Judge approves Anthropic's $1.5 billion copyright settlement

Copyright lawyers received encouraging news this week following a settlement decision that could trigger additional lawsuits against artificial intelligence companies.

On Monday, Judge Araceli Martínez-Olguín of the U.S. District Court for the Northern District of California approved a $1.5 billion settlement agreement between AI company Anthropic and a group of authors who accused the company of using their books to train its large language models without permission.

According to the authors' attorney, Justin Nelson, the settlement is one of the largest copyright settlements in history and could set a precedent for pending copyright cases against AI companies.

Background of the Case

The settlement concludes a nearly two-year legal process that began in August 2024, when nonfiction authors Charles Graeber, Kirk Wallace Johnson, and Andrea Bartz sued Anthropic under the Copyright Act of 1976. The authors alleged that the AI giant engaged in "largescale theft of copyrighted works." Their complaint was later amended to ensure standing, but the core accusations remained unchanged.

Key Court Rulings

In June 2025, District Court Judge William Alsup (who retired in December 2025) ruled partly in Anthropic's favor. He found that the company's use of legally acquired books to train its model constituted "fair use under Section 107 of the Copyright Act." Under the law, works used for "criticism, comment, news reporting, teaching (including multiple copies for classroom use), scholarship, or research" are considered fair use.

In his 2025 ruling, Alsup agreed with Anthropic's argument that converting physical copies of books it purchased into digital versions for training was not illegal. However, he found that the company's use of pirated books was "not justified by a fair use," and he refused to grant Anthropic's request to shield its repository of copyrighted works "not used for training" from future litigation.

Settlement Terms

Both sides agreed to the terms of the settlement after prolonged negotiations with a third-party mediator. Alsup issued preliminary approval of the settlement terms in September 2025. Authors and publishers had until March 30 to join the claim or opt out.

Under the terms of the agreement:

• Members of the class action suit who declined to opt out "released and forever discharged" any claims of copyright infringement if their works were among the nearly 500,000 books that met class certification requirements.
• The settlement does not cover "future conduct" by Anthropic.
• Authors whose books were used by Anthropic but not on the court-approved list of pirated works are not prevented from suing the company for copyright infringement.

Financial Details

The $1.5 billion award will be split among authors and publishers after fees and expenses are paid. According to Nelson, this nets everyone entitled to a claim roughly $3,000 per work, "four times the value of the statutory minimum."

Broader Implications

Anthropic's decision to settle may hurt the company's finances in the short term, but it likely avoids a court battle with even wider-reaching implications. Many AI companies use pirated data to train their models. AI leaders such as Meta, Perplexity AI, Google, OpenAI, and Nvidia are currently facing similar copyright lawsuits.