Emma Roth writes: “A federal judge has sided with Anthropic in an artificial intelligence (AI) copyright case, ruling that training its AI models on legally purchased books without authors’ permission is fair use. It’s a first-of-its-kind ruling in favor of the AI industry, but it’s importantly limited to physical books Anthropic purchased and digitized. Judge William Alsup of the Northern District of California also said in his decision that the company must face a separate trial for pirating books from the internet, and did not address whether AI model outputs infringe copyrights, which is at issue in related cases.”