AI models

StepFun (Global)step

stepaudio-2.5-asrStepFun (Global)Released Apr 24, 20260 token context window

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StepFun (China)step

stepaudio-2.5-asrStepFun (China)Released Apr 24, 20260 token context window

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StepFun (Global)step

stepaudio-2.5-ttsStepFun (Global)Released Apr 16, 20260 token context window

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StepFun (China)step

stepaudio-2.5-ttsStepFun (China)Released Apr 16, 20260 token context window

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StepFun (Global)step

step-tts-2StepFun (Global)Released Mar 1, 20260 token context window

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StepFun (China)step

step-tts-2StepFun (China)Released Mar 1, 20260 token context window

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SiliconFlow (China)step

stepfun-ai/Step-3.5-FlashSiliconFlow (China)Released Feb 11, 2026262,000 token context windowIn $0.10 · Out $0.30

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SiliconFlowstep

stepfun-ai/Step-3.5-FlashSiliconFlowReleased Feb 11, 2026262,000 token context windowIn $0.10 · Out $0.30

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