StepFun

Chinese AI company developing Step series models

1 modelAverage score: 0.8CN Website

StepFun Models

Feb 1, 2026196B parametersMM

StepFun Model Comparisons

LongCat-Flash-Thinking-2601 vs Step-3.5-Flash LongCat-Flash-Lite vs Step-3.5-Flash Gemini 3.1 Pro vs Step-3.5-Flash GPT-5.4 nano vs Step-3.5-Flash K-EXAONE-236B-A23B vs Step-3.5-Flash Claude Opus 4.6 vs Step-3.5-Flash

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StepFun model catalog updated in 2026. See model comparisons and best models for coding.