Their best-documented evidence comes from the book-torrenting case Anthropic settled for 1.5 billion dollars; they say those pirate libraries also held their works.
“Sony Music Publishing and Warner Chappell Music filed a new multibillion-dollar copyright lawsuit against Anthropic (and named individually CEO Dario Amodei and co-founder Benjamin Mann) in the US District Court for the Northern District of California on August 28, 2026, alleging Claude's training used tens of thousands of songs obtained via illegal torrenting from pirate libraries plus lyrics scraped from MusixMatch and LyricFind, calling it 'one of the largest and most blatant ongoing thefts of intellectual property in history' -- coming after Anthropic's separate $1.5B settlement with book authors over the same torrenting conduct.”
Sony Music Publishing and Warner Chappell Music, represented by Oppenheim + Zebrak LLP and Pryor Cashman LLP, 28 August 2026
Recorded 30 August 2026. Our ruling means: literally true, materially misleading.
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“AI is dramatically accelerating AI research at Anthropic right now, roughly doubling the pace of capabilities progress.”
TRUE, BUTLab Not FieldAjeya Cotra on Planned Obsolescence, reading METR's assessment and Anthropic's S-1 statement that it may imminently meet its own threshold
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