Step 3.5 Flash 2603 — benchmark results
Provider: StepFun. Released 2026-03-01. Access: API.
Unified ELO 1701 ± 29, rank #279 of 1841 rated models, from 33 benchmark results.
Strongest benchmark results
| Benchmark | Score | Metric | Percentile |
|---|---|---|---|
| AA Humanity's Last Exam | 22.57 | Accuracy (%) | 81.9 |
| AA TAU-2 Bench | 87.43 | Accuracy (%) | 81.4 |
| AA IFBench | 66.53 | Accuracy (%) | 78.9 |
| AA CritPt | 2.29 | Accuracy (%) | 77.5 |
| AA Terminal-Bench Hard | 32.58 | Accuracy (%) | 76.6 |
| AA GPQA Diamond | 82.63 | Accuracy (%) | 76.5 |
| AA Omniscience - Software Engineering (SWE) - Rust | 62 | Accuracy (%) | 74.1 |
| AA Omniscience - Science, Engineering & Mathematics | 34.4 | Accuracy (%) | 73.5 |
| AA Omniscience - Software Engineering (SWE) - Kotlin | 30 | Accuracy (%) | 73.4 |
| Artificial Analysis Intelligence Index | 26 | Intelligence Index | 69.6 |
| AA Omniscience - Humanities & Social Sciences | 25.7 | Accuracy (%) | 68.6 |
| AA Omniscience - Business | 21.5 | Accuracy (%) | 68.5 |
Interactive version: theaggregate.ai/model?slug=step-3-5-flash-2603 · How It Works · Data refreshed daily, snapshot 2026-07-25.