Step 5 Preview is StepFun's flagship model for agentic work, built on a sparse Mixture-of-Experts architecture (27B active / 600B total parameters). It performs strongly in software engineering and professional...
17 providers
Model catalog
Models
Every model in the catalog with source-linked pricing, context limits, provider availability, and published benchmark results.
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...
21 providers
| Model | Creator | Inputs | Context | Input | Output | Released | Compare |
|---|---|---|---|---|---|---|---|
| StepFun: Step 5 Previewstepfun/step-5-preview | StepFun |
1M | $1 | $2.7 | 2026-09-16 | ||
| StepFun: Step 3.7 Flashstepfun/step-3.7-flash | StepFun |
256K | $0.2 | $1.15 | 2026-05-29 |