Anthropic $1.5bn copyright settlement sets AI liability benchmark

A federal judge in San Francisco on Monday granted final approval to Anthropic’s $1.5 billion settlement of a class-action copyright lawsuit brought by authors. U.S. District Judge Araceli Martinez-Olguin formally signed off on the deal, making it the largest known settlement of a U.S. copyright case and the first major AI training dispute in the country to conclude.

The ruling offers a concrete measure of the financial exposure tech companies and their backers face as they build large language models. Anthropic, which is backed by Amazon and Alphabet, was accused of using pirated books to train its Claude chatbot. While retired Judge William Alsup previously ruled that Anthropic made fair use of the texts for actual AI training, the company still faced a December trial over its retention of more than 7 million pirated books in a "central library." Potential damages in that phase could have reached hundreds of billions of dollars.

By settling for $1.5 billion, Anthropic and its investors have effectively capped a significant tail risk. Judge Martinez-Olguin rejected objections from dissenting authors who argued the payout was inadequate. She stated that complaints about the settlement's size were "not grounded in a realistic assessment of the overall risks and rewards of a trial." The strength of the agreement was reflected in the participation rate, with authors filing claims covering over 92 percent of the more than 480,000 works included.

"We are gratified by the Court’s ruling granting final approval of this historic settlement. It is the largest known copyright recovery in history," said Justin Nelson, the authors' lead attorney. "We look forward to making distributions to the Class as promptly as possible."

Anthropic did not immediately respond to a request for comment. The judge awarded the plaintiffs' attorneys more than $101 million of the $187.5 million they requested in fees.

Ongoing industry risk

While this specific class action is resolved, the broader legal landscape for the AI sector remains highly active. Dozens of comparable lawsuits brought by copyright owners, including prominent news outlets, are still moving through the courts. Furthermore, some authors and publishers who opted out of this settlement have filed separate lawsuits against Anthropic that are ongoing.