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.

A federal judge on Wednesday sided with Facebook parent Meta Platforms in dismissing a copyright infringement lawsuit from a group of authors who accused the company of stealing their works to train its artificial intelligence technology.

A group of authors, including Sarah Silverman and Ta-Nehisi Coates, have lost their lawsuit against Mark Zuckerberg’s Meta. The writers sued the tech company over their copyrighted works being used to train Meta’s artificial intelligence large language models (LLMs) without permission.