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Step 5 Preview

ECI
N/A
StepFun
Sep. 18, 2026
Closed weights

Step 5 Preview is a closed-weights model from StepFun, released September 18, 2026.

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1570180017581674

Model metadata

General
OrganizationStepFun
Release dateSep. 18, 2026
Model accessibilityClosed weights
CountryChina
Knowledge cutoffUnknown
Provider notesplatform.stepfun.ai
Pricing
Input price$1 / 1M tokens
Output price$2.70 / 1M tokens
Training
Parameters6.0e11
Training computeUnknown
Training hardwareUnknown
Training timeUnknown
Training dataset sizeUnknown