Florida Sues to Stop OpenAI, Citing Extinction-Level Risk

Florida has taken its fight against artificial intelligence to court, filing a legal action that asks a judge to halt OpenAI's continued development of large language models on the grounds that the technology poses a danger to human civilization itself.

In court filings, the state describes OpenAI's AI systems as "the greatest public nuisance ever created," arguing that the company has pushed increasingly powerful models into the world without adequate safeguards against catastrophic, even extinction-level, risks. Rather than framing its case around narrower, more familiar complaints such as data privacy, copyright infringement or consumer protection, the state is leaning on public nuisance law, a legal doctrine traditionally used against polluters, negligent landlords and companies whose products create widespread harm to the public.

The move marks one of the most aggressive legal challenges yet mounted by a U.S. state against a major AI developer. While federal regulators and Congress have spent years debating how, or whether, to regulate generative AI, most enforcement action to date has come through narrower channels: lawsuits over training data, disputes about chatbot safety for minors, and consumer protection complaints. Florida's filing instead asks the court to treat the pace and scale of frontier AI development as an emergency requiring judicial intervention, rather than legislative or regulatory action.

OpenAI has not publicly responded in detail to the specific claims, though the company has consistently maintained that it invests heavily in safety research and that its models undergo extensive testing before release. Critics of Florida's approach are likely to argue that public nuisance claims, designed for tangible, localized harms like polluted rivers or noise from a factory, are a poor fit for speculative long-term risks tied to a general-purpose technology used by hundreds of millions of people daily for legitimate purposes.

The case also lands amid a broader wave of state-level skepticism toward AI companies, as attorneys general in multiple states have opened investigations into chatbot safety, marketing practices and the psychological effects of AI companionship products on younger users. Florida's filing goes further than most, seeking not just damages or disclosure but an injunction that could slow or stop specific development work at one of the industry's most prominent labs.

Legal experts note that the request faces a steep climb. Courts have historically been reluctant to use nuisance law to block the ongoing operation of a lawful business, and any injunction touching AI research would likely trigger immediate appeals and arguments over First Amendment and interstate commerce implications. Still, the filing signals that state governments are increasingly willing to test novel legal theories against AI developers rather than wait for federal rules that have yet to materialize.

The case is expected to draw close attention from other state attorneys general, AI safety advocates and the tech industry alike, as it could set an early precedent for how aggressively courts are willing to intervene in the trajectory of AI development.