StepFun
What its model cards measure
Tall ticks are StepFun model cards that list the benchmark in their headline table. Gray dots are cards that leave it out. Rows are the benchmarks the lab listed most, at least twice each, in the order it started using them.
Model cards
| Date | Model | Document | Benchmarks |
|---|---|---|---|
| 20 Sep 2026 | Step 5 Preview | Step 5 Preview: Advancing the Pareto Frontier (model page) | 33 |
| 29 May 2026 | Step 3.7 Flash | Step 3.7 Flash: The new frontier is agent efficiency (blog) | 20 |
| 2 Feb 2026 | Step 3.5 Flash | Step 3.5 Flash model card (Hugging Face) | 14 |
| 13 Jan 2026 | STEP3-VL-10B | STEP3-VL-10B model card (Hugging Face) | 18 |
| 31 Jul 2025 | Step 3 | Step3 model card (Hugging Face) | 11 |
Every StepFun model
- Step 5 Preview Sep 2026
- Step 3.7 Flash May 2026
- Step 3.5 Flash Feb 2026
- STEP3-VL-10B Jan 2026
- Step 3 Jul 2025