Claude Max '5x·20x' advertising lawsuit, some claims continue to be heard

A U.S. federal court in Northern California has allowed parts of a consumer lawsuit against Anthropic over its Claude Max subscription advertising to proceed, rejecting some of the company's dismissal arguments while granting others. The suit, brought by two Max subscribers on behalf of other users, alleges that promotional claims of "5x" and "20x" usage were misleading because they did not adequately explain actual usage limits tied to the monthly fee. The central dispute is whether subscribers could reasonably interpret those multipliers as applying to total monthly usage rather than a narrower baseline. The ruling keeps the case alive and signals that courts see enough merit in the advertising claims to warrant further review. What to watch next is whether the case advances toward class certification and whether Anthropic adjusts how it discloses Claude Max usage terms.