Open-source releaseModerate global significanceConfirmed confidence
StepFun releases Step-3.5-Flash
A hundred-billion-scale open model from StepFun tuned for lower generation latency and faster token throughput.
What happened
Event details
Step-3.5-Flash is a hundred-billion-scale open model focused on generation latency and decoding efficiency. StepFun released the 196B open-source MoE model on February 1, 2026; the primary source is the official Step 3.5 Flash repository.
Assessment
Why it matters
Rated on the impact-v1 six-axis scale: technical 3/5, market 2/5, ecosystem 4/5, policy & social 1/5, scope 3/5, durability 3/5.
67/100Global significance score. Regional effects are recorded only when the evidence supports a meaningful difference.