Lawsuit seeks to halt OpenAI, Anthropic, and Google AI development

A coalition of advocacy groups filed a lawsuit Thursday in San Francisco Superior Court seeking to halt OpenAI, Anthropic, Google, Meta, and SpaceXSI from developing or deploying new AI models, citing risks of catastrophic harm and violations of California's unfair competition law. The plaintiffs—including Public Citizen and the Alliance for Secure AI—allege the companies endanger public health and interfere with property use through AI-assisted cyberattacks and increasingly autonomous systems. The case follows Monday's protest at Anthropic's Manhattan offices, where five activists were arrested opposing the firm's planned $1.4 trillion IPO. No immediate changes affect current ChatGPT, Claude, or Gemini users, as the suit targets future development. If successful, a court order could slow new model launches and industry competition, echoing warnings from Anthropic CEO Dario Amodei about needing safety measures to catch up with progress.