Listener Elo 1,137 ±12 on Artificial Analysis (read October 22, 2026); latency not measured.
Benchmark summary: No speed tier: Coval, the source of the tiers, does not measure this model.
StepFun Step TTS 2 (Mar 2026) is a proprietary text-to-speech (TTS) API from StepFun, measured by one independent benchmark, Artificial Analysis.
Speed tier
Not measured by Coval
No speed tier: Coval, the source of the tiers, does not measure this model.
Data read October 22, 2026. No combined score: methodology
Gradium TTS vs StepFun Step TTS 2 (Mar 2026) Fastest TTS APIs, by speed tierNeither Coval nor Speko measures StepFun Step TTS 2 (Mar 2026)'s latency, so it has no speed tier and does not appear in the speed tiers.
In the Artificial Analysis Speech Arena it holds 1,137 ±12 Elo (95% interval), 32nd highest of the 98 models Artificial Analysis rates; scores whose intervals overlap are a tie. In its Customer Service category, Artificial Analysis places it 31st, at 1,157 Elo.
Speko has not scored its pronunciation of numbers and dates.
Artificial Analysis lists $40. List prices, as each source prints them.
Alibaba Qwen-Audio-3.0-TTS-Plus is a proprietary text-to-speech (TTS) API from Alibaba (Qwen), measured by one independent benchmark, Artificial Analysis.
Alibaba Qwen-Audio-3.1-TTS-Plus is a proprietary text-to-speech (TTS) API from Alibaba (Qwen), measured by one independent benchmark, Artificial Analysis.
Alibaba Qwen3 TTS is a proprietary text-to-speech (TTS) API from Alibaba (Qwen), measured by one independent benchmark, Artificial Analysis.