Sony Music and Warner Chappell sue Anthropic over song lyrics in Claude’s training data

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Sony Music Publishing and Warner Chappell have sued Anthropic in California over song lyrics allegedly taken from pirate archives, naming Dario Amodei and Benjamin Mann personally and seeking up to $150,000 per composition. A Munich court ruled in November 2025 that memorising lyrics inside a model is reproduction and that the text and data mining exception does not cover it.

Sony Music Publishing and Warner Chappell have sued Anthropic in a Northern California court. Dario Amodei and Benjamin Mann are named personally, Business Insider reported.

The language is not restrained. The publishers allege a “brazen campaign of illegally torrenting, scraping, and downloading copyrighted works on a massive scale“.

The works named are familiar. Eye of the Tiger, Hallelujah, September, Livin’ On a Prayer and Great Balls of Fire are among them, alongside Mariah Carey and Taylor Swift compositions.

The route alleged is one Anthropic has been here...

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