StepFun: Step 3.7 Flash
Step 3.7 Flash is StepFun's latest high-efficiency multimodal Mixture-of-Experts model. It pairs a 196B-parameter language backbone with a vision encoder for native image and video understanding, activating roughly 11B parameters...
Everything else
| Max output | 256K |
|---|---|
| Input / 1M | $0.2 |
| Output / 1M | $1.15 |
| Cache read / 1M | $0.04 |
| Cache write / 1M | — |
| 1M in + 1M out | $1.35 |
| Takes | text, image, video |
| Returns | text |
| Tools | yes |
| Reasoning | always on · high, medium, low |
| Open weights | yes |
| Released | 2026-05-28 |
| Knowledge cutoff | — |
| Retires | — |
| Catalog id | stepfun/step-3.7-flash |
Using it
In 00, this model is picked per agent — and per tier, so the model that answers your customers need not be the one that writes your code. Get 00.