OpenAI: GPT-5.5
openai/gpt-5.5
Context: 1,050,000In: $5.00/1MOut: $30.00/1MUpdated 2026-08-05
GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks. It features a 1M+ token...
Intelligence
54.8
Coding
74.9
Agentic
44.9
Metric profile
Trend over time
Intelligence
54.8
Coding
74.9
Agentic
44.9
Only 1 snapshot so far (data refreshes daily) — the trend line appears after the 2nd snapshot.
Classic evals (curated from model cards)
OpenAI GPT — manually maintained, may lag releases
MMLU-Pro
79.6%
GPQA Diamond
81.5%
HumanEval
96.8%
MATH-500
93%
Design Arena (ELO by category)
| Category | ELO | Win rate | Rank |
|---|---|---|---|
| gamedev | 1339 | 60.7% | #4 |
| uicomponent | 1293 | 56.5% | #20 |
| asciiart | 1288 | 60.5% | #9 |
| codecategories | 1286 | 55.7% | #21 |
| dataviz | 1281 | 56.4% | #17 |
| website | 1280 | 55.1% | #22 |
| svg | 1278 | 58.1% | #4 |
| 3d | 1249 | 52% | #31 |
| godotgamedev | 1211 | 52.4% | #10 |
| mobileapps | 1210 | 51.7% | #13 |
| androidnative | 1198 | 50.8% | #15 |
| agenticgamedev | 1186 | 51.6% | #12 |
| webapps | 1165 | 42.8% | #24 |
| pptxslides | 1157 | 45.3% | #7 |
| agenticslides(python-pptx) | 1155 | 45.2% | #7 |
| python-pptxslides | 1152 | 43.3% | #16 |
| agenticslides | 1150 | 43.5% | #7 |
| fullstack | 1128 | 43.2% | #19 |
| htmlslides | 1090 | 34.8% | #19 |
| agentichtmlslides | 1084 | 34.2% | #9 |
| agenticslides(html) | 1077 | 33.2% | #9 |