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A group of artificial intelligence power users has filed a class-action lawsuit against the AI company Anthropic. The users claim that Anthropic misled them about how much they could use its top-tier Claude subscription plan, called the Max plan.
Anthropic sells the Max plan for $100 or $200 per month, promising five to twenty times more usage than its basic $20 monthly Pro plan. However, the lawsuit states that the company hid strict limits in fine print. Customers discovered that their increased usage was restricted to five-hour periods and capped by weekly limits, resulting in far less access than advertised.
The lawsuit was organized by two former officials from the US Federal Trade Commission, Monica Vaca and Kati Daffan. They argue that customers upgraded their plans to avoid falling behind at work, only to find confusing rules hidden behind multiple website links.
Anthropic argued in a court filing that the rules were clearly available through links during the purchase process. The company has not commented publicly on the expanded lawsuit, but subscribers are asking the court to penalize misleading pricing in the AI industry.
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A group of heavy artificial intelligence users has expanded a class-action lawsuit against Anthropic, alleging that the company deceptively advertised the usage limits on its high-end Claude subscription plans. The lawsuit targets Anthropic's "Max" tier—which costs $100 or $200 per month—and claims the company misled customers about how much extra access they were buying compared to the standard $20 per month Pro plan.
According to the complaint, Anthropic advertised that the Max plan provides 5x or 20x the usage of the Pro plan. However, the lawsuit alleges that these multipliers are subject to hidden restrictions, including rolling five-hour session windows and weekly usage caps that drastically reduce total capacity. To find these terms, buyers had to click through multiple hyperlinks scattered across different web pages.
The lawsuit was filed by attorneys Monica Vaca and Kati Daffan, who previously spent a combined 38 years at the Federal Trade Commission under former chair Lina Khan. Vaca noted that many professionals upgraded on the fly to avoid becoming irrelevant in their jobs, only to feel cheated by the hidden caps. The legal challenge comes amid growing consumer frustration over rising costs across the AI industry as companies face mounting pressure to turn a profit.
Anthropic launched the Max plan in April 2025 and introduced the weekly limits several months later in August. In a motion to dismiss an earlier version of the case filed in July, Anthropic argued that session limits were not omitted because users could easily access clarifying terms via hyperlinks during checkout. Anthropic did not respond to requests for comment on the expanded suit, though its recent Fable 5.1 model release noted efforts to address customer feedback on pricing.