OpenAI
GPT-5.6 Sol is the flagship model in OpenAI's GPT-5.6 series. It is suited for complex reasoning, coding, and agentic workflows, and is particularly strong at command-line and multi-step coding tasks...
Introducing GPT-5Rank #2 across 566
Rank #2 across 222
Rank #351 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 | 58.9 | #2 |
| Artificial Analysis Coding Index | coding | 77.4 | #2 |
| LiveBench Mathematics | math | 96.2% | #1 |
| GPQA | reasoning | 94.1% | #1 |
| Humanity's Last Exam |
| reasoning |
| 47.2% |
| #2 |
| SciCode | coding, reasoning | 56.1% | #7 |
| Output Speed | speed | 67.4 tok/s | #205 |
| Time to First Token | speed | 92.43s | #309 |
| Blended Price | cost | $11.25/M | #351 |
| Input Price | cost | $5.00/M | #342 |
| Output Price | cost | $30.00/M | #351 |
| Value Index | cost, overall | 5.2 | #303 |