Step 3.5 Flash
StepFun flash lane for quick multimodal reasoning and coding assistance
stepfun/step-3.5-flash- Lab
- StepFun
- Family
- -
- Providers
- 10
- Context
- 256,000
- Output limit
- 256,000
- Knowledge
- 2025-01
- Release
- 2026-01-29
- Updated
- 2026-02-13
- Weights
- Open
- Input
- Output types
- Capabilities
- tools, reasoning, temperature
Providers
10| Provider | Lab | Model ID | Context | Output | Price | Reasoning | Tool Call | Structured | Temperature |
|---|---|---|---|---|---|---|---|---|---|
| EmpirioLabs AI | StepFun | step-3-5-flash | 256,000 | 131,072 | $0.10 / $0.30 | Yes | Yes | Yes | Yes |
| Hugging Face | StepFun | stepfun-ai/Step-3.5-Flash | 262,144 | 256,000 | $0.10 / $0.30 | Yes | Yes | - | Yes |
| Kilo Gateway | StepFun | stepfun/step-3.5-flash | 256,000 | 256,000 | $0.10 / $0.30 | Yes | Yes | - | Yes |
| OpenRouter | StepFun | stepfun/step-3.5-flash | 262,144 | 65,536 | $0.10 / $0.30 | Yes | Yes | No | Yes |
| Qiniu | StepFun | stepfun/step-3.5-flash | 64,000 | 4,096 | - | No | No | No | Yes |
| StepFun (China) | StepFun | step-3.5-flash | 256,000 | 256,000 | $0.10 / $0.30 | Yes | Yes | - | Yes |
| StepFun Step Plan (China) | StepFun | step-3.5-flash | 256,000 | 256,000 | - | Yes | Yes | - | Yes |
| StepFun Step Plan (Global) | StepFun | step-3.5-flash | 256,000 | 256,000 | - | Yes | Yes | - | Yes |
| Vercel AI Gateway | StepFun | stepfun/step-3.5-flash | 262,114 | 262,114 | $0.09 / $0.30 | Yes | Yes | - | Yes |
| ZenMux | StepFun | stepfun/step-3.5-flash | 256,000 | 64,000 | $0.10 / $0.30 | No | Yes | - | Yes |
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