Sony Music Publishing, Warner Chappell Music, and other companies have filed a lawsuit against Anthropic and its executives in a California court. They accuse Anthropic of unauthorized acquisition of tens of thousands of copyrighted musical works through seed downloads, web scraping, and other means, to train its Claude series of AI models. The models can reportedly replicate lyrics based on user prompts, Suspected of large-scale intellectual property theft (allegedly involving large-scale intellectual property theft). The infringing works include well-known tracks such as 'All I Want for Christmas is You.' The plaintiffs are seeking damages that could reach billions of dollars. Additionally, Anthropic faces claims from Universal Music Group and others. The company has stated that it disagrees with the allegations and will respond to the lawsuit. Currently, Anthropic is preparing to go public, with an estimated valuation of up to $2 trillion. Furthermore, the AI music generator Sumo recently lost a copyright infringement lawsuit against the German copyright licensing agency GEMA.