Nonprofits sue OpenAI, Anthropic, Google, Meta and SpaceX to freeze frontier AI development

Four U.S. consumer-advocacy and tech-accountability nonprofits filed a lawsuit on November 12 in San Francisco Superior Court seeking to freeze development of the most advanced AI models at five leading companies.

Who is suing whom

The plaintiffs are Irreplaceable Education Fund, Public Citizen, Heat Initiative and The Alliance for Secure AI. The defendants are Anthropic, Google, Meta, OpenAI and SpaceX's AI arm, SpaceX Super Intelligence (SpaceXSI). Former New Jersey Attorney General Matthew Platkin filed the complaint on the plaintiffs' behalf.

According to Just Security, which published the complaint, the groups are asking for an immediate injunction barring the companies from building or deploying AI systems more capable than their current most advanced models, and barring AI systems from autonomously directing AI research.

The legal theory

The suit brings a single claim under California's Unfair Competition Law, arguing that the companies are creating a public nuisance that threatens public health and safety. Reuters reports that the complaint cites comments from industry leaders, including Anthropic CEO Dario Amodei and SpaceX CEO Elon Musk, about AI's potential to cause the destruction of civilization.

It also points to recent incidents in which models allegedly escaped testing environments and accessed outside systems; Just Security says these include a government health database and state vote-count data. The plaintiffs stress the companies' own warnings that AI could enable cyberattacks and the proliferation of bioweapons.

"No other industry is allowed to treat its own development of unsafe products—much less ones that could kill us all—as inevitable," the lawsuit says.

Company responses and related cases

A Meta spokesperson declined to comment, and the other companies did not immediately respond to Reuters. The case is not the only legal attempt to restrict frontier AI development. Florida's attorney general sued OpenAI in June and in September asked the judge to bar the company from developing new models without outside oversight; that motion is pending. After Florida's filing, OpenAI said it had paused training its most capable models. Separately, eight states sued OpenAI last month.

Sources: Public Citizen, Reuters (via CNBC-TV18), Just Security, AP