Neura Intelligence Index
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GPT-5.5 Pro
🇺🇸OpenAI2mo
Neura Index
79.5
Rank #24—
lowCategory Profile
Benchmark Scores (3)
reasoning
| Benchmark | Score | Source |
|---|---|---|
| Humanity's Last Exam | 57.2 | verified |
agent
| Benchmark | Score | Source |
|---|---|---|
| BrowseComp | 90.1 | verified |
math
| Benchmark | Score | Source |
|---|---|---|
| FrontierMath | 39.6 | verified |
Performance History
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Frequently Asked Questions about GPT-5.5 Pro
What is GPT-5.5 Pro's Neura Intelligence Index score?▾
GPT-5.5 Pro by OpenAI scores 79.5 out of 100 on the Neura Intelligence Index, ranking #24 among tracked AI models. This composite score is computed from 3 individual benchmarks across coding, math, reasoning, and language categories.
Is GPT-5.5 Pro open source?▾
No, GPT-5.5 Pro is a proprietary model by OpenAI. It is only accessible via their API.
What benchmark does GPT-5.5 Pro perform best on?▾
GPT-5.5 Pro achieves its highest score on BrowseComp with a score of 90.1%. This benchmark evaluates web browsing comprehension — finding specific information across complex web pages.