step-3.7-flash

proprietary

阶跃星辰的高速多模态推理模型,**原生支持图片和视频理解**,无需借助视觉 MCP 或额外模型,可直接完成图像 / 视频问答、跨模态分析等任务。支持三档推理强度(low/medium/high),上下文长度为 256K。详见 Step 3.7 Flash。

Context
256K
Input price
$0.2/1M tokens
Output price
$1.15/1M tokens

Capabilities

Reasoning & Interaction
Reasoning
Tool Calling
Infrastructure
Streaming

Details

Model IDstepfun/step-3.7-flash
Creator StepFun
Family—
Licenseproprietary
Statusactive
Typechat
Input modalitiestext, image
Output modalitiestext
Open weightNo
Parameters—
Architecture—
Context window256K tokens
Max input—
Max output—
Reasoning tokens—
Knowledge cutoff—
Release date—
Sourceofficial

Tools

Function Callingfunction_calling
Call external functions and APIs

Pricing

Input
$0.2
Output
$1.15
Cache write
—
Cache read
—
Batch in
—
Batch out
—

API

GET/v1/models/vercel/stepfun/step-3.7-flash