Los Angeles rapper Fenix Flexin has finally acknowledged what many listeners suspected: his viral synth-pop hit “Rubberz” was created with the help of artificial intelligence. The admission caps a week of accusations, denials, and detective work that has turned the song into a flashpoint for the music industry's growing unease about AI-generated art.

The controversy began when producer Medasin posted a series of videos claiming that “Rubberz,” which has climbed the Billboard Hot 100, was generated by Treblo (formerly Sonauto), an AI music creation tool. Medasin's breakdown went viral, prompting a wave of reactions across music media. Fenix initially pushed back, telling XXL, “No sir, recorded same as all music I do,” and insisting to fans that he had “freestyled” the track.

But over the weekend, the rapper's position shifted. In an Instagram reply to a commenter who pointed out that Tyga had already admitted to using AI on his ‘80s-influenced album $tarface, Fenix wrote:

never said I didn't use AI, i said it had nun to do w recording process. I didn't even know what da app was till we mixed …

The Verge, which first reported the comment, noted that Fenix “appears to have admitted” using AI, even as he tried to carve out a caveat: the technology was used somewhere in the production chain, but not in the vocal booth. That nuance was lost on many listeners, who have since labeled the song “AI slop.” The cover art for the single, which features a garish, slightly deformed illustration, is itself almost certainly AI-generated, according to The Verge.

The Anatomy of an AI Hit

Treblo, the platform at the center of the controversy, hasn't been shy about claiming credit. The company released an AI detector that identifies “Rubberz” as generated by its own software, and a Treblo executive appeared to confirm to Stereogum that the song is indeed the first AI-generated Hot 100 hit. That would be a milestone — and a worrying one for many in the industry.

Pitchfork, in its own investigation, asked the question directly: “So Is Fenix Flexin's ‘Rubberz’ AI or What?” The outlet pointed out that the song's glossy, generic production and oddly sanitized vocals bear strong hallmarks of AI music generators. But Pitchfork also noted a more subtle shift: “Real Artists Might Want to Keep You Guessing.” The ambiguity itself can be a marketing strategy, drawing streams and clicks as fans debate the song's provenance.

Fenix's story is remarkably similar to that of Tyga, who has openly admitted to using AI (specifically the tool Suno) on his new album $tarface. Tyga defended the decision in a Billboard interview, arguing that AI is just another artistic tool. “It's no different than when Auto-Tune came out,” he said. “People were looking at that as cheating, but now everyone is using it.”

Charting the Unchartable?

The emergence of “Rubberz” on the Billboard Hot 100 has raised a critical question: should AI-generated or AI-assisted tracks be eligible for the charts at all? Billboard has not yet issued an official policy, but the debate is reminiscent of earlier controversies over playlisting, streaming manipulation, and ghost producers. Digital Music News reported that insiders are quietly asking whether an AI-generated track should be excluded from consideration, or if the industry should adapt its definitions of songwriting and performance.

In many ways, “Rubberz” is the perfect test case. It channels the 1980s synth-pop aesthetic, a style already deeply reliant on machines. Yet critics argue there is a difference between using synthesizers and drum machines and letting an AI generate the entire melody, lyrics, and vocal performance. The song's defenders counter that human curation and mixing still play a role, and that AI simply democratizes music production for artists who cannot afford studio time.

Authenticity in the Age of AI

The backlash has been fierce, particularly from hip-hop purists. HotNewHipHop framed Fenix's eventual confession as a “finally” moment, while the Daily Wire mocked his insistence that he “freestyled” the song. Far Out Magazine and the New York Post both covered the story with a tone of exasperation, describing Fenix as being “forced to deny” the AI claims before the admission became undeniable.

But the story is bigger than one rapper. Buzz Music, in a pillar piece on major artists using AI, argues that we are at a turning point. “What does it mean for the future of music when the charts are filled with songs that no human could ever replicate live?” The piece suggests that listeners may soon stop caring about the distinction, much as they did with Auto-Tune, vocal pitching, and even sampling.

Pitchfork's essay on the controversy offers a more cynical view: real artists might actually benefit from letting audiences guess. In an era of fractured attention, a mystery can be worth more than clarity. Fenix Flexin's initial denial, subsequent ambiguity, and eventual half-confession may end up being a perfect case study in how AI-driven music is marketed, consumed, and debated.

For now, “Rubberz” continues to stream, Tyga's $tarface looms in the rearview, and the music industry faces a question it cannot autotune away: when a machine writes the hook, who exactly is the artist? Fenix Flexin has now given his answer — it's complicated. But the genie, as they say, is out of the bottle. Or in this case, out of the server rack.