Universal and Sony Sue Suno Again for Billions Over Copyright Infringement

The Second Lawsuit and the 60,202 Recordings

The new complaint, filed on Friday, as case 1:26-cv-14275, names twelve label entities led by UMG Recordings and Sony Music Entertainment, while Warner Music Group is not included among the plaintiffs. The fresh legal action follows a previous lawsuit filed in June 2024 that remains active in the court system. The labels stated in the 45-page filing that a forensic analysis of Suno’s training data uncovered 60,202 copyrighted sound recordings utilized without permission. The labels argue that this figure represents only a small portion of the overall works violated by the artificial intelligence start-up.

Court Rulings and Parallel Legal Proceedings

The majors initially attempted to add the newly discovered recordings to their original 2024 lawsuit by moving to amend the initial complaint. Suno opposed that motion, and on August 18, the court denied it without prejudice, noting that amending the complaint at that stage would disrupt the established case schedule. The court emphasized that the music labels are entitled to pursue valid copyright claims, concluding that proceeding with parallel cases best balanced the interests of the plaintiffs with judicial economy.

Contrasting Legal Arguments Over Training Data and v6 Models

The core of the new complaint targets Suno’s v6 family of models, which the start-up launched following licensing deals with Warner Music Group in November 2025, BMG on August 12, and Believe on September 8. The labels contend that these agreements confirm a functioning market exists for licensing sound recordings to train generative AI models. The labels argue Suno’s training of its new models on the outputs of its previous models does not eliminate infringement, describing the process in the filing with the assertion training a ‘new’ model on the outputs of an infringing model does not eliminate the infringement; it launders it.Universal Music Group and Sony Music Entertainment further claimed in the complaint, V6 is not a fresh start; it is the fruit of the same poisoned tree. In response, a Suno spokesperson said that the labels’ claims are fundamentally flawed on both facts and law, explaining that the platform pulls musical qualities when users input artist names to help people learn the language of music rather than imitate specific works. Suno stated that the v6 models were trained on content licensed from partners, user interactions and preferences, and accumulated team learnings.