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StepFun (China)

StepFun (China)

8 models available

Documentation

Models

Browse all models from StepFun (China)

Step 3.5 Flash

stepfun

ReasoningTool UseOpen Weights

Input

$0.10/1M

Output

$0.30/1M

Context

256K

Max Output

256K

Step 2 (16K)

stepfun

Tool Use

Input

$5.21/1M

Output

$16.44/1M

Context

16K

Max Output

8K

Step 1 (32K)

stepfun

Tool Use

Input

$2.05/1M

Output

$9.59/1M

Context

33K

Max Output

33K

Step 3.5 Flash 2603

stepfun

ReasoningTool UseOpen Weights

Input

$0.10/1M

Output

$0.30/1M

Context

256K

Max Output

256K

Step 3.7 Flash

stepfun

ReasoningTool UseOpen WeightsVision

Input

$0.18/1M

Output

$1.11/1M

Context

256K

Max Output

256K

StepAudio 2.5 TTS

stepfun

Input

Free/1M

Output

Free/1M

Context

N/A

Max Output

N/A

StepAudio 2.5 ASR

stepfun

Input

Free/1M

Output

Free/1M

Context

N/A

Max Output

N/A

Step TTS 2

stepfun

Input

Free/1M

Output

Free/1M

Context

N/A

Max Output

N/A

API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
STEPFUN_API_KEY
API Base URL
https://api.stepfun.com/v1
Documentation