Music giant BMG has filed a lawsuit against Anthropic, the company behind the popular chatbot Claude, alleging it trained its AI models using copyrighted song lyrics from artists such as the Rolling Stones, Bruno Mars, and Ariana Grande. “Anthropic’s practice of training AI models on copyrighted works from torrent sites is in direct violation of the standards required of all responsible actors,” a BMG spokesperson said in a statement quoted by Reuters . The lawsuit details 493 instances of copyright infringement, which could prove costly for Anthropic if the company is found liable in court. Last year, Anthropic chose to pay $1.5 billion in damages to a group of authors who filed a similar lawsuit against the company in 2024.