Anthropic has agreed to pay at least $1.5 billion to settle a class action brought by book authors who accused the company of training its Claude AI models on pirated copies of their work. The Anthropic authors settlement covers roughly 500,000 books downloaded from two pirate libraries, works out to about $3,000 per eligible title, and requires rightsholders to file a claim through the official settlement site by March 30, 2026. A federal judge in San Francisco granted preliminary approval in September 2025; final approval was still pending after a fairness hearing in May 2026.
What the Case Was About
Three authors — thriller writer Andrea Bartz and nonfiction writers Charles Graeber and Kirk Wallace Johnson — sued Anthropic in August 2024 in the U.S. District Court for the Northern District of California.1CourtListener. Bartz v. Anthropic PBC The complaint alleged that Anthropic downloaded known pirated copies of books from the internet and used them to train Claude.2Susman Godfrey. Susman Godfrey Co-Counsel File Federal Class Action Copyright Infringement Suit Against Anthropic
Court filings later established the scale. Cofounder Ben Mann downloaded roughly 196,640 books from the Books3 dataset in early 2021, then pulled at least five million more from Library Genesis (LibGen) in June of that year. In July 2022, Anthropic downloaded roughly two million additional books from a second pirate site called Pirate Library Mirror (PiLiMi).3Publishers Weekly. Federal Judge Rules AI Training Is Fair Use in Anthropic Copyright Case
On June 23, 2025, Judge William Alsup split the legal questions in two. Using books to train an AI model was “exceedingly transformative” and constituted fair use, he ruled. But downloading millions of books from pirate sites and keeping them in a permanent library was not: those pirated copies “plainly displaced demand for Authors’ books — copy for copy.”4AFS Law. Landmark Ruling AI Copyright Fair Use vs. Infringement Bartz v. Anthropic He certified a class covering roughly 500,000 works on the piracy claims. Two months later, Anthropic settled.
The distinction matters for anyone reading this: the settlement compensates authors whose books were in the LibGen or PiLiMi hauls, not authors who simply believe Claude was trained on their writing.
Who Qualifies for a Payment
The settlement class covers the legal or beneficial copyright owners of books that Anthropic downloaded from the LibGen or PiLiMi datasets, provided the book meets three additional criteria:
- It has an ISBN or Amazon Standard Identification Number (ASIN).
- It was registered with the U.S. Copyright Office within five years of publication.
- The registration was completed either before Anthropic downloaded the book, or within three months of the book’s publication.
Works that were never registered with the U.S. Copyright Office are excluded, and so are non-U.S.-registered works.5ClassAction.org. Bartz v. Anthropic PBC Notice Only claims arising before August 25, 2025, are covered, and the deal does not release claims based on the output of Anthropic’s models.
How Much Each Book Is Worth
The settlement is valued at a minimum of $1.5 billion plus interest, allocated across the roughly 500,000 works on the finalized list. That puts the base payment at about $3,000 per title, with current estimates sitting between $3,000 and $3,100 depending on final claims volume.6Publishers Weekly. Little Drama at Anthropic’s Settlement Hearing If additional qualifying works are identified beyond the anticipated 500,000, Anthropic must pay an extra $3,000 for each one.7Susman Godfrey. Susman Godfrey Secures $1.5 Billion Settlement in Landmark AI Piracy Case
The $3,000 figure is well below the statutory maximum a court could award at trial (up to $150,000 per work in cases of willful infringement, or $30,000 per work otherwise), but attorneys involved in the case note that actual jury awards in copyright cases often land near the $750 statutory floor.8Banner Witcoff. Biggest Public Copyright Settlement in History
How the Money Is Split Between Author and Publisher
For trade and university press titles, the default split is 50/50 between author and publisher. Authors who are the sole rightsholder — self-published authors, or those whose rights have reverted — receive 100% of the payment for their title.9Authors Guild. What Authors Need to Know About the Anthropic Settlement Claimants can propose a different split based on their actual publishing contracts, and disputes between co-owners are resolved by a court-appointed Special Master in a binding decision. Educational works follow a separate process that relies on contractual documentation instead of a preset default.5ClassAction.org. Bartz v. Anthropic PBC Notice
How to File a Claim
Claims are administered by JND Legal Administration through the official site at AnthropicCopyrightSettlement.com. Authors have to file their own claims directly; publishers cannot file on an author’s behalf, even for traditionally published titles.10Penguin Random House. Bartz v. Anthropic Copyright Settlement FAQ for Authors
The deadlines that matter:
- March 30, 2026 — deadline to submit a claim.
- August 2026 — earliest anticipated payment date, assuming final approval clears without further delay.10Penguin Random House. Bartz v. Anthropic Copyright Settlement FAQ for Authors
Notice reached about 97% of publishers and 66% of authors on the finalized Works List, according to filings made after the court demanded a better notice plan. If you think you may be covered but never received a notice, the settlement website has a search function tied to the Works List.
The Registration Gap: Watch Out If You’re a Macmillan Author
Some books that were on the pirate lists don’t qualify because their publishers never registered the copyright with the U.S. Copyright Office, or didn’t register in time. Macmillan acknowledged this problem for a portion of its titles and offered to compensate its affected authors directly for the settlement payments they lost as a result.9Authors Guild. What Authors Need to Know About the Anthropic Settlement The Authors Guild has been trying to identify other publishers with similar registration failures. If your book is traditionally published, it’s worth checking your contract and searching the Copyright Office’s public catalog to confirm the registration was actually filed.
Objecting or Opting Out
Not every author is happy with the deal. Objectors have called $3,000 per book a “pittance” relative to the value of the works taken, and several have challenged the requested attorneys’ fees of roughly $300 million — 20% of the fund — as excessive, with one calculation putting the effective rate above $10,000 per hour.11Ars Technica. Authors Fight for Higher Payouts From Anthropic’s $1.5B Copyright Settlement Copyright law professor Lea Bishop raised a separate concern that Judge Alsup’s recommendation for an independent investigation into those fees was not disclosed to the reassigned judge or to class members.
Twenty-eight writers, including novelist Dave Eggers, opted out of the class and filed their own copyright lawsuit against Anthropic, arguing that class treatment “extinguish[es] high-value copyright claims on the cheap” and seeking a jury trial.12Corporate Counsel. Authors Who Opted Out of $1.5B Anthropic Settlement File Copyright Suit, Request Jury Trial
The Authors Guild has taken a mixed position. It agrees that $3,000 per book feels paltry given the scale of the infringement, but it has cautioned authors against opting out based on promises of much larger recoveries from outside law firms. The Guild points out that actual statutory damage awards frequently come in at or near the $750 minimum, that independent litigation typically drags on for years, and that contingency fees in individual suits run 30% to 35%.13Authors Guild. Opting Out of Anthropic Settlement: What Authors Need to Know
Where Approval Stands Now
The path to approval has not been smooth. Judge Alsup initially rejected the settlement on September 8, 2025, calling it “nowhere close to complete” and accusing class counsel of trying to force a deal “down the throat of authors” without a finalized Works List, a real claims process, or an adequate notice plan.14Words and Money. In a Surprise Setback, Judge Declines to Grant Preliminary Approval of Anthropic Copyright Settlement After the parties answered his 34 written questions and produced the missing materials, he granted preliminary approval on September 25, 2025.15Authors Alliance. Bartz v. Anthropic Settlement Gets Preliminary Approval Key Takeaways
Judge Alsup retired at the end of 2025, and the case was randomly reassigned on December 31 to U.S. District Judge Araceli Martínez-Olguín.16Authors Alliance. Bartz v. Anthropic Updated Opt-Out and Objection Dates and a New Judge A 75-minute fairness hearing took place before her on May 14, 2026. She did not issue final approval at the hearing, instead ordering Anthropic to file a supplemental brief by May 21, 2026, addressing several late opt-out requests. Her other questions focused on the cost reserve structure and attorney fees.6Publishers Weekly. Little Drama at Anthropic’s Settlement Hearing Observers expect final approval to follow, with payments beginning no earlier than August 2026.