Sony, Warner sue Anthropic over AI music copyright

Two of music's biggest publishers, Sony Music and Warner Chappell, sued Anthropic on Friday. They say Claude was trained on songs the company never had permission to use. The lawsuit accuses Anthropic of torrenting and scraping copyrighted lyrics and compositions on a massive scale. It names Anthropic's co-founders, Dario Amodei and Benjamin Mann, as defendants too. The publishers call it one of the largest thefts of intellectual property ever alleged.

This isn't a fringe complaint. Sony and Warner are two of the three biggest music companies in the world. They aren't just suing Anthropic the company. They've named co-founders Dario Amodei and Benjamin Mann personally as defendants. That's an unusual and aggressive legal move. The publishers frame this as calculated theft, not an accident. They allege mass torrenting and scraping, not some gray-area training method. Courts elsewhere have split on whether feeding copyrighted work into an AI model counts as fair use. This case lands right in the middle of that unsettled fight. Anthropic hasn't publicly responded.

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Will Anthropic settle this one or fight it in court? A trial could force Anthropic to reveal exactly what data it used to train Claude. That's normally a closely guarded secret. That alone gives the publishers real leverage, even before any verdict. It could also set a precedent other music companies use against every AI company that trained on copyrighted songs. For now, Claude keeps running exactly as before. Nothing changes for anyone using it today.