Sony Music and Universal Music Group file new copyright lawsuit against Suno over its v6 AI music model

Sony Music and Universal Music Group have filed a new copyright lawsuit against Suno, this time targeting its v6 model. The complaint alleges v6 was trained via distillation on outputs from Suno's earlier models, which were themselves trained on unlicensed copyrighted music, meaning the infringement carries over even though Suno claims v6 was built "from the ground up." This is an additional filing in an ongoing legal fight, not a settlement or court ruling.

If the "model laundering" theory holds up in court, it would establish that training a new model on an older model's outputs does not launder away the original training data's legal problems. That has implications well beyond music, for any AI company using synthetic data or distillation from models with disputed training data. For now it changes nothing operationally: Suno keeps operating, and the labels' claims are allegations, not findings.

The extraction itself flags no primary evidence links, and no docket number, filing court, or link to the actual complaint is given, so the claims rest on quotes shared with a single outlet rather than a document anyone can check. Coverage framing this as a new front misses that Sony and UMG have already sued Suno once before, this is an escalation of an existing dispute, not a fresh legal action against a previously untouched target.

1. 01Whether the complaint itself becomes publicly available via PACER or a court docket, and which court it was filed in
2. 02Suno's official response and whether it disputes the distillation/training claims specifically, rather than issuing a general denial
3. 03Any ruling or settlement in the original Sony/UMG v. Suno case, since that outcome will likely shape how this new filing is treated