StepFunStepAudio 2

Step-Audio 2 Mini

Step-Audio 2 Mini is the downloadable dialogue member of the Step-Audio 2 family. Its model card describes tool calls and retrieval that can use both text and acoustic material.

Retrieve sound as well as text

The card describes multimodal retrieval for real-world knowledge. This gives the family a route to use an audio reference rather than reducing every source to written words.StepFun Step-Audio-2-mini model card

Measure the full audio path

Practical guidance. When comparing self-hosting with the API, include audio encoding and waveform generation in latency. A language-only token rate does not describe the delay that a person hears.

Specifications & access

Step-Audio 2 Mini specifications
DetailValue and conditions
AccessAPI, Downloadable
Model identifiersStep-Audio-2-ministep-audio-2-mini
LicenseApache 2.0 for the model and code.StepFun Step-Audio-2-mini model card
Hosted optionThe Realtime API also lists step-audio-2-mini.StepFun Realtime API model support
Acoustic retrievalThe model can change voice based on retrieved speech.StepFun Step-Audio-2-mini model card

Related models

  • Step-Audio 2

    StepFun · StepAudio 2

    Step-Audio 2 understands speech, music, environmental sound and emotion, with tools and search.

    Launch date not confirmedAPI · Provider product
  • A base audio-language checkpoint in the Step-Audio 2 framework before dialogue tuning.

    Launch date not confirmedResearch releaseDownloadable
  • A Step-Audio 2 Mini checkpoint for audio understanding and spoken dialogue.

    Launch date not confirmedResearch releaseDownloadable