StepFun and ACE Studio launch StepAudio 3 Music, a song-generation foundation model

StepFun_ai · x · 2026-09-17

StepFun and ACE Studio unveiled StepAudio 3 Music, StepFun's first music-generation foundation model that turns a prompt and lyrics into a complete song. Users can specify genre, mood, vocal character, instruments, key, BPM, and arrangement. One model covers four workflows: song generation, instrumental generation, music covers, and vocal-to-song arrangement. Powered by ABC-COT, it plans musical structure before synthesis, enabling iteration via prompt rewriting and ABC notation editing. An ABC-COT API is coming soon; interactive demo is live.

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