Open-Source StepFun Models
The best open-weight StepFun model is Step 3.7 Flash (30.3 intelligence) — downloadable from Hugging Face and self-hostable. Step 3.5 Flash (26.0) is next.
The best open-source AI models — open-weight, downloadable from Hugging Face and self-hostable — ranked by intelligence. Open-source alternatives to proprietary frontier models.
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step-3.7-flashReasoningToolsJSON+130.3 intel · $0.200/M · 262K ctx30.3Intelligence - 2step-3.5-flashReasoningTools26.0 intel · $0.100/M · 262K ctx26.0Intelligence
Frequently asked
What is the best open-source StepFun model?
The best open-weight StepFun model is Step 3.7 Flash (30.3 intelligence) — downloadable from Hugging Face and self-hostable. Step 3.5 Flash (26.0) is next.
What's a good alternative to Step 3.7 Flash?
Step 3.5 Flash (26.0) is the closest alternative on this metric. See the full ranking above for the tradeoffs.
How many StepFun models are there?
modelgrep tracks 2 StepFun models with live benchmarks, speed, latency and per-provider pricing, led on intelligence by Step 3.7 Flash. 2 of them qualify for this ranking.