The settlement in Bartz v. Anthropic is a $1.5 billion class action deal resolving claims that Anthropic downloaded pirated books to train its Claude chatbot. It is the largest publicly reported copyright recovery in United States history. Eligible rightsholders who filed timely claims by March 30, 2026 are in line for roughly $2,932 per qualifying work, though final approval from the court has not yet been entered and initial payments are not expected before August 2026 at the earliest.1
What Anthropic Was Accused Of
Authors Andrea Bartz, Charles Graeber, and Kirk Wallace Johnson sued Anthropic on August 19, 2024 in the Northern District of California. They alleged that the company built Claude in part by downloading known pirated copies of copyrighted books from shadow libraries, without ever licensing the works or paying the rightsholders.
Court filings identified three sources. Anthropic used the Books3 dataset, which contained roughly 183,000 books scraped from the piracy site Bibliotik. It downloaded at least five million books from Library Genesis (LibGen). And it pulled approximately two million more from Pirate Library Mirror (PiLiMi). Documentation for Books3 had warned that the dataset was “almost entirely comprised of copyrighted works.” Anthropic employees had also raised internal concerns about the legality of using pirate sites.
The Ruling That Forced the Settlement
On June 23, 2025, Judge William Alsup issued a summary judgment ruling that split the case in two.
Training AI models on copyrighted books, he held, was fair use. He called the practice “transformative — spectacularly so,” writing that Claude did not reproduce the creative elements of the books but instead “iteratively map[ped] statistical relationships” to generate new text. Converting lawfully purchased print books into a digital research library was also permissible.
Downloading books from pirate sites to build that library was not. “The person who copies the textbook from a pirate site has infringed already, full stop,” Alsup wrote, rejecting the argument that a research purpose could excuse the source. “You can’t just bless yourself by saying I have a research purpose and, therefore, go and take any textbook you want.”
That distinction is what produced the settlement. Alsup then certified a class of copyright owners of books Anthropic had downloaded from LibGen or PiLiMi, provided the works had an ISBN or ASIN and a U.S. Copyright Office registration filed within five years of publication. The class covered 482,460 works. Statutory damages run from $750 to $30,000 per work and can reach $150,000 for willful infringement, exposing Anthropic to theoretical liability in the tens of billions. One analysis put the ceiling near $72 billion. The parties entered mediation, and Anthropic agreed to pay $1.5 billion. Judge Alsup granted preliminary approval on September 25, 2025.
What the $1.5 Billion Covers
The settlement fund is non-reversionary, meaning none of it flows back to Anthropic. Payment comes in four installments:
- $300 million by October 2, 2025 (placed in escrow on schedule)
- $300 million within days of final approval
- $450 million by September 25, 2026
- $450 million by September 25, 2027
Beyond the money, Anthropic must destroy every book downloaded from LibGen or PiLiMi and any derivative copies within 30 days of final judgment, and provide written certification that it has done so.
The release is narrow. It covers only past conduct through August 25, 2025. It does not give Anthropic a license to train on these works going forward. It does not release claims about Claude’s outputs. And it does not cover works outside the settlement list. Anthropic did not admit wrongdoing.
Who Qualifies and How the Money Is Split
To claim, a rightsholder must own the legal or beneficial copyright in a work appearing on the settlement’s Works List and hold a timely U.S. Copyright Office registration.
For non-educational works, the default distribution is a 50-50 split between the author side and the publisher side. Self-published authors, or authors whose rights have reverted, receive the full per-work amount. Multiple authors sharing a work split the author half equally; multiple publishers split the publisher half the same way. Claimants can propose a different allocation by submitting their publishing contracts. If rightsholders cannot agree, a court-appointed Special Master resolves the dispute.
Educational and textbook publishers do not use the default split. Those claimants must represent their entitled percentage based on their contracts, with the Settlement Administrator and Special Master available for disagreements.
Claims Deadline and Payout Timing
The claims deadline was March 30, 2026, administered by JND Legal Administration through AnthropicCopyrightSettlement.com. Participation was slow at first and then surged: about 12% of eligible works had claims filed by October 31, 2025, 54% by March 19, 2026, and 91.3% by the deadline — 440,490 of the 482,460 eligible works.
That high claim rate compressed the projected per-work payout. Earlier estimates ran above $3,000; the current figure is approximately $2,931.62, with accrued interest expected to add a small amount.
Payments are not out yet. Final approval has not been formally entered. If approval comes and no appeals follow, the settlement administrator has estimated initial payments could begin by August 2026. Any appeal would push that back.
Objections and the Fee Fight
Fifty-three formal objections were filed by the February 9, 2026 deadline. Several arguments recurred.
Some objectors said the roughly $3,000 per-work figure was too low next to statutory damages of up to $150,000 per infringement, and that the deal let Anthropic buy out massive piracy at a discount. Others said the distribution structure favored publishers over authors and that the class notice understated the tradeoff.
Attorney fees drew particular scrutiny. Class counsel requested approximately $187.5 million in fees, about $2.8 million in expenses, and $18.2 million in cost reserves — roughly $208.6 million in total deductions — along with $50,000 service awards for each of the three named plaintiffs. Anthropic itself objected to $75 million earmarked for “publishers coordination counsel” and “authors coordination counsel,” arguing those firms contributed little. Author Pierce Story estimated the fee request worked out to $10,000 to $12,000 per hour and argued that cutting counsel fees to $70 million would raise individual author payouts by about 25%.
Copyright law professor Lea Victoria Bishop raised a separate set of concerns. She argued that roughly 2.5 million non-English works had been excluded because they lacked U.S. Copyright Office registrations, a barrier she said Congress removed decades ago. She also alleged that a December 2025 order from Judge Alsup criticizing the fee-sharing arrangement between class counsel and publisher attorneys was omitted from materials given to the successor judge, and asked the court to suspend class counsel pending an ethics investigation.
The case was reassigned from the retired Judge Alsup to Judge Araceli Martínez-Olguín, who held the final fairness hearing on May 14, 2026. Lead attorney Justin Nelson reported the 92.77% claims rate and called the opt-out rate “minuscule.” The judge focused her questions on fees rather than the settlement’s substantive terms, did not rule from the bench, and ordered supplemental briefing due by May 21, 2026, including on whether to honor unexcused late opt-outs.
What the Settlement Does Not Resolve
The release is limited to past piracy claims by the certified class. Several things sit outside it.
Opt-outs have already produced new suits. Journalist John Carreyrou and five other authors filed Carreyrou v. Anthropic in December 2025, naming Anthropic along with Google, Meta, OpenAI, xAI, and Perplexity AI, and pursuing individualized statutory damages instead of class treatment. A group of 25 class members who opted out filed Cruz v. Anthropic on May 13, 2026. Music publishers have moved to amend their complaint in Concord Music Group v. Anthropic to add piracy claims. Additional suits including Chicken Soup for the Soul v. Anthropic and Cognella v. Anthropic were filed in 2026. Judge Martínez-Olguín rejected Anthropic’s attempt to consolidate the new cases into the Bartz docket.
The settlement also does not license future training on the same works, does not resolve claims about what Claude produces as output, and does not cover works that were not on the Works List or that lacked the required copyright registration. Rightsholders in any of those categories are not released and are not paid.