GPT-5.6 Sol Pro
GPT-5.6 Sol Pro ranks first on 2 of the 10 benchmarks it has scores on.
10
Benchmarks with a score
2
Ranked first, out of five or more models
3
In the top three
OpenAI Jul 2026
GPT-5.6 Sol Pro
Closed weights Flagship
No Epoch Capabilities Index score yet
- $OneMillion-Bench 32.2% #4 /13
- xbench-ScienceQA 71% #16 /29
- DTBench 93.3% #16 /178
Where it ranks
Its best score on each benchmark, and where that ranks among every model with a score there. We rank each model once, at its best setting.
Math and science
| Benchmark | Score | Rank | Source | |
|---|---|---|---|---|
| Leipzig Benchmark | 91% | #1 of 19 | Official leaderboard | |
| DTBench | 93.3% | #16 of 178 | Official leaderboard | |
| SimpleBench | 71.7% | #18 of 100 | Official leaderboard | |
| xbench-ScienceQA | 71% | #16 of 29 | Official leaderboard | |
| ForecastBench | 65.9 | #83 of 86 | Official leaderboard |
Professional work
| Benchmark | Score | Rank | Source | |
|---|---|---|---|---|
| prinzbench | 91.0 | #1 of 26 | Official leaderboard | |
| RadLE 2.0 | 665.0 | #3 of 12 | Official leaderboard | |
| $OneMillion-Bench | 32.2% | #4 of 13 | Official leaderboard |
Other
| Benchmark | Score | Rank | Source | |
|---|---|---|---|---|
| Conceptual Reasoning Index | 70.0 | #10 of 149 | Official leaderboard | |
| ACCoRD | 78.9 | #16 of 150 | Official leaderboard |