StepFun | Sulat AI Models

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StepFun | Sulat AI Models

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StepFun

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stepfunstepfun@ai-sdk/openai-compatible

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Quick Info

Documentation: https://platform.stepfun.com/docs/zh/overview/concept
API URL: https://api.stepfun.com/v1
Synced at: Apr 18, 2026

Models served

4 models available through StepFun

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StepFun

Step 3.5 Flash 2603

step-3.5-flash-2603StepFunReleased Apr 2, 2026256,000 token context windowIn $0.10 · Out $0.30

ReasoningTool callingOpen weightsTemp controls

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Detail Provider

StepFun

step-3.5-flashStepFunReleased Jan 29, 2026256,000 token context windowIn $0.096 · Out $0.288

ReasoningTool callingOpen weightsTemp controls

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Detail Provider

StepFun

step-1-32kStepFunReleased Jan 1, 202532,768 token context windowIn $2.05 · Out $9.59

ReasoningTool callingTemp controls

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Detail Provider

StepFun

step-2-16kStepFunReleased Jan 1, 202516,384 token context windowIn $5.21 · Out $16.44

ReasoningTool callingTemp controls

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Detail Provider

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