GPT-5.5 Instant (June 2026): benchmark results
Provider: OpenAI. Released 2026-04-23. Access: API.
Unified ELO 1631 ± 1, rank #315 of 1761 rated models, from 17 benchmark results.
Strongest benchmark results
| Benchmark | Score | Metric | Percentile |
|---|---|---|---|
| AA Omniscience - Software Engineering (SWE) | 75.5 | Accuracy (%) | 94.2 |
| AA Omniscience - Health | 43.8 | Accuracy (%) | 91.8 |
| AA-Omniscience Accuracy | 44.42 | Accuracy (%) | 87.3 |
| AA Omniscience | 3.7 | Score | 84.6 |
| AA Omniscience - Law | 34.3 | Accuracy (%) | 83.7 |
| AA Omniscience - Business | 33.4 | Accuracy (%) | 83.2 |
| AA Omniscience - Humanities & Social Sciences | 37.4 | Accuracy (%) | 82.7 |
| AA Omniscience - Science, Engineering & Mathematics | 42.1 | Accuracy (%) | 81.2 |
| AA Humanity's Last Exam | 19.93 | Accuracy (%) | 72.5 |
| AA GPQA Diamond | 82.32 | Accuracy (%) | 70.8 |
| Artificial Analysis Intelligence Index | 21.57 | Intelligence Index | 67.2 |
| AA Long Context Reasoning | 70 | Accuracy (%) | 67.1 |
Interactive version: theaggregate.ai/model?slug=gpt-5-5-instant-june-2026 · How It Works · Data refreshed daily, snapshot 2026-09-05.