StepFun
Explore 4 StepFun models used in OpenCode including Step 5 Preview, Step 3.7 Flash, and Step 3.5 Flash 2603. Compare recent token usage, context windows, release dates, and model data.
Usage. Daily token volume.
| Date | Daily tokens | Unique Users |
|---|---|---|
| OCT 8 | 354B | 4.8K |
| OCT 9 | 1.2T | 13K |
| OCT 10 | 1.5T | 13K |
| OCT 11 | 1.2T | 13K |
| OCT 12 | 622B | 15K |
| OCT 13 | 675B | 14K |
| OCT 14 | 194B | 6.3K |
Models. Recent usage and limits.
| Models | Usage | Share | Context | Output | Release |
|---|---|---|---|---|---|
| Step 5 Preview | 5.7T | 100% | 1M | 1M | Sep 16, 2026 |
| Step 3.7 Flash | - | - | 256K | 256K | May 29, 2026 |
| Step 3.5 Flash 2603 | - | - | 256K | 256K | Apr 2, 2026 |
| Step 3.5 Flash | - | - | 256K | 256K | Jan 29, 2026 |
StepFun Model Comparisons. Model pairs from this lab.
Most-used lab pairStep 5 Preview vs Step 3.7 FlashStep 5 Preview·Step 3.7 FlashLab alternativeStep 5 Preview vs Step 3.5 Flash 2603Step 5 Preview·Step 3.5 Flash 2603Adjacent lab pairStep 3.7 Flash vs Step 3.5 Flash 2603Step 3.7 Flash·Step 3.5 Flash 2603Same lab pairStep 3.5 Flash 2603 vs Step 3.5 FlashStep 3.5 Flash 2603·Step 3.5 Flash