Sure seems like Fenix Flexin used AI music generator Treblo
The Verge Terrence O’Brien
Turns out Fenix Flexin's viral song "Rubberz" really was made with AI. A new detector built by Treblo itself flagged it as "very likely" made on their platform.
Remember when everyone swore up and down that Fenix Flexin's track "Rubberz" sounded suspiciously robotic? Turns out the internet's ears were right. Musician Medasin had already called out Treblo by name as the likely culprit, and now the company behind that very tool has more or less confirmed it themselves.
On Monday, Treblo rolled out an open-source detection tool called the Treblo AI Music Classifier. It's built to spot songs made with Treblo specifically, not just any AI-generated track, and the company claims a false positive rate under 1 in 1,000. Run "Rubberz" through it, and the results come back "very likely Treblo" with high confidence.
A false positive rate that low still leaves room for doubt, sure. But when the tool built by the exact platform in question flags your song with that much confidence, the benefit of the doubt starts running out fast. This isn't some rival company trying to score points. It's Treblo essentially fingerprinting its own output and finding a match.
For Fenix Flexin, this is about the worst possible follow-up to an already messy few weeks. What started as online suspicion and a musician's educated guess has now hardened into something closer to documented evidence. And in an industry already twitchy about authenticity, having the AI company itself confirm your hit was machine-made isn't the kind of headline anyone wants attached to their name.
My take
Nobody should be shocked that an AI music company built a tool to detect its own AI music and then used it to settle a PR dispute. That's the game now: companies profit from generating undetectable-sounding tracks, then profit again by selling the detection layer when things get awkward. Expect this pattern to repeat across every AI music tool as artists keep getting caught with their hands in the synthetic cookie jar.
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