Sony Music and Warner Music Sue Anthropic Over Alleged IP Theft

29 Aug 2026, 9:19 pm · 14d ago · 1 min read · OfficeChai

Major music publishers, including Sony Music Publishing and Warner Chappell Music, have filed a massive copyright infringement lawsuit against generative AI startup Anthropic. The lawsuit accuses the creator of the Claude AI model of engaging in what the publishers describe as the largest intellectual property theft in history. The legal action alleges Anthropic systematically scraped and utilized copyrighted song lyrics and musical compositions without proper licensing or authorization to train its large language models. The high-stakes litigation comes as Anthropic prepares for a potential initial public offering, intensifying scrutiny on AI training data sources and IP protection.