Sony and Warner sue Anthropic for billions, alleging 'massive' IP theft
rohanpaul_ai · x · 2026-08-30
Sony Music and Warner Chappell have filed a multi-billion dollar lawsuit against Anthropic, accusing it of “one of history’s biggest and most blatant ongoing intellectual property thefts.”
Key Demands:
- Up to $150,000 per infringed work.
- Disclosure of training data and collection methods.
- Destruction of infringing copies.
Major Allegations:
- Pirated Data Usage: Co-founder Benjamin Mann reportedly discussed torrenting LibGen data with CEO Dario Amodei, who approved it. A prior court found Mann knew the books were pirated.
- Synthetic Data Contamination: Pirated material from LibGen and PiLiMi indirectly reached commercial Claude models via synthetic data and RLHF from other models trained on that material.
- Stripping Metadata: The suit claims Anthropic stripped copyright-identifying information from training materials.
- Rewarding Lyric Reproduction: During Claude finetuning, reviewers selected outputs with accurate copyrighted lyrics, effectively rewarding verbatim recall.
Related event: Sony and Warner Sue Anthropic Over Claude Training Data(5 posts)→
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