The lawsuit, filed September 8, 2026, alleges that Anthropic misled power users into believing they would get more from the company's top-tier Max subscription than they actually received. The case is being brought by attorneys Monica Vaca and Kati Daffan, both of whom previously worked at the Federal Trade Commission under chair Lina Khan.
The expanded filing comes as Anthropic has emphasized the importance of power users to its business. The company has said it prioritizes these users even when that means cutting off other popular applications, such as OpenClaw. However, some of those same customers now argue that Anthropic's advertising for the Max tier was deceptive.
According to The Verge, the case represents a rare attempt to legally penalize AI companies over subscription practices. Further details of the allegations were not included in the report.