Claude Subscribers Sue Anthropic Over Max Plan Limits

An expanded class-action lawsuit filed by Claude subscribers accuses Anthropic of deceptive advertising regarding its high-tier Max subscription plans. Brought by former Federal Trade Commission attorneys Monica Vaca and Kati Daffan, the suit alleges that the artificial intelligence startup misled power users about the actual capacity of its premium offerings. Anthropic sells its Max plan for either $100 per month, which promises five times the usage limits of the standard $20 monthly Pro tier, or $200 per month for 20 times the Pro tier's capacity.

According to the complaint, these advertised multipliers are obscured by restrictive fine print. The lawsuit claims that the promised five-fold or twenty-fold increases are only guaranteed within rolling five-hour windows that are further constrained by a weekly cap. To uncover these restrictions, users must navigate multiple hyperlinks to find definitions of terms like session. Vaca, who spent a combined 38 years at the FTC alongside Daffan under leadership including Lina Khan, noted that customers often upgrade in the middle of urgent projects only to find themselves unexpectedly blocked by these hidden limits.

Anthropic has pushed back against the allegations. In a motion to dismiss an earlier version of the lawsuit filed in July, the company argued that the terms were not omitted but were accessible via hyperlinks, describing the process as "the digital equivalent of flipping a product over to read the back label." Although Anthropic launched the Max tier in April 2025, it did not implement the weekly caps until August. The company recently acknowledged pricing pressures in its Fable 5.1 model release, noting that it was attempting to address user feedback regarding costs.

For AI practitioners, the legal battle highlights a growing frustration with the unpredictable operating costs of advanced models. Many professionals feel compelled to pay premium subscription rates to remain competitive in their fields, yet find themselves throttled by opaque usage policies. If the lawsuit succeeds, it could force AI developers to provide much greater transparency regarding API and subscription limits, ending the industry practice of hiding restrictive usage caps behind nested hyperlinks.