OpenAI
GPT-5.5 (xhigh)
GPT-5.5 (xhigh) is an OpenAI GPT-5.5 profile in this benchmark snapshot, part of the newest GPT-5.5 generation described by OpenAI as its most capable model line for ChatGPT and Codex work. Use this page to compare its reasoning setting against sibling GPT-5.5 variants on intelligence, coding, speed, latency, and price.
Introducing GPT-5.5Model Snapshot
ReleaseApr 23, 2026
Overall
Rank #5 across 526
54.8
Coding
Rank #2 across 436
59.1
Blended Price
Rank #343 across 357
$11.25/M
Strength Profile
Percentile score by analysis domain.
* Cost is inverted: lower input, output, and blended prices rank higher.
Benchmark Percentiles
Higher bars mean stronger relative placement.
Model Details
Runtime
Output Speed69 tok/s
First Token60.72s
Max Outputn/a
Pricing
Blended$11.25/M
All Benchmarks
| Metric | Domain | Value | Rank |
|---|---|---|---|
| Artificial Analysis Intelligence Index | overall | 54.8 | #5 |
| Artificial Analysis Coding Index | coding | 59.1 | #2 |
| GPQA | reasoning | 93.5% | #2 |
| Humanity's Last Exam | reasoning | 44.3% | #4 |
| SciCode |