Metas AI tool Llama almost entirely memorized Harry Potter book, study finds

Meta's Llama model has memorized Harry Potter and the Sorcerer's Stone so well that it can reproduce verbatim excerpts from 42 percent of the book, according to a new study.

Researchers from Stanford, Cornell, and West Virginia University analyzed dozens of books from the now-infamous Books3 dataset, a collection of pirated books used to train Meta's Llama models. Books3 is also at the center of a copyright infringement lawsuit against Meta, Kadrey v. Meta Platforms, Inc. The study's authors...