Step 3.5 Flash is StepFun's most capable open-source foundation model. Built on a sparse Mixture of Experts (MoE) architecture, it selectively activates only 11B of its 196B parameters per token....
In / out price$0.10/$0.30per 1M tokens
Context
262K tokens
Parameters
199.4BMoEmixture of experts
Modalities
→
Released
Jan 29, 2026
0 up · 0 downCompare with another model
Score history starts tracking today — check back tomorrow to see how this model moves.
Reviews (0)
Sign in to vote and write a review.
No reviews yet — be the first to review Step 3.5 Flash.