Anthropic, the developer behind the AI model Claude, is facing a class-action lawsuit filed by Washington, D.C. resident Karl Kahn. The lawsuit, filed in federal court, accuses Anthropic of falsely advertising the usage limits of its premium "Max 5x" and "Max 20x" subscription plans. Since April last year, subscribers reportedly received less usage than promised, which the lawsuit claims constitutes consumer deception and breach of contract. The legal action seeks class-action status and demands refunds and compensation for affected subscribers. The lawsuit highlights concerns over transparency and fairness in AI service subscriptions, potentially impacting Anthropic's business practices and customer trust.