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StepAudio 2.5 Chat

StepFun
Model overview

stepaudio-2.5-chat

StepFun's current audio-and-text conversational model.

general LLMspeechaudiomultimodalreasoningvoice assistantchatenterprise access
CompareCompanyRankingsPublic signals
Representative version

stepaudio-2.5-chat

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

Pricing / context / availability

OpenRouterNot separately listed on OpenRouter
OpenRouter listingNot separately listed in the current OpenRouter public list
Mapped versionstepaudio-2.5-chat
stepfun-stepaudio-2-5-chat-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

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