A Washington DC resident has filed a federal lawsuit accusing Anthropic of misleading Claude Max subscribers about how much they can actually use Claude, saying the real usage caps on Max 5x and Max 20x are hard to determine and lower than what’s advertised.
For one Claude subscriber, the upgrade was supposed to feel like relief. Instead, it became a countdown.
Karl Kahn. a Washington DC resident. filed a federal lawsuit on Monday accusing Anthropic of overselling the usage limits on its Claude Max plans. He alleges the actual caps for the Max 5x and Max 20x tiers are hard to determine and appear lower than the limits the company advertises on its website and elsewhere.
Anthropic sells three paid individual tiers for Claude. Its most affordable option. Claude Pro. starts at $17 per month and promises “at least five times the usage per session compared to our free service” during peak hours. The company also tells customers that the “number of messages you can send will vary based on message length. ” including the length of any files attached. the length of the user’s current conversation. and “the model or feature you use.”.
Starting in April 2025, Anthropic added Max 5 and Max 20x plans. The Max 5x tier costs $100 per month and the Max 20x tier costs $200 per month, with both plans described as offering up to five and 20 times higher usage caps than Pro.
Kahn’s complaint centers on what happened after he upgraded. After he began using Claude Code, he moved to the Max 20x plan in April of this year. He says he hit his weekly usage limits quickly. In one five-hour session, he went through 15 percent of his weekly allowance.
“The actual usage provided by the Max 5x and Max 20x plans is far below the advertised amount of usage,” the lawsuit alleges. Kahn is seeking class action-status on behalf of other US consumers who purchased a Max subscription since Anthropic began offering the plans last year.
Anthropic declined to comment.
The dispute lands in a wider, messy reality about how these systems meter use. Anthropic’s rate limits are a frequent topic of discussion on Reddit, where some users complain that they burn through their allotted time after using Claude Code.
One example described how a user said they “blew past” their five-hour limit after a single Claude Code prompt. Last July, Anthropic imposed weekly rate limits on Claude Code usage after users were reported as running the coding agent “continuously in the background, 24/7.”
Under the hood, the pricing and the limits also run into a basic mismatch: large language models operate on tokens. When a user types a question into Claude’s prompt bar. the system converts words. groups of characters. and punctuation into numbers that map to patterns the models learned in training. Generating a response carries input and output costs, and those can vary depending on how complex the prompt is.
The lawsuit presses that the advertised “usage caps” may not match what subscribers actually experience once they’re interacting with tools like Claude Code—where consumption can spike—and where the real costs of inference aren’t as straightforward as traditional software subscriptions. Kahn’s filing puts that gap at the center of the case: if the limits are unclear. subscribers say. they can’t reliably predict what their paid plan is truly buying.
For now, the only confirmed fact is the escalation: a lawsuit filed Monday, a demand for class action status, and an unanswered question Anthropic customers keep running into—how much Claude Max usage really means in practice.
Anthropic Claude Claude Max Claude Code lawsuit Karl Kahn usage limits rate limits tokens AI subscriptions class action cybersecurity