Sony Music, Warner Chappell Sue Anthropic Over AI Copyright Infringement
Sony Music and Warner Chappell sued Anthropic for unauthorized use of copyrighted songs in training AI.
Why it matters: This lawsuit may set key legal precedents on AI training data copyright liability, affecting AI developers and IP strategies in the legal tech industry.
- Sony Music Publishing and Warner Chappell Music filed the lawsuit on August 28, 2026, in Northern California.
- Anthropic allegedly used tens of thousands of copyrighted musical works without authorization to train its AI model, Claude.
- Plaintiffs seek up to $150,000 per infringed work and $25,000 per instance of removed copyright management info.
- Anthropic CEO Dario Amodei and co-founder Benjamin Mann are named as individual defendants.
- This case follows a $1.5 billion settlement related to a prior copyright infringement lawsuit against Anthropic.
Sony Music Publishing and Warner Chappell Music filed suit against Anthropic on August 28, 2026, in the U.S. District Court for the Northern District of California. The complaint alleges that Anthropic used tens of thousands of copyrighted musical compositions without authorization in training its AI language model Claude. The plaintiffs argue that Anthropic obtained these works illegally through torrenting, scraping, and downloading.
The lawsuit demands statutory damages of up to $150,000 for each copyrighted work infringed and up to $25,000 for every instance where copyright management information was removed, as part of the alleged unauthorized use. Anthropic’s CEO Dario Amodei and co-founder Benjamin Mann are named as defendants, reflecting the companies’ intent to hold the leadership accountable.
This lawsuit follows Anthropic's $1.5 billion settlement in the Bartz v. Anthropic case. That prior case similarly involved allegations that Anthropic trained its AI models on pirated copyrighted works, setting a precedent for litigation tied to AI training data.
The current suit underscores growing legal challenges faced by AI developers regarding the use of existing copyrighted content. It is part of a broader industry trend where content owners aggressively pursue protections against unauthorized use of their intellectual property in AI contexts.
While Anthropic has previously challenged actions against it, including court rulings regarding government restrictions, the company has not publicly responded to this specific lawsuit. The outcome of this case could significantly impact how AI developers source and manage training data and reshape intellectual property law as it applies to artificial intelligence.
By the numbers:
- $150,000 — maximum statutory damages sought per infringed work
- $25,000 — maximum damages sought for removal of copyright management information per instance
- Tens of thousands — copyrighted musical compositions allegedly used without permission
- $1.5 billion — prior settlement amount in Bartz v. Anthropic case