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Step-3.5-Flash

byStepFunStepFun· 01 Feb 2026
General purpose

StepFun really stepped up its game (no pun intended), releasing a 196B-A11B MoE with strong metrics across the board. It is especially strong in math benchmarks, beating out models that are several times larger than it.

Specs
Params196B (11B Active)
LicenseApache-2.0
Tags
modelsmodels/llmsmodels/llms/reasoningmultilingualartifacts/19curated/our-picks
Resources
Hugging Face — stepfun-ai/Step-3.5-FlashPaper / tech reportAppeared in Artifacts Log #19
Capability · Artificial Analysis
AA Index
26.0
Frontier lag
11.2 mo
claude-3-7-sonnet-thinking
24 Feb 2025
Adoption · Interconnects
RAM score
—
Hugging Face Downloads
175.3K
last 30d
1.2M
all time
HF Likes
825

Relative Adoption Metric contextualizes downloads against the model's size bucket.

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