Sony and Warner file multi-billion dollar copyright suit against Anthropic

Key points

• Sony Music and Warner Chappell filed a lawsuit in the US District Court for the Northern District of California against Anthropic, CEO Dario Amodei, and co-founder Benjamin Mann.
• The complaint alleges Anthropic unlawfully trained its AI models on 'tens of thousands' of copyrighted compositions, describing the actions as 'one of the largest and most blatant ongoing thefts of intellectual property in history.'
• Plaintiffs are seeking statutory damages of up to $150,000 per infringed work, plus an additional $25,000 for each instance where copyright data was stripped, with total potential damages reaching several billion dollars.
• The suit claims specific methods of infringement, including the use of BitTorrent to download over five million pirated books and the scraping of lyrics from sites like MusixMatch and LyricFind.
• Notable songs cited in the complaint include 'Ain't No Mountain High Enough,' 'Livin' On a Prayer,' 'September,' 'Hallelujah,' and 'Paper Rings.'
• Anthropic did not immediately respond to requests for comment regarding the lawsuit.

Background

This lawsuit occurs shortly after Anthropic agreed to a $1.5 billion settlement with authors and publishers in September 2025, which was described as the largest copyright settlement in US history. The company has also faced separate lawsuits from Universal Music Group, Concord, ABKCO, BMG, and Round Hill Music. The broader context involves ongoing debates about intellectual property in AI, including US signals regarding potential sanctions on Chinese AI models for IP theft, though this specific case focuses on domestic litigation involving major music publishers.

How outlets are covering it

Axios emphasizes the scale of the lawsuit, noting that it targets 'tens of thousands' of works compared to narrower claims in other suits like BMG's, which cited 493 compositions. Axios also highlights the complexity of music copyright, where multiple holders (artists, publishers, labels) can pursue separate claims. The Verge provides specific details on the damages sought, noting the potential for billions in total compensation, and lists specific songs and methods of alleged piracy, such as the use of BitTorrent and scraping from licensed lyric sites. Both outlets agree on the core facts but differ in emphasis: Axios focuses on the legal structure and industry context, while The Verge details the specific allegations and financial stakes.

Why it matters

This lawsuit represents a major escalation in the legal battle over AI training data, moving from settlements to high-stakes litigation involving major music publishers. The potential for billions in damages could set a precedent for how AI companies are held accountable for using copyrighted material, potentially impacting the development and training of future AI models. It also highlights the growing tension between the tech industry and traditional media companies over intellectual property rights in the age of artificial intelligence.

What to watch

Anthropic is expected to respond to the lawsuit, potentially leading to a lengthy legal process. The outcome could influence other pending cases against AI companies and may prompt further settlements or changes in how AI models are trained. The music industry may continue to pursue similar legal actions, given the litigious nature of copyright disputes in this sector.