Anthropic $1.5B book piracy settlement approved by judge

A federal judge has formally approved Anthropic's $1.5 billion（約2400億円） class action settlement with authors who accused the company of training its AI models on copyrighted books without permission. Judge Araceli Martínez-Olguín signed the order on Monday, determining that the settlement will provide "meaningful relief" to authors, with each book allegedly pirated by Anthropic yielding approximately $3,000 in compensation.

The settlement stems from a copyright lawsuit filed in 2024 by authors Andrea Bartz, Charles Graeber, and Kirk Wallace Johnson. The litigation followed a complex legal trajectory: retired Judge William Alsup initially granted Anthropic a partial victory in an earlier ruling, but subsequently approved a separate class action lawsuit in which plaintiffs claimed the company engaged in "Napster-style downloading of millions of works." Anthropic agreed to the $1.5 billion（約2400億円） settlement in September 2025, and Judge Alsup granted preliminary approval at that time. The law firm representing the plaintiffs has characterized the settlement as the "largest known copyright recovery in history."

According to Anthropic general counsel Aparna Sridhar, more than 91% of authors and publishers covered by the settlement have already claimed their share of the payment. Sridhar stated to Reuters, "We are pleased that more than 91% of authors and publishers covered by the settlement have claimed their share of the payment. We're looking forward ​to bringing this matter to a close."

However, the approval does not resolve all copyright disputes involving Anthropic. The company continues to face separate lawsuits from Chicken Soup for the Soul and several other authors who argue that $3,000 per book does not constitute fair compensation for use of their copyrighted works.

The approval marks a major milestone in a copyright dispute that began in 2024 when authors Andrea Bartz, Charles Graeber, and Kirk Wallace Johnson filed suit against Anthropic over the company's use of copyrighted books to train its AI models. The case has already seen mixed early outcomes: while retired Judge William Alsup granted Anthropic a partial victory in an earlier ruling, he subsequently approved a separate class action lawsuit alleging that the company engaged in "Napster-style downloading of millions of works." Anthropic's September 2025 agreement to the $1.5 billion（約2400億円） settlement represented a significant shift, and the settlement's characterization by the plaintiffs' legal team as the "largest known copyright recovery in history" underscores the scale of the dispute.

The fact that over 91% of eligible authors and publishers have already claimed their payments suggests broad acceptance of the settlement terms, yet the presence of ongoing lawsuits from Chicken Soup for the Soul and other authors signals that not all rights holders view $3,000 per book as adequate. These remaining disputes may shape how the publishing and AI industries approach copyright going forward.