Fenix Flexin isn’t even denying using AI to make ‘Rubberz’ anymore
It took long enough, but now LA rapper Fenix Flexin appears to have admitted using AI for the 80s synth pop-themed song "Rubberz." His comments follow the producer Medasin's videos claiming that an AI tool called Treblo (formerly Sonauto) was used to make the song, and the company releasing an AI detector that identifies it as Treblo AI-created.
The music industry's latest AI controversy has resolved itself in the most predictable way possible: the artist stopped denying and started clarifying. Fenix Flexin's response to the Treblo-generated "Rubberz" is not an admission so much as a redefinition. He never claimed the song was human-made. He claimed the AI had nothing to do with the recording process. That distinction matters, and it is quietly becoming the standard defense in this genre of dispute.
The timeline is instructive. The producer Medasin posted videos claiming Treblo, formerly Sonauto, was behind the track. The company then released an AI detector that flagged the song as its own creation. By the time Fenix responded, the evidence was already public. His reply reads less like a confession and more like a man pointing out that everyone already knew.
What makes this worth watching is not the song itself. It is the pattern. Tyga admitted to using AI on his own 80s-influenced album, and now Fenix has effectively done the same. Two artists, two separate projects, same aesthetic, same tool family. The 80s synth pop revival has become the testing ground for AI-assisted production, and the artists involved are learning that the technology leaves fingerprints.
The real signal here is the AI detector. Treblo did not just build a tool for making music. It built a tool for identifying its own output. That is a new layer of accountability in the creative economy. When a company can prove its software generated a track, the artist's ability to control the narrative shrinks. The defense shifts from "I didn't use it" to "it wasn't part of the recording process."
That distinction will not hold for long. As detection improves and the tools become more embedded in production workflows, the line between assistance and authorship will blur further. Fenix's comment is a snapshot of that blur. He used the app, he did not know what it was until mixing, and he never said otherwise. The industry is moving past the question of whether AI is being used. The question now is who gets to define what counts as using it.