AI firm Anthropic is currently embroiled in a class-action lawsuit concerning promotional discrepancies related to Claude's Max subscription plan. The company stands accused of employing misleading marketing tactics and is suspected of engaging in false advertising. The Max plan purports to provide users with 5 times and 20 times the usage capacity of the Pro plan. However, in practice, it is constrained by a five-hour time slot and weekly limits, resulting in a significantly lower total usage increase than what was initially advertised. Furthermore, these restrictive terms are not prominently displayed, leaving users feeling profoundly let down after making their payments.

Adding to the controversy, when Anthropic initially rolled out the plan in April 2025, there were no such limitations. These restrictions were only introduced in August, ostensibly due to commercialization requirements. Anthropic contends that the restrictive terms were accessible via hyperlinks. Nevertheless, the attorneys representing the plaintiffs—two former Federal Trade Commission lawyers—argue that it is exceedingly difficult for consumers to ascertain their rights and benefits, citing relevant legal precedents on false advertising.

The case was first filed in July of this year but was subsequently withdrawn. It has now been refiled in a more comprehensive form. Anthropic has not yet issued a response to these allegations.