A group of paying artificial-intelligence customers has sued Anthropic, OpenAI, SpaceXAI and Google, alleging the technology companies violated U.S. antitrust law by coordinating efforts to curb the pace of AI development.
The complaint was filed Friday in the U.S. District Court for the Northern District of California and seeks to represent a nationwide class of subscribers to ChatGPT, Claude, Grok and Gemini, according to reporting by the Associated Press. The plaintiffs contend that coordination among major AI competitors could diminish the value customers receive from paid subscriptions by reducing the competitive pressure to improve their products.
According to the AP report, the lawsuit focuses in part on events of Sept. 12, when Anthropic Chief Executive Officer Dario Amodei published an essay advocating industry cooperation to slow certain advances while companies strengthened safety measures. OpenAI CEO Sam Altman, SpaceXAI CEO Elon Musk and Google DeepMind co-founder and chair Demis Hassabis publicly responded to Amodei’s proposal that day in ways the plaintiffs characterize as agreement.
The complaint alleges that the groundwork for coordination began earlier. It cites a July 2026 statement signed by senior employees at several leading AI laboratories that discussed the competitive difficulty individual companies would face if they slowed development on their own and called for government support for an international effort to reduce the pace of automated AI development, the AP reported.
The plaintiffs aren’t challenging the right of any individual company to independently decide that safety concerns warrant moving more slowly. Instead, their case targets alleged collective action among competitors. They argue that companies should remain individually responsible for deciding how quickly to develop and release their technology rather than jointly restraining competition, according to the AP.
Nick Rowley, the lead attorney for the plaintiffs, argued that decisions about controlling potentially dangerous AI shouldn’t be left to private agreements among powerful technology companies. His comments reflected the unusual tension at the center of the lawsuit: The same cooperation that AI executives say could help manage technological risks is being challenged as potentially anticompetitive conduct.
Representatives for Anthropic, OpenAI, Google and SpaceXAI didn’t immediately respond to AP requests for comment Saturday, the news organization reported.
Antitrust Risk Meets AI Safety
The possibility of antitrust scrutiny wasn’t unforeseen. In his proposal, Amodei acknowledged that collaboration between rival laboratories could encounter legal obstacles and suggested the U.S. government could facilitate the discussions or provide a limited antitrust waiver for certain safety-related conversations, according to the AP.
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Altman responded publicly by supporting a federal system that would establish consistent AI safety requirements, while arguing that companies didn’t need to wait for legislation or an antitrust exemption before beginning work intended to build confidence in AI safety, the AP reported.
Read more: US Senators Weigh New Safety Obligations for Powerful AI Developers
The industry’s interest in cooperation has intensified alongside concerns that increasingly capable AI systems could become difficult for humans to control. Leading AI executives have discussed common safety standards and other forms of coordination for years, according to the AP. The new litigation tests whether and under what circumstances such cooperation can coexist with laws designed to preserve competition.
The plaintiffs say their case doesn’t seek to prevent the companies from lobbying Congress, the White House or federal agencies for AI regulation, nor do they oppose the companies requesting an antitrust exemption. Their objection centers on alleged coordination taking place without such government authorization.
That distinction could become increasingly important as Washington weighs how to balance AI safety with the push to maintain U.S. technological leadership.
According to the AP, President Donald Trump has rejected calls for tighter AI regulation and has characterized efforts to constrain the technology as a conspiracy. His administration has emphasized keeping American AI developers ahead of Chinese competitors. Trump also said Saturday that he planned to create an AI task force and appoint an “AI czar,” though the AP reported that he provided few details.
The prospect of giving technology companies an antitrust exemption has also faced resistance in Congress. Republican Sen. Josh Hawley of Missouri recently told a Senate hearing that he wouldn’t support allowing some of the world’s most powerful companies to receive an exemption permitting collaboration, warning about the potential for collusion and reduced competition, according to the AP.
The lawsuit adds another dimension to the debate surrounding the rapid expansion of generative AI. Regulators and lawmakers have been grappling with questions involving safety, market power and national competitiveness. The California case now puts a more fundamental question before the courts: when companies developing potentially consequential technology see cooperation as a safety measure, at what point might that cooperation conflict with competition law?
Source: AP News
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