GPT-5.5 Instant (June 2026): benchmark results
Provider: OpenAI. Released 2026-04-23. Access: API.
Aggregate Rating 1831 ± 42, rank #43 of 1657 rated models, from 64 benchmark results.
Strongest benchmark results
| Benchmark | Score | Metric | Percentile |
|---|---|---|---|
| AA-Omniscience Index - Software Engineering (SWE) - Julia | 64 | Omniscience Index | 94 |
| AA-Omniscience Index - Software Engineering (SWE) - Python | 71.5 | Omniscience Index | 92.7 |
| AA-Omniscience Index - Software Engineering (SWE) - TypeScript | 71.11 | Omniscience Index | 92.4 |
| MLCR-AA | 31.67 | Overall Score (%) | 92.4 |
| AA-Omniscience Index - Software Engineering (SWE) - Kotlin | 54 | Omniscience Index | 91.3 |
| AA-Omniscience Index - Software Engineering (SWE) - Java | 30 | Omniscience Index | 90.8 |
| AA-Omniscience Index - Software Engineering (SWE) | 54.4 | Omniscience Index | 90.2 |
| AA-Omniscience Index - Software Engineering (SWE) - Go | 58 | Omniscience Index | 88.6 |
| AA-Omniscience Index - Software Engineering (SWE) - HTML | 60 | Omniscience Index | 88.4 |
| MLCR-AA - Accuracy | 81.11 | Accuracy (%) | 86.6 |
| AA-Omniscience Index - Software Engineering (SWE) - JavaScript | 51.82 | Omniscience Index | 86.2 |
| AA-Omniscience Index - Software Engineering (SWE) - PHP | 50 | Omniscience Index | 85.7 |
Interactive version: theaggregate.ai/model?slug=gpt-5-5-instant-june-2026 · How It Works · Data refreshed daily, snapshot 2026-10-22.