People in the U.S. who paid Anthropic directly for Claude Pro, Max 5x or Max 20x and used it between March 4 and May 6, 2026 may be covered by a consolidated proposed class action alleging Anthropic kept full subscription fees while peak-hour session limits and Claude Code defects drained paid usage. No class has been certified and there is nothing to claim yet.
Allegations Only · No Settlement Yet
This article describes a class action complaint. The statements below are unproven allegations. Anthropic, PBC has not been found liable, there is no certified class, and there is nothing to claim at this time. This page is informational and is not legal advice.
What Is the Claude Service Degradation Lawsuit?
Paying Claude subscribers have a consolidated proposed class action against Anthropic, the company behind the Claude AI assistant. The case, In re Claude Service Degradation Litigation, Master File No. 3:26-cv-07699-RFL, is before U.S. District Judge Rita F. Lin in the Northern District of California.The plaintiffs allege that from March 4 to May 6, 2026, Anthropic’s own changes made Claude Pro and Max subscriptions worth less than subscribers paid for: session limits ran out faster during busy hours, and a series of Claude Code changes lowered quality and wasted usage. They say Anthropic kept the full monthly price and gave no refund or credit for those weeks. Anthropic has not yet responded in court, and none of the claims has been proven.
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What the Complaint Alleges
The consolidated complaint describes two overlapping problems. Paid Claude plans cost about $20 a month for Pro, $100 for Max 5x and $200 for Max 20x, and usage on regular Claude and Claude Code counts against one shared allowance, so a problem on either drained the same pool.1. Peak-hour session limits
According to the complaint, an Anthropic engineer announced on X on March 26, 2026 that Free, Pro and Max subscribers would move through their five-hour session limits faster during weekday peak hours, while weekly limits stayed the same. The complaint says Anthropic acknowledged that about 7% of users, particularly Pro subscribers, would hit session limits they had not hit before, and advised moving heavy work to off-peak hours. The plaintiffs allege paying subscribers got no individual notice of the change and no pro rata credit.2. Claude Code changes from March and April
The complaint relies on an April 23, 2026 Anthropic engineering postmortem that, it says, identified three changes affecting Claude Code, Claude Cowork and the Claude Agent SDK:- A lower reasoning default. On March 4, Claude Code’s default reasoning effort was changed from high to medium. The complaint says Anthropic later called it the wrong tradeoff and reversed it on April 7.
- A caching bug. A March 26 caching and context-management change allegedly caused Claude to drop its earlier reasoning on every turn once a session went idle, leading to forgetfulness, repeated work and cache misses that the complaint says Anthropic identified as the likely cause of faster usage drain. The bug was fixed April 10, according to the complaint.
- A verbosity instruction. An April 16 system-prompt change meant to make answers shorter allegedly hurt coding quality and was reverted April 20.
The three plaintiffs are California subscribers on the $20 Pro plan. Two say they used both regular Claude and Claude Code; the third used only regular Claude. They allege tasks that used to fit easily began exhausting their session limits, that some had to buy extra usage, and that the service sometimes still reported a full session after they paid for more.
Who Could Be Covered
The consolidated complaint proposes two groups:- Nationwide class: everyone in the United States who bought a Claude Pro, Max 5x or Max 20x subscription directly from Anthropic and used it between March 4 and May 6, 2026.
- California subclass: the same, limited to people in California.
The Legal Claims and What the Plaintiffs Want
The complaint brings six claims: California’s Unfair Competition Law, False Advertising Law and Consumers Legal Remedies Act, breach of contract, breach of the implied covenant of good faith and fair dealing, and unjust enrichment as an alternative. The plaintiffs say they sent Anthropic the pre-suit notice the Consumers Legal Remedies Act requires on August 11, 2026, and now seek damages under it.They ask for damages and restitution for the share of subscription fees and extra usage charges they say paid for diminished service, and an order requiring Anthropic to clearly disclose material changes to usage allocation, provide account-level usage information and fairly remediate material service degradation.
How the Cases Were Combined
The first case, Pascual v. Anthropic, PBC, was filed July 24, 2026. A second suit, Patel v. Anthropic, PBC (No. 3:26-cv-07837), was related to it on August 20, and on August 26 Judge Lin consolidated the two under the new caption, while denying for now a request to appoint interim lead lawyers. The consolidated complaint followed on September 14.A third case was kept separate. The plaintiff in Kahn v. Anthropic, the June 2026 lawsuit over the Claude Max plan’s “5x” and “20x more usage” claims, asked to relate all three, but on August 12, 2026 a magistrate judge ruled that Kahn is not related to either case, so it proceeds on its own track.
What Happens Next
Under a September 11 order, Anthropic has 30 days from the September 14 consolidated complaint to answer or file a motion, the plaintiffs then have 30 days to oppose any motion, and Anthropic has 21 days to reply. Judge Lin set an initial case management conference for November 4, 2026, by videoconference, with a case management statement due October 28. Anthropic’s court filings list Google and Amazon Web Services as affiliates.Read the Complaint
Questions
Who is covered by the Claude service degradation class action?
The consolidated complaint proposes a nationwide class of people in the United States who bought a Claude Pro, Max 5x or Max 20x subscription directly from Anthropic and used it between March 4 and May 6, 2026, plus a California subclass. Subscriptions bought through a third party, and team or enterprise accounts, are not in the proposed definition. No class has been certified.
Is there a Claude settlement or refund claim form?
No. The case is at the complaint stage. There is no settlement, no certified class and no claim form. Anthropic’s response to the consolidated complaint was due about 30 days after it was filed on September 14, 2026.
What does the lawsuit say went wrong with Claude?
The complaint points to two things. First, a March 26, 2026 change that made Free, Pro and Max subscribers move through their five-hour session limits faster during weekday peak hours. Second, three Claude Code changes that, according to the complaint, Anthropic described in an April 23, 2026 engineering postmortem: a lower default reasoning setting, a caching bug that caused lost context and faster usage drain, and a verbosity instruction that hurt coding quality. These are allegations; Anthropic has not been found liable.
Is this the same case as the Claude Max usage lawsuit?
No. Kahn v. Anthropic, filed in June 2026, challenges how the Max plan’s 5x and 20x usage claims were marketed. On August 12, 2026, a magistrate judge ruled that Kahn is not related to the cases that became the service degradation litigation, so the two proceed separately.
What are the plaintiffs asking for?
Damages and restitution for the part of subscription fees and extra usage charges they say paid for diminished service, plus an order requiring Anthropic to clearly disclose material changes to usage allocation, give account-level usage information and remediate material service degradation.
Sources
• In re Claude Service Degradation Litigation, No. 3:26-cv-07699-RFL (N.D. Cal.) — original complaint (ECF No. 1, July 24, 2026), related-case order (ECF No. 15, Aug. 12, 2026), consolidation order (ECF No. 25, Aug. 26, 2026), scheduling order (ECF No. 30, Sept. 11, 2026), Consolidated Class Action Complaint (ECF No. 31, Sept. 14, 2026) and clerk’s case management notice (ECF No. 22), via the CourtListener docketDescriptions of Anthropic’s announcements and engineering postmortem are as characterized in the complaint. OpenClassActions.com is a consumer news site; it is not a law firm and is not affiliated with any party. It is not legal advice.
