Anthropic cut up millions of used books, and downloaded 7M pirated ones – judge

> Alsup ruled that Anthropic's use of copyrighted books to train its AI models was "exceedingly transformative" and qualified as fair use

> "All Anthropic did was replace the print copies it had purchased for its central library with more convenient space-saving and searchable digital copies for its central library — without adding new copies, creating new works, or redistributing existing copies"

It was always somewhat obvious that pirating a library would be copyright infringement. The interesting findings here are that scanning and digitizing a library for internal use is OK, and using it to train models is fair use.

> But Alsup drew a firm line when it came to piracy.

> "Anthropic had no entitlement to use pirated copies for its central library," Alsup wrote. "Creating a permanent, general-purpose library was not itself a fair use excusing Anthropic's piracy."

That is, he ruled that

- buying, physically cutting up, physically digitizing books, and using them for training is fair use

- pirating the books for their digital library is not fair use.