AI Model Radar
中文 EN

StepAudio 2.5 ASR

StepFun
Model overview

stepaudio-2.5-asr

StepFun's current streaming speech-recognition API.

speech to texttranscriptionspeechrealtimeaudiotranscriptionrealtime voiceenterprise access
CompareCompanyRankingsPublic signals
Representative version

stepaudio-2.5-asr

CompanyStepFun
ReleaseNot disclosed
Release typeModel release
Parameters4B
ArchitectureNot disclosed
ContextNot disclosed
Input modalitiesaudio
Output modalitiestext
Tool use / function callingTool use: Not disclosed; Function calling: Not disclosed
Structured output / reasoningStructured output: Not disclosed; Reasoning: Not disclosed
Vision / audio / videoConfirmed: Audio
Open weights / LicenseNo open weights currently / weight license not disclosed
stepfun-stepaudio-2-5-asr-current · License not applicable
Vendor APIAvailable
StepFun current model catalogstepfun-stepaudio-2-5-asr-current · 2026-07-13
OpenRouterNot separately listed on OpenRouter
PricingNo reliable public source
BenchmarkNo reliable public source
Public signalsNo reliable public source
Use casesStreaming ASR / Meeting transcription / Voice interfaces / transcription
Claim evidenceRelease event / Model specificationsStepFun current model catalogstepaudio-2.5-asr · StepAudio 2.5 ASR · stepaudio-2.5-asr
OpenRouter

Pricing / context / availability

OpenRouterNot separately listed on OpenRouter
OpenRouter listingNot separately listed in the current OpenRouter public list
Mapped versionstepaudio-2.5-asr
stepfun-stepaudio-2-5-asr-current
PricingNo reliable public source
ContextNot disclosed
Speed/LatencyNo reliable public source
Snapshot time2026-08-11T06:28:09.895Z
SourceView source
Verified limitations

Usage boundaries

  • The current catalog does not disclose a standalone launch date.
Missing public information

Public information not yet available

Release date not disclosedNot listed on OpenRouterNo reliable benchmark sourceNo public model-card activity countersNo linkable model-specific reviewSpeed/latency not disclosed