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Sony Music Publishing and Warner Chappell Sue Anthropic for Alleged 'Brazen' Piracy of Copyrighted Works to Train Claude AI

Aug 30, 2026
TechCrunch
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Summary

Sony Music Publishing and Warner Chappell are suing Anthropic, accusing the AI company of illegally torrenting and scraping millions of copyrighted songs and sheet music to train its Claude AI model in what they call a 'brazen campaign' of piracy.

Key Points

  • Sony Music Publishing, Warner Chappell, and other music publishers are suing Anthropic and its co-founders, accusing the AI lab of a 'brazen campaign' of illegally torrenting, scraping, and downloading copyrighted works to train its Claude AI model.
  • Anthropic is pushing back, stating it disagrees with the publishers' claims and intends to defend itself robustly in court, though this is not its first IP lawsuit — it was previously ordered to pay $1.5 billion in the landmark Bartz case over piracy-based acquisition of copyrighted content.
  • This latest lawsuit is broader than prior cases, specifically accusing Anthropic of 'flagrant piracy' through illegal torrenting to obtain millions of books containing lyrics and sheet music, building on arguments from earlier legal battles involving Concord Music Group and Universal Music Group.

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