Model family
step
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2models
| Model | Organization | Release | Providers | Input / 1M | Weights | Reasoning |
|---|---|---|---|---|---|---|
| Step 3.5 Flash 2603stepfun/step-3.5-flash-2603 | stepfun | 2026-04-02 | 6 | — | Open | — |
| Step 3.5 Flashstepfun/step-3.5-flash | stepfun | 2026-01-29 | 15 | from $0.10 | Open | — |
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