Sony Music and Warner Chappell Sue Anthropic Over Copyright Infringement

Sony Music and Warner Chappell Music have filed a lawsuit against Anthropic, alleging that its AI models were trained on copyrighted song lyrics without authorization. The case adds to a growing body of litigation from major content rights holders targeting leading AI labs over training data practices. For developers building on Claude or other Anthropic APIs, this lawsuit signals continued legal uncertainty around the provenance of training data and potential downstream liability. The outcome could influence how AI companies disclose training datasets, seek licensing agreements, or adjust model training pipelines going forward. This follows similar suits against OpenAI and other labs, suggesting a systemic industry reckoning with copyright law.