Buist v. Anthropic, OpenAI, SpaceXAI & Google: Class Action Alleges Horizontal Agreement to Slow Frontier AI Capability Improvements (N.D. Cal. 3:26-cv-10693)

A September 18, 2026 class-action complaint filed in the Northern District of California alleges that Anthropic, OpenAI, SpaceXAI (Grok), and Google entered a public horizontal agreement to restrain the pace of frontier AI model improvements sold to consumers, in violation…






