Meta has prevailed in a high-profile federal lawsuit claiming that it allegedly trained its powerful AI model, Llama, on a vast trove of copyrighted books — including President Donald Trump’s own “The Art of the Deal.

A federal judge ruled that Meta ‘s unauthorized use of copyrighted works from Sarah Silverman and other authors to train generative AI models is a “fair use,” but warned that the practice may in many circumstances be illegal.

The authors alleged that Meta trained its AI models on their copyrighted works without permission, potentially violating copyright law.