Family overview
Understand what changes between versions before choosing an endpoint.
Version history
Compare release dates and lifecycle status.
Capabilities
Review modalities, limits and supported workflows.
Provider access
See which providers expose each version.
Version comparison
Frequently asked questions
Find the right version
Continue to compare available endpoints in the model directory.
Model families
Step
Step model family by StepFun.
Organization: StepFun
Model versions
3
Providers
12
Model versions
3 of 3 model versions
| Model | Family | Providers | Context | Max output | Input | Output | Reasoning | Tool call | Structured | Temperature | Weights | Price | Released | Updated | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Step 3.7 Flash stepfun/step-3.7-flash | Step | 256K | 256K | Yes | Yes | -No | Yes | Open | IN $0.185/M OUT $1.11/M Read $0.037/M | 2026-05-29 | 2026-08-06 | ||||
| Step 3.5 Flash 2603 stepfun/step-3.5-flash-2603 | Step | 256K | 256K | Yes | Yes | -No | Yes | Open | IN $0.1/M OUT $0.3/M Read $0.02/M | 2026-04-02 | 2026-04-02 | ||||
| Step 3.5 Flash stepfun/step-3.5-flash | Step | 256K | 256K | Yes | Yes | -No | Yes | Open | IN $0.1/M OUT $0.3/M Read $0.02/M | 2026-01-29 | 2026-08-06 |