GPT-5.5 High
| Released | 2026-04-23 |
|---|---|
| Price per 1M | $5.00 in · $30.00 out |
| Overall score | 59.5 · rank 108 |
| Context window | 1,050,000 tokens |
| Provider | OpenAI |
| Weights | Proprietary |
| Configuration | High |
Scores
| Dimension | Score | Rank | Benchmarks |
|---|---|---|---|
| Overall: Balanced | 59.5 | 108 | 15 |
| Overall: Coding | 58.0 | 141 | 12 |
| Overall: Reasoning | 64.1 | 51 | 6 |
| Overall: Agentic work | 60.2 | 95 | 11 |
| Overall: Frontend | 53.2 | 177 | 5 |
| Coding | 58.4 | 121 | 3 |
| Agents | 60.0 | 73 | 2 |
| Reasoning | 64.1 | 59 | 6 |
| Frontend | 49.5 | 123 | 1 |
| General | 58.6 | 80 | 2 |
| Multimodal | 60.2 | 34 | 1 |
| Value vs price | +2.4 | 180 |
Evidence
Coding 58.4 ±3.1
| Benchmark | Result | Source | Date |
|---|---|---|---|
| MirrorCode | 10.0% | Epoch AI | 2026-08-10 |
| DeepSWE | 64.4% | Epoch AI | 2026-11-11 |
| SciCode | 56.1% | Epoch AI | 2026-11-11 |
Agents 60.0 ±3.0
| Benchmark | Result | Source | Date |
|---|---|---|---|
| Terminal-Bench 2.1 (Vals run) | 76.4% | Vals AI | 2026-10-01 |
| DeepResearch Bench | 54.0% | Epoch AI | 2026-11-11 |
Reasoning 64.1 ±1.8
| Benchmark | Result | Source | Date |
|---|---|---|---|
| Extended NYT Connections | 95.2% | Lech Mazur | 2026-11-10 |
| ARC-AGI-2 | 83.3% | Epoch AI | 2026-11-11 |
| ARC-AGI-2 (ARC Prize verified) | 83.3% | ARC Prize | 2026-11-11 |
| CritPt | 25.4% | Epoch AI | 2026-11-11 |
| ARC-AGI-1 (ARC Prize verified) | 94.5% | ARC Prize | 2026-11-11 |
| ARC-AGI-1 | 94.5% | Epoch AI | 2026-11-11 |
| ARC-AGI-3 | 0.4% | ARC Prize | 2026-11-11 |
| Mystery Game Puzzles | 52.0% | Epoch AI | 2026-07-27 |
Frontend 49.5 ±3.0
| Benchmark | Result | Source | Date |
|---|---|---|---|
| LMArena WebDev | 1,487 | LMArena | 2026-11-10 |
General 58.6 ±2.6
| Benchmark | Result | Source | Date |
|---|---|---|---|
| LLM Debate Benchmark | 1,520 | Lech Mazur | 2026-10-26 |
| LMArena Text | 1,481 | LMArena | 2026-11-09 |
Multimodal 60.2 ±4.1
| Benchmark | Result | Source | Date |
|---|---|---|---|
| LMArena Vision | 1,283 | LMArena | 2026-11-09 |
Names matched to this model
gpt-5-5-high