Sony Music and Universal Music Group have filed a new lawsuit against AI music startup Suno, claiming its latest v6 models were trained on unlicensed recordings. According to Engadget, the labels argue that Suno found a roundabout way to continue using unlicensed music after earlier legal action.

The new filing suggests the labels see the v6 models as an extension of the original infringement rather than a separate matter. It also highlights the intensifying legal pressure on generative AI music companies from major rightsholders.

The case adds another chapter to the ongoing dispute over how AI models are trained on copyrighted material, with the labels insisting that newer versions of the technology do not escape their claims.