Step-1o Audio

audioproprietary

* 定位:稳定型,久经考验 * 能力标签:Tool Call * 接入方式:仅支持 API 接入 * 第一代 端到端语音模型。技术成熟稳定,在汽车场景下大规模部署,久经考验,支持多种预置音色风格,支持工具调用。适用于构建基础的语音交互、内容生成等常规业务场景。

Input price
$3.47/1M tokens
Output price
$8.33/1M tokens

Capabilities

Infrastructure
Streaming

Details

Model IDstep-1o-audio
Provider StepFun
Creator stepfun
Familystep-1o
Licenseproprietary
Statusactive
Typeaudio
Input modalitiestext, audio
Output modalitiestext, audio
Open weightNo
Parameters—
Architecture—
Max duration—
Sample rate—
Channels—
Languages—
Genres—
Release date—
Sourceofficial

Endpoints

RealtimeWS
Low-latency streaming via WebSockethttps://api.stepfun.com/v1/realtime

Pricing

Input
$3.47
Output
$8.33
Cache write
—
Cache read
$0.69
Batch in
—
Batch out
—

Family Comparison: step-1o

ModelContextMax outPricing
Step-1o Turbo Vision32K—$0.35$1.11
Step 1o Vision 32k32K—$2.08$9.72
Step-1o Audio——$3.47$8.33

API

GET/v1/models/stepfun/step-1o-audio

Step-1o Audio

step-1o-audio

* 定位:稳定型,久经考验 * 能力标签:Tool Call * 接入方式:仅支持 API 接入 * 第一代 端到端语音模型。技术成熟稳定,在汽车场景下大规模部署,久经考验,支持多种预置音色风格,支持工具调用。适用于构建基础的语音交互、内容生成等常规业务场景。

Changes · 5 entries
step-1o-audioupdateca7a400Nov 2, 2026, 03:02 AM
nameStep 1o Audio→Step-1o Audio
descriptionReal-time voice interaction model. 30-minute live session...→* 定位:稳定型,久经考验 * 能力标签:Tool Call * 接入方式:仅支持 API 接入 * 第一代 端到...
model_typechat→audio
taglineReal-time voice interaction model.
pricinginput$3.472cached input$0.694output$8.333
step-1o-audioupdateb2f45bfOct 29, 2026, 03:29 AM
nameStep 1o Audio→Step-1o Audio
descriptionReal-time voice interaction model. 30-minute live session...→* 定位:稳定型,久经考验 * 能力标签:Tool Call * 接入方式:仅支持 API 接入 * 第一代 端到...
model_typechat→audio
step-1o-audioupdatec67ed84Jul 31, 2026, 10:28 AM
pricinginput$3.472cached input$0.694output$8.333
step-1o-audioupdate80c574aJun 3, 2026, 07:05 AM
taglineReal-time voice interaction model.
step-1o-audiocreate3e56cf1Apr 26, 2026, 07:23 PM