Step 3.5 Flash 2603: benchmark results
Provider: StepFun. Released 2026-03-01. Access: API.
Aggregate Rating 1591 ± 41, rank #739 of 2166 rated models, from 33 benchmark results.
Strongest benchmark results
| Benchmark | Score | Metric | Percentile |
|---|---|---|---|
| AA TAU-2 Bench | 87.43 | Accuracy (%) | 81.4 |
| Tau2-Bench Telecom | 87.43 | Success Rate (%) | 81.2 |
| AA IFBench | 66.53 | Accuracy (%) | 79 |
| AA Terminal-Bench Hard | 32.58 | Accuracy (%) | 76.6 |
| AA GPQA Diamond | 82.63 | Accuracy (%) | 71.3 |
| AA Humanity's Last Exam | 24.47 | Accuracy (%) | 70.9 |
| AA CritPt | 2.29 | Accuracy (%) | 63.2 |
| Artificial Analysis Intelligence Index | 16.96 | Intelligence Index | 60.5 |
| AA-Omniscience Accuracy | 24.62 | Accuracy (%) | 57.1 |
| AA Long Context Reasoning | 63 | Accuracy (%) | 51.9 |
| AA-Omniscience Index - Software Engineering (SWE) - Rust | 16 | Omniscience Index | 49.1 |
| AA-Omniscience Index - Software Engineering (SWE) - Kotlin | -36 | Omniscience Index | 47.7 |
Interactive version: theaggregate.ai/model?slug=step-3-5-flash-2603 · How It Works · Data refreshed daily, snapshot 2026-10-25.