StepAudio 3 Realtime

Continue a conversation during tool work

The model can begin a backend task after it understands the intent. The conversation can continue while the task runs, and the result can join the dialogue when it returns.StepFun stepaudio-3-realtime guide

Use Chat when the answer should be text

StepAudio 3 Chat offers the Audio 3 family's sound understanding through Chat Completions. It accepts audio or text by turn and returns text, rather than the duplex speech stream of Realtime.StepFun stepaudio-3-realtime guide

Practical guidance. Chat and Realtime are documented access paths. They are grouped here because the reviewed guides do not establish a separate trained base for each interface.

Separate interruption from silence

Practical guidance. A voice application needs to handle talk-over, short pauses and backchannel words. Evaluate these cases in a complete conversation. A fast first audio response alone does not show whether turn control works well.