Step 3.5 Flash 2603
StepFun flash model for efficient multimodal reasoning, coding, and tool use
stepfun/step-3.5-flash-2603- Lab
- StepFun
- Family
- -
- Providers
- 4
- Context
- 256,000
- Output limit
- 256,000
- Knowledge
- 2025-01
- Release
- 2026-04-02
- Updated
- 2026-04-02
- Weights
- Open
- Input
- Output types
- Capabilities
- tools, reasoning, temperature
Providers
4| Provider | Lab | Model ID | Context | Output | Price | Reasoning | Tool Call | Structured | Temperature |
|---|---|---|---|---|---|---|---|---|---|
| EmpirioLabs AI | StepFun | step-3-5-flash-2603 | 256,000 | 131,072 | $0.10 / $0.30 | Yes | Yes | Yes | Yes |
| StepFun (China) | StepFun | step-3.5-flash-2603 | 256,000 | 256,000 | $0.10 / $0.30 | Yes | Yes | - | Yes |
| StepFun Step Plan (China) | StepFun | step-3.5-flash-2603 | 256,000 | 256,000 | - | Yes | Yes | - | Yes |
| StepFun Step Plan (Global) | StepFun | step-3.5-flash-2603 | 256,000 | 256,000 | - | Yes | Yes | - | Yes |
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