Sure seems like Fenix Flexin used AI music generator Treblo
The Verge·August 5, 2026
And you thought we were done with this one… | Image: Fenix Flexin We were pretty sure that Fenix Flexin's "Rubberz" was made using AI, but musician Medasin was confident that it was made using Treblo specifically. Now the company and a new detection tool seem to confirm it. On Monday, the company announced the open-source Treblo AI Music Classifier, which detects when a song was generated using Treblo, though not other AI tools. According to a blog post, it has a false positive rate of less than 1 in 1,000. That's not unimpeachable, but it's notable that the company's own Classifier determined that "Rubberz" was "very likely Treblo" with "high confidence," adding more fuel to the PR nightmare for Fenix. …
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