Gateway
StepFun Step Plan (Global)
StepFun Step Plan (Global) is a Gateway provider with 3 models across 3 offerings.
Access
- API base URL
- https://api.stepfun.ai/step_plan/v1
- SDK
- @ai-sdk/openai-compatible
- Environment variables
- STEPFUN_API_KEY
Models
3 of 3 model versions
| Model | Organization | Family | Provider model ID | Protocol | Streaming | Context | Max output | Input | Output | Reasoning | Tool call | Structured | Temperature | Weights | Pricing | Released | Updated | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Step 3.7 Flash stepfun/step/3-7-flash | StepFun | Step | step-3.7-flash | Openai chat | Yes | 256K | 256K | TextImageVideo | Text | Yes | Yes | -No | Yes | Open weight | Pricing unavailable | 2026-05-29 | 2026-06-29 | |
| Step 3.5 Flash 2603 stepfun/step/3-5-flash-2603 | StepFun | Step | step-3.5-flash-2603 | Openai chat | Yes | 256K | 256K | Text | Text | Yes | Yes | -No | Yes | Open weight | Pricing unavailable | 2026-04-02 | 2026-04-02 | |
| Step 3.5 Flash stepfun/step/3-5-flash | StepFun | Step | step-3.5-flash | Openai chat | Yes | 256K | 256K | Text | Text | Yes | Yes | -No | Yes | Open weight | Pricing unavailable | 2026-01-29 | 2026-06-15 |