Provider
3 text-to-speech (TTS) models, ranked from the highest benchmark score to the lowest, out of 100.
Data checked on September 30, 2026 · updated after each benchmark capture
StepFun StepAudio 2.5 TTS (Aug 2026) is a proprietary text-to-speech (TTS) API from StepFun, measured by one independent benchmark, Artificial Analysis.
StepFun Step TTS 2 (Mar 2026) is a proprietary text-to-speech (TTS) API from StepFun, measured by one independent benchmark, Artificial Analysis.
StepFun Step Audio EditX (Mar 2026) is an open-weights text-to-speech (TTS) API from StepFun, measured by one independent benchmark, Artificial Analysis.