Stepfun
Step 3.7 Flash
StepFun’s flagship multimodal reasoning model. Powered by a 198B-parameter / 11B-activation sparse MoE architecture, with native support for image and video understanding.
StepFun researchModel Snapshot
TypeLanguage
ReleaseMay 28, 2026
Context256,000
Tagsimplicit-caching, reasoning, tool-use, vision
Overall
Rank #148 across 589
30.3
Coding
Rank #129 across 252
39.6
Blended Price
No rank
n/a
Strength Profile
Percentile score by analysis domain.
Not enough comparable domain data for this model.
Benchmark Percentiles
Higher bars mean stronger relative placement.
Model Details
Runtime
Max Output256,000
Streaming speed is not measured for this model yet.
Pricing
Blended-
Input-
Output-
Catalog$0.200/M in / $1.15/M out
Metadata
Modalities
All Benchmarks
| Metric | Domain | Value | Rank |
|---|---|---|---|
| Artificial Analysis Intelligence Index | overall | 30.3 | #148 |
| Artificial Analysis Coding Index | coding | 39.6 | #129 |