StepFun：API 服务商基准测试与分析
分析 StepFun 的 API 服务商在 Artificial Analysis 词错误率指数、速度与价格等性能指标上的表现。
亮点
Artificial Analysis 词错误率（AA-WER）指数（按 API）
Artificial Analysis 词错误率（AA-WER）指数（按 API）
% of words transcribed incorrectly · Lower is better · AA-WER v2 incorporates 3 datasets: AA-AgentTalk (50%), VoxPopuli-Cleaned-AA (25%), Earnings22-Cleaned-AA (25%)
注意： 对于 Earnings22，如果模型因时间限制而无法可靠处理完整长度的音频，我们会将音频切分为约 9 分钟的片段（相关模型：Nova 2 Pro, AmazonGPT-4o Transcribe, OpenAIGPT-4o Mini Transcribe, OpenAI）。对于时间限制更短的模型，我们会将音频切分为约 30 秒的片段（相关模型：Canary Qwen 2.5B, NVIDIAInworld STT 1）。
API 基准测试
Artificial Analysis 词错误率指数 vs. 价格
% of words transcribed incorrectly · Lower is better · AA-WER v2 incorporates 3 datasets: AA-AgentTalk (50%), VoxPopuli-Cleaned-AA (25%), Earnings22-Cleaned-AA (25%) · USD per 1000 minutes of audio
Most attractive quadrant
速度因子
速度因子
Input audio seconds transcribed per second · Higher is better
价格
转写价格
USD per 1000 minutes of audio
关键指标摘要与更多信息
服务商 | 更多详情 | ||||
|---|---|---|---|---|---|
Qwen3.5 Omni Flash |  Alibaba Cloud | 13.5% | 79.3 | 0.00 | |
Qwen3.5 Omni Plus | Alibaba Cloud | 3.5% | 94.7 | 0.00 | |
Nova 2 Pro |  Amazon Bedrock | 4.9% | 22.7 | 3.10 | |
Amazon Transcribe | Amazon Bedrock | 4.1% | 18.3 | 6.00 | |
Universal-3 Pro |  AssemblyAI | 3.1% | 88.1 | 3.50 | |
Universal, AssemblyAI | AssemblyAI | 3.8% | 117.9 | 2.50 | |
MAI-Transcribe-2 |  Microsoft AI | 2.0% | 307.3 | 1.67 | |
MAI-Transcribe-1.5 | Microsoft AI | 2.4% | 196.6 | 6.00 | |
MAI-Transcribe-1 | Microsoft AI | 2.6% | 67.9 | 6.00 | |
transcribe-03-2026 |  Cohere | 4.6% | 120.8 | 0.00 | |
Nova-3 |  Deepgram | 5.2% | 652.1 | 4.30 | |
Nova-3, Telnyx |  Telnyx | 4.8% | 452.2 | 7.40 | |
Nova-2, Telnyx | Telnyx | 5.1% | 479.8 | 7.40 | |
Scribe v2 |  ElevenLabs | 2.2% | 49.1 | 3.67 | |
Solaria-1, Gladia |  Gladia | 4.1% | 81.0 | 10.17 | |
Solaria-3, Gladia | Gladia | 3.2% | 62.6 | 10.16 | |
Chirp 3, Google |  Google | 4.3% | 28.7 | 16.00 | |
Chirp | Google | 31.2% | 14.3 | 16.00 | |
Gemini 3.5 Transcribe | Google | 2.6% | 88.5 | 5.00 | |
Gemini 3.1 Pro Preview (High) | Google | 2.8% | 6.7 | 18.15 | |
Gemini 3.1 Pro Preview (Low) | Google | 3.6% | 6.9 | 7.72 | |
Gemini 3 Flash (High) | Google | 2.9% | 22.5 | 13.70 | |
Gemini 2.5 Flash Lite | Google | 5.2% | 83.4 | 6.56 | |
Gemini 2.5 Flash | Google | 5.1% | 84.3 | 6.66 | |
Gemini 2.5 Pro | Google | 2.9% | 12.1 | 11.39 | |
Gemini 3.1 Flash-Lite Preview (Minimal) | Google | 3.4% | 79.7 | 5.83 | |
Gradium Speech-to-Text |  Gradium | 6.8% | 2.3 | 13.00 | |
Grok Speech to Text, SpaceXAI |  SpaceXAI | 4.0% | 231.4 | 1.67 | |
Inworld STT 1 |  Inworld | 3.9% | 207.5 | 2.50 | |
Voxtral Mini Transcribe 2 |  Mistral | 3.6% | 85.9 | 3.00 | |
Voxtral Small | Mistral | 2.8% | 66.4 | 4.00 | |
Voxtral Mini |  DeepInfra | 3.8% | 79.9 | 1.00 | |
Modulate STT Batch English VFast |  Modulate | 4.2% | 59.8 | 0.42 | |
Canary Qwen 2.5B, NVIDIA |  Replicate | 4.3% | 5.8 | 0.74 | |
Parakeet TDT 0.6B V2, NVIDIA |  NVIDIA | 6.4% | 98.9 | 0.00 | |
Parakeet RNNT 1.1B | Replicate | 5.4% | 6.4 | 1.91 | |
GPT Transcribe, OpenAI |  OpenAI | 3.3% | 35.5 | 4.50 | |
GPT-4o Transcribe | OpenAI | 4.0% | 35.7 | 6.00 | |
GPT-4o Mini Transcribe | OpenAI | 4.5% | 41.1 | 3.00 | |
Smallest AI Pulse Pro |  Smallest.ai | 2.4% | 261.6 | 4.00 | |
Resonant-1 |  Reson8 | 3.4% | 329.0 | 3.60 | |
Rev AI |  Rev AI | 5.9% | 13.1 | 3.33 | |
Smallest AI Pulse | Smallest.ai | 4.4% | 285.4 | 5.00 | |
Soniox v5 Async |  Soniox | 3.8% | 36.8 | 1.66 | |
Soniox V4 | Soniox | 3.9% | 42.6 | 1.66 | |
Speechmatics Melia |  Speechmatics | 4.9% | 181.2 | 4.00 | |
Speechmatics Standard | Speechmatics | 5.1% | 100.0 | 7.50 | |
Speechmatics Enhanced | Speechmatics | 4.0% | 75.1 | 12.50 | |
StepAudio 2.5 ASR, StepFun | StepFun | 4.7% | 84.7 | 0.37 | |
Whisper Large v3 Turbo |  Groq | 4.6% | 134.2 | 0.67 | |
Whisper Large v3 Turbo, Telnyx | Telnyx | 5.5% | 31.0 | 15.00 | |
Wizper Large v3 |  fal.ai | 4.7% | 219.1 | 0.50 | |
Incredibly Fast Whisper | Replicate | 5.7% | 56.3 | 1.49 | |
Whisper Large v3 | Replicate | 10.1% | 2.7 | 4.23 | |
Whisper Large v3 | fal.ai | 4.1% | 55.0 | 1.15 | |
Whisper Large v2 | OpenAI | 4.1% | 28.3 | 6.00 |