Sony and Warner Sue Anthropic and Its CEO Over Pirated Training Data for Claude

Sony Music Publishing and Warner Chappell filed a copyright lawsuit against Anthropic in California on August 31, naming not only the company but also CEO Dario Amodei and co-founder Benjamin Mann as individual defendants.

Confirmed

• The plaintiffs allege that Anthropic pirated tens of thousands of copyrighted songs—via torrent seeding, scraping, and downloading—to train Claude, including works by Taylor Swift, Michael Jackson, The Beatles, and Mariah Carey.
• A key basis for the claims comes from facts Anthropic already admitted in the earlier Bartz case: a co-founder torrent-downloaded more than 5 million books in 2021.
• According to @eyishazyer, the complaint uses harsh language, calling it the largest and most brazen infringement in history.
• This continues a string of music copyright lawsuits against Anthropic: Universal and other labels sued earlier, and with Sony and Warner now joining, all three major record companies have taken action.
• Around the same time, Anthropic won a separate lawsuit over a Pentagon blacklist, leaving its situation mixed.

Why it matters

• Naming executives as personal defendants breaks the pattern of suing only the company, potentially creating direct personal risk for AI founders.
• The case builds on facts Anthropic itself admitted in the Bartz case, lowering the plaintiffs' burden of proof and possibly setting a landmark precedent for copyright disputes over AI training data.

2026-08-31 ~ 2026-08-31 · 5 related posts

• Anthropic faces major copyright lawsuit, wins Pentagon blacklist case — eyishazyer · 2026-08-31
• [source] Sony and Warner Sue Anthropic and Its CEO Personally Over Lyraining Data — eyishazyer · 2026-08-31
• [source] Anthropic Sued for Allegedly Scraping Tens of Thousands of Songs — nordicinst · 2026-08-31
• [source] Sony and Warner sue Anthropic over previously admitted piracy — Servola-Journal · 2026-08-31
• Sony & Warner Music sue Anthropic, alleging piracy of artist music for Claude training — Polymarket · 2026-08-31