major AI companies, with the plaintiffs arguing that the statements amounted to a business agreement over the pace of development rather than mere sharing of safety concerns.
The alleged coordination occurred on September 12, when Anthropic CEO Dario Amodei issued a public plea for 'industry-wide coordination' to 'pace the frontier' of artificial intelligence advancement. As reported by Politico, SpaceXAI head Elon Musk, OpenAI CEO Sam Altman, and Google DeepMind co-founder Demis Hassabis each publicly responded to Amodei's proposals in agreement on the same day. According to aninews.in, the lawsuit identifies these executives as making or supporting the cited public statements, making the case a challenge to a particular safety approach where rival companies align on their own development pace. According to Bloomberg Law, the plaintiffs allege the conspiracy started when Anthropic Chief Executive Dario Amodei published an essay titled ' and argue that the coordination amounts to a 'classic output-restricting cartel'. Hunt has laid out detailed allegations on X, claiming that the four companies had been meeting privately since July to plan a response to mounting public pressure for AI regulation, and that Amodei's essay calling for a slowdown, followed within hours by public agreement from Musk and Altman, was choreographed rather than coincidental. Lead attorney Nick Rowley for the plaintiffs stated that the action seeks to stop private arrangements from sidelining regulatory oversight, emphasizing that 'private self-serving agreements between the world's most powerful for profit' technology companies'** should not result in AI 'quickly spin[ing] out of human control'.
The lawsuit argues that an agreement among AI companies that their progress should be slower than competition would otherwise produce has anticompetitive effects on consumers. As reported by Bloomberg Law, the plaintiffs challenge 'only what the antitrust laws forbid: an agreement among competitors about how fast their competing products will improve' and argue that 'Congress has granted no exemption for that agreement'. According to Politico, Hunt argues that 'if these companies actually believe their products could risk human extinction, how to move forward is not a decision four CEOs get to make behind closed doors' and that 'rules written by the industry, for the industry, policed by the industry aren't safety standards. They're a grift'. The plaintiffs argue that 'Congress has granted no exemption for that agreement' and that 'the rule of law should be established transparently and lawfully by our government, with accountability to the public'. According to aninews.in, Rowley said the case is meant to prevent private arrangements from bypassing regulatory oversight, with the plaintiffs' policy argument being that if frontier-AI safeguards are needed, they should be set through government processes accountable to the public rather than through an arrangement among major companies. Hunt has highlighted that the AI firms are 'branding it as a safety breakthrough, but it's not. It's four corporations agreeing not to compete on the one thing regulators were about to force them to adopt - safety standards'. She alleges that 'this publicly announced pinky promise gave Mike Johnson cover to adjourn the House of Representatives just before they could pass binding legislation on the topic'.
In his initial essay proposing the slowdown, Amodei acknowledged potential antitrust challenges and suggested that the US government could mediate or enable cross-lab discussions, requiring only a narrow waiver for certain safety conversations. As reported by Politico, Altman responded on social media that OpenAI welcomes the idea of a federal framework setting consistent safety requirements but believes the company doesn't need to wait for anti-trust exemptions or legislation to begin safety work. Hunt has highlighted that the AI firms are 'branding it as a safety breakthrough, but it's not. It's four corporations agreeing not to compete on the one thing regulators were about to force them to adopt - safety standards'. She alleges that 'this publicly announced pinky promise gave Mike Johnson cover to adjourn the House of Representatives just before they could pass binding legislation on the topic'. According to Bloomberg Law, the plaintiffs argue that the coordination amounts to a 'classic output-restricting cartel' and allege they're 'effectively overcharged and are paying the same prices for products that improve more slowly than competition would otherwise produce'. According to aninews.in, the filing does not settle how quickly AI developers should build new systems or which safety rules they should follow, with its narrower claim being that competitors cannot jointly set a development pace if that coordination restricts competition.
