Fenix Flexin Rubberz AI speculation has acquired a new data point, not a smoking gun. Treblo, the generative-music app accused of making the track, reportedly labeled “Rubberz” likely AI-generated through a new built-in detector. That result, along with a producer’s circumstantial case, does not establish the song’s production history or prove that Treblo made it.
The dispute concerns Fenix Flexin’s June release, an ’80s-leaning synth-pop track that departs from his better-known rap sound. WIRED reported that the song sat at No. 58 on the Billboard Hot 100 at the time of its reporting and that its video had 7 million views. It is a plausible contender in a fragmented summer music cycle, not a universally settled “song of the summer.”
Fenix and the song’s credited producer, Purps on the Beat, have denied using AI. Fenix told Channel 5 that he freestyled the lyrics. Responding separately to accusations online, he said he recorded it as he normally does, pointing to Auto-Tune, reverb and a fake UK accent as the differences. WIRED said its requests for further comment from both went unanswered.
Did Treblo prove that “Rubberz” was made with AI?
No. A detector can return a likelihood assessment, but the reporting does not disclose Treblo’s detection method, accuracy, false-positive rate or whether it can identify the specific tool used to create a song. Without that evidence, the flag is not forensic proof.
The allegation gained traction after producer Medasin posted a video naming Treblo, which was previously called Sonauto. According to WIRED, Medasin pointed out that the service changed names two days before “Rubberz” was released. He also highlighted an older Fenix Instagram Story showing a filename ending in “Sonauto.mp3.” That is suggestive context, not authentication of a finished recording process.
Medasin also used Treblo with “80s synthwave” tags and a prompt about a rapper’s lifestyle, producing a song he said resembled “Rubberz” in sound and some lyric patterns. WIRED’s reporter separately said similar prompts generated comparable structures and phrasing. Generative systems can produce recurring stylistic habits, but a resemblance in output does not show who prompted which system, or what happened later in a studio session.
Medasin told WIRED he believed the overlap made Treblo use a mathematical certainty. That is his conclusion. The published evidence does not reach that threshold.
Fenix later posted what he said was the original project file for “Rubberz.” WIRED reported that producers in the comments argued the visible session looked instead like a completed song divided into basic components with a stem separator, a tool that extracts parts such as drums or bass. The file was not independently authenticated, and the commenters’ interpretation was not verified. Fenix deleted the post hours later; WIRED reported no explanation for its removal.
The useful distinction is annoyingly mundane: a filename, a comparable AI output and a detector flag can justify scrutiny. They cannot, on this record, demonstrate that “Rubberz” was generated by Treblo. The public dispute remains an allegation met by denials, with the decisive production evidence still absent.
This story draws on original reporting from WIRED.
