GPT-5.5 Pro High
| Released | 2026-04-23 |
|---|---|
| Price per 1M | $30.00 in · $180.00 out |
| Overall score | 63.4 (early, few results) |
| Context window | 1,050,000 tokens |
| Provider | OpenAI |
| Weights | Proprietary |
| Configuration | High |
Scores
| Dimension | Score | Rank | Benchmarks |
|---|---|---|---|
| Overall: Balanced | 63.4 | 5 | |
| Overall: Coding | 65.1 | 3 | |
| Overall: Reasoning | 63.2 | 5 | |
| Overall: Agentic work | 65.1 | 3 | |
| Reasoning | 65.1 | 3 | |
| Math | 60.8 | 2 | |
| Value vs price | +1.3 |
Evidence
Reasoning 65.1 ±3.5
| Benchmark | Result | Source | Date |
|---|---|---|---|
| SimpleBench | 76.9% | Epoch AI | 2026-11-11 |
| ARC-AGI-2 | 84.6% | Epoch AI | 2026-11-11 |
| ARC-AGI-1 (ARC Prize verified) | 96.5% | ARC Prize | 2026-11-11 |
| ARC-AGI-1 | 96.5% | Epoch AI | 2026-11-11 |
| ARC-AGI-2 (ARC Prize verified) | 84.6% | ARC Prize | 2026-11-11 |
Math 60.8 ±2.0
| Benchmark | Result | Source | Date |
|---|---|---|---|
| FrontierMath Tiers 1-3 (2025 set) | 52.4% | Epoch AI | 2026-04-23 |
| FrontierMath Tier 4 (2025 set) | 39.6% | Epoch AI | 2026-04-23 |
Names matched to this model
gpt-5-5-pro-high