Sony Music Publishing and Warner Chappell Music File Major Copyright Lawsuit Against Anthropic Over AI Training

Two of the world's largest music publishers, Sony Music Publishing and Warner Chappell Music, have filed a 48-page copyright infringement lawsuit against AI company Anthropic. The complaint, filed on August 28, 2026, in the U.S. District Court for the Northern District of California, alleges that Anthropic's AI model, Claude, was trained on pirated song lyrics, potentially leading to billions in damages. This legal action highlights the ongoing dispute over AI training data and intellectual property rights within the entertainment industry.