Sony and Warner Sue Anthropic for Billions Over Alleged AI Training Piracy

Key points

• Sony Music Publishing and Warner Chappell filed a lawsuit against Anthropic, CEO Dario Amodei, and co-founder Benjamin Mann in a Northern California federal court on August 28, 2026.
• The plaintiffs allege Anthropic illegally torrented, scraped, and downloaded lyrics from tens of thousands of copyrighted works, including hits by Mariah Carey, Marvin Gaye, and Survivor, to train its Claude AI models.
• The lawsuit claims Anthropic stripped identifying information from the songs, denying copyright owners attribution, and seeks statutory damages of up to $150,000 per infringed work and $25,000 for each removal of identifying data.
• Anthropic denied the allegations, stating it disagrees with the publishers' claims and intends to defend itself robustly in court.
• The suit follows a $1.5 billion settlement Anthropic reached with authors in September 2025 over similar copyright infringement claims regarding pirated books.

Background

This lawsuit is part of a broader trend of copyright disputes involving AI companies. In September 2025, Anthropic agreed to a $1.5 billion settlement with authors and publishers, the largest copyright settlement in U.S. history, over allegations of using pirated books to train its models. Other AI companies, such as OpenAI and Suno, have also faced copyright lawsuits from music and media organizations. The music industry has a history of litigating copyright issues, particularly regarding digital piracy and AI training data.

How outlets are covering it

The Guardian and Business Insider emphasize the scale of the alleged theft, highlighting specific songs and the method of stripping attribution. Axios notes the broadness of the lawsuit compared to other cases, such as BMG's claim against 493 compositions, and points out the complexity of music copyright, which can involve multiple holders for lyrics, recordings, and compositions. All sources report Anthropic's denial of the claims and its intention to defend itself. The Guardian also mentions Anthropic's upcoming stock market listing, which could value the company at $2 trillion, adding financial stakes to the dispute.

Why it matters

This lawsuit could set a precedent for how AI companies are held accountable for using copyrighted material in training data. The potential damages, which could run into billions, reflect the high stakes for both AI developers and copyright holders. The case may influence future regulations and legal standards for AI training data, particularly regarding the use of pirated or scraped content. It also highlights the ongoing tension between AI innovation and intellectual property rights.

What to watch

Anthropic is expected to respond to the lawsuit in court, potentially leading to a years-long legal battle. The outcome could impact how AI companies source training data and may prompt further lawsuits from other music publishers or copyright holders. Anthropic's upcoming stock market listing could also be affected by the legal proceedings and potential financial liabilities.