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StepFun: Step 3.5 Flash
stepfun/step-3.5-flash
Step 3.5 Flash is StepFun's most capable open-source foundation model. Built on a sparse Mixture of Experts (MoE) architecture, it selectively activates only 11B of its 196B parameters per token....
specs & pricing
- Type
- text
- Provider
- stepfun
- Model ID
- stepfun/step-3.5-flash
- Capabilities
- tools, reasoning
- Context window
- 262K tokens
- Input price
- $0.099 / 1M tokens
- Output price
- $0.33 / 1M tokens
Cloud price is billed from prepaid credits when a request fails over to the cloud. Open-weight models run free on GPUs you own — the gateway routes to your nodes first.