Sony and UMG file another copyright suit against Suno
The case puts the training history of Suno’s latest model at the center of the music-rights dispute.
Sony and Universal Music Group have filed another copyright case against Suno, alleging its v6 system carries forward infringement through earlier models rather than being built independently. The labels say those earlier systems learned from unlicensed recordings taken from YouTube and elsewhere; they describe this chain as “model laundering,” and Sony also alleges that Suno used distillation to train v6. The companies argue that the model’s lineage matters because Suno retained unauthorized copies of their recordings, and they remain outside its licensing agreements. When v6 launched, Suno’s Jack Brody said its training set was new and included user data, but offered no further details.
Why it matters
The dispute puts model lineage—not just the data set described at launch—at issue. Whether v6 was built independently could determine whether the labels’ earlier allegations extend to this version. With no licensing agreement between the parties, that question remains contested.
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