GPT-5.6 (xHigh) — benchmark results
Provider: OpenAI. Access: API.
Unified ELO 2050 ± 52, rank #13 of 1723 rated models, from 40 benchmark results.
Strongest benchmark results
| Benchmark | Score | Metric | Percentile |
|---|---|---|---|
| AA Omniscience - Software Engineering (SWE) - Kotlin | 94 | Accuracy (%) | 100 |
| PM-LLM-Benchmark | 40.2 | Score | 100 |
| AA Omniscience - Software Engineering (SWE) - Go | 86 | Accuracy (%) | 99.8 |
| Artificial Analysis Intelligence Index | 57.65 | Intelligence Index | 99.6 |
| AA Omniscience - Humanities & Social Sciences | 57.7 | Accuracy (%) | 99.5 |
| AA Terminal-Bench Hard | 62.88 | Accuracy (%) | 99.5 |
| AA-Omniscience Accuracy | 57.97 | Accuracy (%) | 99.5 |
| AA CritPt | 28.57 | Accuracy (%) | 99.4 |
| AA Omniscience - Software Engineering (SWE) - TypeScript | 91.11 | Accuracy (%) | 99.4 |
| AA Humanity's Last Exam | 44.72 | Accuracy (%) | 99.3 |
| AA Omniscience - Business | 49.6 | Accuracy (%) | 99.3 |
| AA Omniscience - Health | 49.7 | Accuracy (%) | 99.3 |
Interactive version: aibenchmarks.dev/model?slug=gpt-5-6-xhigh · How the rankings work · Data refreshed daily, snapshot 2026-07-10.