Meta's victory came two days after Claude maker Anthropic won a similar case.

This is the first time a judge found that an AI company's use of copyrighted material is fair use.

Judges ruled in favor of Meta and Anthropic over fair use in A.I. training, but future cases may hinge on market harm to creators.

A federal judge ruled late Monday that Anthropic’s use of books to train its AI model Claude qualifies as “fair use” and is ...