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Step 3.5 Flash 2603

stepfun/step-3.5-flash-2603

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StepFun flash model for efficient multimodal reasoning, coding, and tool use

Released
2026-04-02
Context window
256K
Max output
256K
Weights
Open weight
Modalities
TextInputTextOutput
Capabilities
ReasoningTool callTemperatureOpen weight
Providers
EmpirioLabs AIStepFun (China)StepFun (Global)StepFun Step Plan (China)StepFun Step Plan (Global)

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