Sony Music Entertainment and Universal Music Group have sued Suno, alleging its v6 models still infringe their copyright, according to Variety. The labels claim Suno trained on outputs and preference signals from earlier models built on unlicensed recordings, potentially covering 60,202 works and up to $9 billion in damages, plus penalties for circumventing YouTube's anti-downloading technology, per Music Business Worldwide. Suno denies wrongdoing, saying v6 was trained on licensed content from partners including Warner Music Group and BMG.
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