[Sony and Warner Sue Anthropic, Accusing It of 'Blatant Theft' of Intellectual Property] Beating AI News Flash: Sony Music and Warner Music's publishing divisions filed a lawsuit against Anthropic on Friday evening in the U.S. District Court for the Northern District of California, naming its CEO Dario Amodei and co-founder Benjamin Mann as defendants. They accused Anthropic of large-scale copyright infringement during the development and operation of the Claude series AI models. In a 48-page complaint, the plaintiffs alleged that Anthropic obtained copyrighted works through illegal torrent downloads, scraping, and other methods, using 'tens of thousands' of music tracks to train its models—far exceeding the scope of BMG's previous lawsuit involving 493 works. The plaintiffs further accused Anthropic of pirating thousands of copyrighted music tracks and demanded hundreds of thousands of dollars in damages for each infringing work. Anthropic responded: 'We disagree with the publishers' allegations and will actively defend ourselves in court.' Previously, Anthropic reached a $1.5 billion copyright settlement agreement with writers and publishers in September 2025. [Original Link]