Anthropic settles copyright infringement lawsuit with three writers
Anthropic settled a copyright infringement lawsuit brought by three U.S. writers who alleged their books were used without permission to train Claude AI. A federal court had found the unauthorized use constituted infringement in June 2025, and the parties reached settlement on August 26, 2025.
What happened
Anthropic used books from piracy websites to train its Claude AI model without authorization from the authors.
Three U.S. writers sued Anthropic for copyright infringement over the unauthorized use of their works. A U.S. federal court determined in June 2025 that the use constituted copyright infringement, and the parties reached a settlement agreement on August 26, 2025.
Reported impact
The settlement marked the first major settlement in a large-scale AI copyright lawsuit in the United States, according to Reuters.
Index analysis
The case highlighted tensions between AI model training practices and author copyright protections, drawing international attention to how generative AI companies source training data.
Classification
Sources and evidence
Sources not yet published
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