StepAudio 2 ASR Pro

Name: StepAudio 2 ASR Pro
Author: StepFun

transcriptionproprietary

32B-parameter speech recognition model for higher accuracy.

Capabilities

Show unsupported (13)

Infrastructure

Streaming

Model IDstepaudio-2-asr-pro

ProviderStepFun

Creatorstepfun

Licenseproprietary

Statusactive

Typetranscription

Input modalitiesspeech

Output modalitiestext

Open weightNo

Parameters—

Architecture—

Languages—

Release date—

Sourceofficial

audio transcriptionsPOST

https://api.stepfun.com/audio-transcriptions

2 元／小时 (CNY)

GET/v1/models/stepfun/stepaudio-2-asr-pro

stepaudio-2-asr-pro

32B-parameter speech recognition model for higher accuracy.

Changes · 5 entries

stepaudio-2-asr-proupdateca7a400Nov 2, 2026, 03:02 AM

tagline32B-parameter speech recognition model for higher accuracy.

pricing_notes["2 元／小时 (CNY)"]

stepaudio-2-asr-proupdateb2f45bfOct 29, 2026, 03:29 AM

statusdeprecated→active

pricing_notes["2元/小时 (CNY)."]→["2 元／小时 (CNY)"]

stepaudio-2-asr-proupdate40decdeSep 16, 2026, 06:38 AM

statusactive→deprecated

stepaudio-2-asr-proupdatec67ed84Jul 31, 2026, 10:28 AM

tagline32B-parameter speech recognition model for higher accuracy.

pricing_notes["2元/小时 (CNY)."]

stepaudio-2-asr-procreate3e56cf1Apr 26, 2026, 07:23 PM