Sony Music and Warner Chappell have opened a major new legal front against Anthropic, accusing the AI company of using copyrighted music works at scale to build and operate its Claude models. The lawsuit adds another high-profile case to the growing conflict between rights holders and artificial intelligence companies over training data, scraping, and the value of creative work.
What the lawsuit claims
The companies filed suit against Anthropic in the US District Court for the Northern District of California. They are seeking damages for “tens of thousands” copyrighted works, according to the source article.
The financial stakes are significant. Sony Music and Warner Chappell are asking for up to $150,000 per work. They are also asking for up to $25,000 for each instance when identifiable copyright data was stripped.
If a court finds in Sony and Warner’s favor and awards the maximum amount, the damages could amount to several billion dollars. That outcome is not automatic; it depends on what the court finds and what it decides to award.
The complaint also names Co-Founders Dario Amodei and Benjamin Mann as individual defendants. That makes the case about more than Anthropic as a company, because the filing directly targets two people associated with its founding.
The training data allegations
The suit alleges several routes through which copyrighted material entered Anthropic’s systems. It claims that Mann used BitTorrent to download over five million pirated books. It also says employees downloaded at least two million more from Pirate Library Mirror.
The music-related allegations center on lyrics. The complaint claims that Anthropic scraped lyrics from sites like MusixMatch and LyricFind. The source article notes that those sites paid to license content from the labels.
That point matters because the publishers are framing the dispute around both access and permission. Their argument, as described in the source, is not simply that the works existed online. It is that Anthropic allegedly gathered copyrighted works, including lyrics, and used them in connection with its “Claude” series of artificial intelligence models.
“one of the largest and most blatant ongoing thefts of intellectual property in history.”
That phrase comes from the companies’ characterization of the case. The filing also says the plaintiff music publishers brought the action to hold accountable the people they identify as responsible for a large-scale campaign involving torrenting, scraping, and downloading copyrighted works.
Which works are named
The source article identifies several songs named as being found in Anthropic’s training data. They include Marvin Gaye and Tammi Terrell’s “Ain’t No Mountain High Enough,” Bon Jovi’s “Livin’ On a Prayer,” Earth, Wind & Fire’s “September,” Leonard Cohen’s “Hallelujah,” and TaylorSwift’s “Paper Rings.”
Those examples give the dispute a concrete shape. Rather than presenting the case only as an abstract fight over datasets, the complaint points to recognizable songs and alleges that they appeared in training data connected to Anthropic.
The named songs also show why lyrics are a sensitive category in AI copyright fights. Lyrics are short, identifiable creative works, and music publishers already operate within a licensing market for their use. The allegation that Anthropic scraped from licensed lyric sites therefore goes directly to the publishers’ core concern: who gets to decide how those works are used.
How this fits into Anthropic’s wider legal pressure
This lawsuit is described as the latest high-profile suit against Anthropic. The company recently settled a suit brought by the publishing industry for $1.5 billion.
Anthropic has also faced multiple lawsuits from Universal Music Group, Concord, and ABKCO. Separate suits have also come from BMG and Round Hill Music.
Taken together, the cases show that the legal pressure around AI training data is not limited to one corner of the media business. The source article points to publishers, music companies, and labels pursuing claims around copyrighted material and AI systems.
For Anthropic, the Sony Music and Warner Chappell case raises questions about both the source of training materials and the handling of copyright information. For music publishers, it is a bid to turn allegations about scraping and downloading into a damages claim that could become extremely large if the court accepts their arguments and awards the maximum amounts described in the source.
Anthropic did not immediately respond to a request for comment, according to the source article. That leaves the public record, for now, centered on the complaint’s allegations and the publishers’ description of the case.