Sony Music and Warner Chappell Sue Anthropic Over Copyrighted Lyrics

Sony Music Publishing and Warner Chappell have filed a lawsuit against Anthropic in the U.S. District Court for the Northern District of California. The publishers allege the AI company illegally scraped and downloaded tens of thousands of copyrighted works, including song lyrics, to train its Claude AI models.

The lawsuit names the company alongside co-founders Dario Amodei and Benjamin Mann as individual defendants. According to the filing, Anthropic scraped lyrics from platforms such as LyricFind and MusixMatch, both of which pay for licenses from music labels. The plaintiffs identified several specific songs used in the training data, including "September," "Hallelujah," "Paper Rings," "Livin’ On a Prayer," and "Ain’t No Mountain High Enough."

Beyond music lyrics, the suit alleges a broader pattern of copyright infringement. The plaintiffs claim that co-founder Benjamin Mann used BitTorrent to download more than five million pirated books, while other employees downloaded at least two million additional works from Pirate Library Mirror. The music publishers have characterized the activity as one of the largest and most blatant ongoing thefts of intellectual property in history.

The Financial Stakes

The potential financial liability for Anthropic is substantial. The plaintiffs are seeking damages of up to $150,000 per copyrighted work and up to $25,000 for every instance where copyright data was stripped from the material. Given the volume of works allegedly used, the total damages could reach several billion dollars, potentially making this one of the largest copyright cases in U.S. history.

Industry Implications

This legal action underscores an escalating conflict between AI developers and intellectual property holders. At the center of the dispute is the tension between the concept of "fair use" and the accusation of theft regarding the training of Large Language Models (LLMs). As AI companies rely on massive datasets to improve model performance, rights holders are increasingly pushing back to ensure compensation for the use of their creative assets.

A Growing Legal Wave

Anthropic is currently facing a wave of similar legal challenges. The company is embroiled in other copyright lawsuits from a variety of industry players, including BMG, Concord, ABKCO, Round Hill Music, and Universal Music Group, all regarding the unauthorized use of music and lyrics in AI training. The outcome of these cases will likely set a critical precedent for how AI companies must source their training data moving forward.