Anthropic, the maker of AI model Claude, is facing a class action lawsuit alleging that its premium Claude Max subscription tiers mislead customers about the amount of usage included. The complaint, filed on June 14 in the U.S. District Court for the Northern District of California by customer Karl Kahn, claims that the Max 5x ($100/month) and Max 20x ($200/month) plans provide less usage than advertised. Kahn, who upgraded from Pro to Max 5x in January and Max 20x in April 2025, alleges he overpaid and had to purchase additional usage after hitting limits. The suit seeks damages, restitution, injunctive relief, and class certification for all U.S. residents who purchased these plans since April 9, 2025. The lawsuit highlights a lack of transparency in how Anthropic measures usage, making it difficult for consumers to verify if they are receiving the promised service. This case comes amid growing competition in premium AI subscriptions from companies like OpenAI, Google, and Perplexity, and shortly after Anthropic launched its advanced Claude Fable 5 and Mythos 5 models, which faced criticism over usage limits and national security concerns.

Key facts

• Lawsuit filed June 14 in Northern California over Claude Max plans.
• Plaintiff Karl Kahn alleges less usage than advertised for Max 5x and 20x.
• Suit seeks class certification for U.S. subscribers since April 9, 2025.
• Anthropic faces criticism over usage transparency and model limits.

KeyAudit data perspective