StepFun Blog company blog
Step 3.5 Flash – Open-source foundation model, supports deep reasoning at speed
Scores represent the mean of the following eight benchmarks listed below, excluding xbench-DeepSearch. The Step 3.5 Flash score is derived under standard settings (i.e., $w/o$ Parallel Thinking).
- Points
- 231
- HN comments
- 91
- Submissions
- 1
- Cited by
- 0 commenters
AI & Machine LearningOpen Source2026
On Hacker News
| Submitted | Title on HN | Points | Comments |
|---|---|---|---|
| Feb 19, 2026 | Step 3.5 Flash – Open-source foundation model, supports deep reasoning at speed by kristianp | 231 | 91 |
