Labs
StepFun
The Step family targets fast multimodal agents and tool orchestration.
Types
4 models
Step 5 Preview
stepfun/step-5-preview
InTextImageVideo
OutText
ReasoningToolsStructuredClosed
- Lab
- StepFun
- Providers
- 6
- Context
- 1M
- Output
- 1M
- Price
- $0.95 / $2.57
- Released
- 2026-09-16
Step 3.7 Flash
stepfun/step-3.7-flash
InTextImageVideo
OutText
ReasoningToolsOpen
- Lab
- StepFun
- Providers
- 6
- Context
- 256K
- Output
- 256K
- Price
- $0.19 / $1.14
- Released
- 2026-05-29
Step 3.5 Flash 2603
stepfun/step-3.5-flash-2603
InText
OutText
ReasoningToolsOpen
- Lab
- StepFun
- Providers
- 0
- Context
- 256K
- Output
- 256K
- Price
- —
- Released
- 2026-04-02
Step 3.5 Flash
stepfun/step-3.5-flash
InText
OutText
ReasoningToolsOpen
- Lab
- StepFun
- Providers
- 5
- Context
- 256K
- Output
- 256K
- Price
- $0.09 / $0.30
- Released
- 2026-01-29