OpenAI
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...
Introducing GPT-5.5Rank #85 across 566
Rank #58 across 222
Rank #346 across 371
Percentile score by analysis domain.
* Cost is inverted: lower input, output, and blended prices rank higher.
Higher bars mean stronger relative placement.
| Metric | Domain | Value | Rank |
|---|---|---|---|
| Artificial Analysis Intelligence Index | overall | 35.4 | #85 |
| Artificial Analysis Coding Index | coding | 56.5 | #58 |
| GPQA | reasoning | 76.8% | #180 |
| Humanity's Last Exam | reasoning | 12.6% | #163 |
| SciCode |
| coding, reasoning |
| 47.3% |
| #54 |
| Output Speed | speed | 57.4 tok/s | #233 |
| Time to First Token | speed | 0.95s | #125 |
| Blended Price | cost | $11.25/M | #346 |
| Input Price | cost | $5.00/M | #337 |
| Output Price | cost | $30.00/M | #346 |
| Value Index | cost, overall | 3.1 | #331 |