Debate erupts over whether Fenix Flexin's Billboard hit was AI-generated

Fenix Flexin, formerly of Shoreline Mafia, achieved solo chart success with “Rubberz,” which now sits at number 58 on the Billboard Hot 100, but the track’s origins are under fire. Observers note the song’s departure from his usual West Coast trap sound toward an ’80s UK synth-pop aesthetic, complete with a faux British accent, raising eyebrows about authenticity. Audio analysis reveals brittle hi-hats, low-bitrate vocal artifacts and erratic reverb, traits commonly linked to AI-generated music, according to songwriter Charlie Harding.

Multiple AI detection services flagged the single’s cover image and lyrics as likely AI-produced, while music-detector tools gave only a 20-30 % AI likelihood. In-studio appearances show the rapper lip-syncing and failing to reproduce the recorded vocal range, leading experts like Curtiss King and critic Anthony Fantano to question his claim that heavy Auto-Tune explains the discrepancies. Despite posting alleged Pro Tools session clips, Fenix has not released full project files, leaving the AI allegation unresolved.