THE CLAIM. Sony Music Publishing and Warner Chappell sued Anthropic on August 28, 2026, alleging Claude's training used tens of thousands of songs via illegal torrenting and lyrics scraped from MusixMatch and LyricFind, calling it one of the largest and most blatant ongoing thefts of intellectual property in history. THE CHECK: the lawsuit is real, filed in the Northern District of California, naming Dario Amodei and Benjamin Mann personally, seeking up to $150,000 per work. But the complaint's headline pattern evidence, Benjamin Mann downloading 5 million pirated books in 2021 and Anthropic employees downloading 2 million more in 2022, is the same conduct Anthropic already paid $1.5 billion to settle with book authors, it is about books, not songs. The actual new allegation, the lyrics scraping, has no exact count given. THE TWIST: this is the sixth major music publisher or label to sue Anthropic since October 2023, not a first-of-its-kind case, the plaintiffs' own filing borrows a co-founder's admitted book piracy to make a fresh, smaller, and less quantified music claim sound bigger than it currently is.