StepFun releases StepAudio 3 ASR at 1.7% WER on the AA-WER Index
Artificial Analysis says StepFun’s StepAudio 3 ASR is available through the StepFun API for non-streaming transcription, scoring 1.7% WER on the AA-WER Index, tied with Alibaba’s Fun-Realtime-ASR-preview and down from 4.7% for StepAudio 2.5 ASR. It transcribes at 88x real time and costs $0.40 per hour.