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.

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.