In the Kadrey v. Meta Platforms class action, Judge Vince Chhabria ruled Meta's AI training on authors' books was fair use because plaintiffs failed to prove market harm from market dilution.

From the articleHundreds Sue Meta for Copyright Infringement, Rejecting Class Action PayoutsAlso in Anthropic, music publishers square off on ‘fair use’ defence in AI copyright case, Meta Sued by Hundreds of Authors in AI Training Copyright Cases