Anthropic AI copyright settlement

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SUMMARY

U.S. District Judge William Alsup granted final approval for a $1.5 billion settlement between Anthropic and authors on September 25, 2025, resolving claims that Anthropic used pirated books to train its AI models. As of June 18, 2026, final approval of this settlement in the class-action lawsuit *Bartz v. Anthropic* remained pending, with the presiding judge declining to approve it for the time being. Over 100 authors initiated a new federal copyright infringement lawsuit against Anthropic in June 2026, alleging the use of nearly 500 registered copyrighted works and opting out of the prior class settlement. The settlement, covering approximately 500,000 works, was initially hailed as the largest copyright recovery in U.S. history, with authors potentially receiving about $3,000 per book.

Timeline

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Timeline of developments

June 2026 2 developments

  1. Anthropic's $1.5 Billion AI Copyright Settlement Approval Pending Judge's Decision

    As of June 15, 2026, the final approval of Anthropic's $1.5 billion settlement in the class-action lawsuit *Bartz v. Anthropic* remained pending, with the presiding judge declining to approve it for the time being. This settlement aims to resolve claims that Anthropic used pirated books to train its AI models.

  2. Over 100 authors sue Anthropic in new lawsuit after opting out of settlement

    Over 100 authors have initiated a new federal copyright infringement lawsuit against Anthropic in June 2026, alleging the use of nearly 500 registered copyrighted works in AI training. These authors opted out of a prior class settlement to pursue individual claims and a jury trial. This action follows Anthropic's agreement to a $1.5 billion settlement in a separate class-action lawsuit.

April 2026 1 developments

  1. Authors and copyright holders file claims in $1.5 billion class-action lawsuit against Anthropic

    Nearly 120,000 authors and copyright holders have filed claims in the class-action lawsuit against Anthropic, covering 91% of eligible works. A final approval hearing for the $1.5 billion settlement is now scheduled for May 14, 2026.

March 2026 2 developments

  1. Anthropic receives nearly 100,000 copyright claims, pledges to destroy pirated content

    Nearly 100,000 claims have been filed for the Anthropic copyright settlement by the March 30, 2026 deadline. Anthropic has certified that it did not use pirated content in its released Claude models and has pledged to destroy any pirated copies of class members' works.

  2. Authors seek final approval for $1.5 billion copyright settlement with Anthropic

    Authors are seeking final approval for the $1.5 billion copyright settlement with Anthropic, with a hearing scheduled for April 23, 2026. Music publishers have also filed new lawsuits against Anthropic alleging infringement of copyrighted lyrics used in AI training. If approved, the author settlement would be the largest copyright class action settlement on record.

January 2026 1 developments

  1. Anthropic's "Project Panama" revealed, involving scanning millions of books for AI training

    Unsealed court filings revealed details of Anthropic's "Project Panama," an internal initiative described as an "effort to destructively scan all the books in the world" for AI training purposes. This project involved purchasing millions of used books, slicing off their spines, and scanning their pages.

December 2025 1 developments

September 2025 3 developments

  1. Authors' Attorneys Assure Judge Alsup of Fair Settlement Process

    Attorneys for the authors filed documents assuring Judge Alsup that the settlement process would be fair and consistent with due process. This filing addressed the judge's concerns about how the claims process would be handled to ensure all eligible authors were properly informed.

  2. Anthropic agrees to pay $1.5 billion to settle copyright lawsuit

    Anthropic formally agreed to pay $1.5 billion to settle the copyright lawsuit. The settlement, covering approximately 500,000 works, was disclosed in court filings, with authors potentially receiving about $3,000 per book. Mary Rasenberger, CEO of the Authors Guild, called it an "excellent result."

August 2025 2 developments

June 2025 1 developments

  1. Judge Alsup rules Anthropic's use of pirated books not fair use, sets trial

    U.S. District Judge William Alsup ruled that while training AI on legally acquired copyrighted books was likely fair use, Anthropic's use of pirated copies was not. This ruling set the stage for a trial specifically on the piracy issue, as Anthropic had downloaded millions of pirated books.

August 2024 1 developments

  1. Authors Bartz, Graeber, and Johnson sue Anthropic for alleged copyright infringement

    Authors Andrea Bartz, Charles Graeber, and Kirk Wallace Johnson filed a class-action lawsuit against Anthropic in California, alleging copyright infringement for using pirated books to train its AI models. The suit claimed Anthropic downloaded millions of copyrighted books from "shadow libraries" like Library Genesis (LibGen) and Pirate Library Mirror (PiLiMi) to train its AI systems.