Neura Intelligence Index
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GPT-5.5 Instant
🇺🇸OpenAI2mo
Context:400K tokens
Input:$5/1M
Output:$30/1M
Neura Index
70.9
Rank #63—
mediumCategory Profile
Benchmark Scores (4)
reasoning
| Benchmark | Score | Source |
|---|---|---|
| GPQA Diamond | 85.6 | verified |
math
| Benchmark | Score | Source |
|---|---|---|
| AIME 2025 | 81.2 | verified |
multimodal
| Benchmark | Score | Source |
|---|---|---|
| CharXiv Reasoning | 81.6 | verified |
Performance History
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Frequently Asked Questions about GPT-5.5 Instant
What is GPT-5.5 Instant's Neura Intelligence Index score?▾
GPT-5.5 Instant by OpenAI scores 70.9 out of 100 on the Neura Intelligence Index, ranking #63 among tracked AI models. This composite score is computed from 4 individual benchmarks across coding, math, reasoning, and language categories.
How much does GPT-5.5 Instant cost to use?▾
GPT-5.5 Instant costs $5/1M input tokens and $30/1M output tokens via API. At a typical 3:1 input-to-output ratio with 1M tokens/day usage, the estimated monthly cost is approximately $338.
Is GPT-5.5 Instant open source?▾
No, GPT-5.5 Instant is a proprietary model by OpenAI. It is only accessible via their API.
What is GPT-5.5 Instant's context window?▾
GPT-5.5 Instant supports a context window of 400K tokens, allowing it to process very long documents, codebases, and conversations in a single request.
What benchmark does GPT-5.5 Instant perform best on?▾
GPT-5.5 Instant achieves its highest score on GPQA Diamond with a score of 85.6%. This benchmark evaluates 448 graduate-level science questions (biology, chemistry, physics) designed to be hard for non-experts.