GPT-5.5 — benchmark results
OpenAI's standard GPT-5.5 model for general-purpose reasoning, coding, and writing. Provider: OpenAI. Released 2026-04-23. Access: API.
Unified ELO 1907 ± 10, rank #58 of 1776 rated models, from 746 benchmark results.
Strongest benchmark results
| Benchmark | Score | Metric | Percentile |
|---|---|---|---|
| AGC-Bench - arastories | 1.28 | Dataset z-score | 100 |
| AGC-Bench - brainteaser | 1.84 | Dataset z-score | 100 |
| AGC-Bench - liveideabench | 1.57 | Dataset z-score | 100 |
| AGC-Bench - newyorker_humor | 1.06 | Dataset z-score | 100 |
| AGC-Bench - showerthoughts | 1.6 | Dataset z-score | 100 |
| AI for Education Pedagogy | 92.1 | Accuracy (%) | 100 |
| AI for Education Pedagogy - Primary | 96.71 | Accuracy (%) | 100 |
| AI for Education Pedagogy - Secondary | 91.04 | Accuracy (%) | 100 |
| AI for Education SEND | 88.07 | Accuracy (%) | 100 |
| AI for Education Visual Maths | 89.87 | Accuracy (%) | 100 |
| AI for Education Visual Maths - Geometry | 88.46 | Accuracy (%) | 100 |
| AI for Education Visual Maths - Number and Operations | 83.78 | Accuracy (%) | 100 |
Interactive version: theaggregate.ai/model?slug=gpt-5-5 · How the rankings work · Data refreshed daily, snapshot 2026-07-22.