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Step-3

Reasoning Tool Calling Attachments

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

Providers 1
Released Jul 31, 2025
Input Modalities image, text
Output Modalities text
Tarsk Use coding

Available Providers (1)

Provider Model ID Input Cost Output Cost Context Max Output Docs
ZenMux stepfun/step-3 $0.21/MTok $0.57/MTok 65.5K 64K

Capabilities

Reasoning
Tool Calling
Attachments
Open Weights
Structured Output