Judge Says OpenAI, Anthropic Evidence Doesn’t Go To Meta’s Fair Use Defense

( September 15, 2026, 2:37 PM EDT) -- SAN FRANCISCO — A federal magistrate judge declined to order nonparties Anthropic PBC and OpenAI OpCo LLC to produce information related to market substitution, licensing and torrenting practices, finding that differences in the artificial intelligence models and relevance issues defeat discovery efforts in a trio of copyright cases against Meta Platforms Inc....