Comment by scrlk

Benchmarks from page 4 of the model card:

    | Benchmark             | 3 Pro     | 2.5 Pro | Sonnet 4.5 | GPT-5.1   |
    |-----------------------|-----------|---------|------------|-----------|
    | Humanity's Last Exam  | 37.5%     | 21.6%   | 13.7%      | 26.5%     |
    | ARC-AGI-2             | 31.1%     | 4.9%    | 13.6%      | 17.6%     |
    | GPQA Diamond          | 91.9%     | 86.4%   | 83.4%      | 88.1%     |
    | AIME 2025             |           |         |            |           |
    |   (no tools)          | 95.0%     | 88.0%   | 87.0%      | 94.0%     |
    |   (code execution)    | 100%      | -       | 100%       | -         |
    | MathArena Apex        | 23.4%     | 0.5%    | 1.6%       | 1.0%      |
    | MMMU-Pro              | 81.0%     | 68.0%   | 68.0%      | 80.8%     |
    | ScreenSpot-Pro        | 72.7%     | 11.4%   | 36.2%      | 3.5%      |
    | CharXiv Reasoning     | 81.4%     | 69.6%   | 68.5%      | 69.5%     |
    | OmniDocBench 1.5      | 0.115     | 0.145   | 0.145      | 0.147     |
    | Video-MMMU            | 87.6%     | 83.6%   | 77.8%      | 80.4%     |
    | LiveCodeBench Pro     | 2,439     | 1,775   | 1,418      | 2,243     |
    | Terminal-Bench 2.0    | 54.2%     | 32.6%   | 42.8%      | 47.6%     |
    | SWE-Bench Verified    | 76.2%     | 59.6%   | 77.2%      | 76.3%     |
    | t2-bench              | 85.4%     | 54.9%   | 84.7%      | 80.2%     |
    | Vending-Bench 2       | $5,478.16 | $573.64 | $3,838.74  | $1,473.43 |
    | FACTS Benchmark Suite | 70.5%     | 63.4%   | 50.4%      | 50.8%     |
    | SimpleQA Verified     | 72.1%     | 54.5%   | 29.3%      | 34.9%     |
    | MMLU                  | 91.8%     | 89.5%   | 89.1%      | 91.0%     |
    | Global PIQA           | 93.4%     | 91.5%   | 90.1%      | 90.9%     |
    | MRCR v2 (8-needle)    |           |         |            |           |
    |   (128k avg)          | 77.0%     | 58.0%   | 47.1%      | 61.6%     |
    |   (1M pointwise)      | 26.3%     | 16.4%   | n/s        | n/s       |

n/s = not supported

EDIT: formatting, hopefully a bit more mobile friendly