Anthropic is facing a proposed class-action lawsuit alleging that its premium Claude Max subscription plans provide significantly less usage than advertised. The complaint was filed on June 14 in the U.S. District Court for the Northern District of California by customer Karl Kahn, who seeks to represent subscribers of the Max 5x ($100/month) and Max 20x ($200/month) tiers.
According to the lawsuit, Kahn upgraded to Max 5x in January 2026 and Max 20x in April 2026, expecting usage capacity five and twenty times that of the standard Pro plan. Instead, he claims the actual limits were far lower and difficult to predict, forcing him to overpay and purchase additional access. For instance, a single five-hour coding session consumed around 15% of his weekly allowance on the Max 20x plan.
The filing argues that Anthropic failed to clearly explain how usage is measured, preventing subscribers from verifying whether they received what was promised. Kati Daffan of Vaca Daffan LLP, representing Kahn, emphasized that consumer protection laws require honest advertising, and that the opacity made it hard for users to detect the shortfall. The suit references internal emails from July 2025 that allegedly disclosed expected weekly usage caps, revealing a gap between marketing and reality.
The lawsuit seeks damages, restitution, injunctive relief, and class certification for all U.S. buyers of Max plans since April 2025. It arrives shortly after Anthropic was forced to suspend access to its advanced Fable 5 and Mythos 5 models following a U.S. government directive citing national security and export controls. The company has not yet commented on the lawsuit.
