I don't like to divulge tests, but one of them is a chess puzzle.
> would be great if you could add GPT 5.6 Sol XHigh and Fable 5 High as well
I would like too, but I avoided them for several reasons:
1) Cost - this is a hobby project, those models would cost tens of dollars for each benchmark run, multiply this by tens or hundreds of models and ...
2) Time - the high models are already taking a really long answer to respond (5-10minutes per question). I run each question with 3 repeats (run the same test three times), so it would take 30 minutes per test. If I change my tests, methodology, or add a new test, it would take a really long time to run the benchmark. Also, I like having results immediately when a new model is released, now I can post within 30 minutes of a model's release the benchmark results.
3) High reasoning usually does WORSE on most tests - if you look at the leaderboard, it's sometimes counter-intuitive, but models with high or max reasoning usually do worse than medium and low. This is because the questions are quite targeted/direct, and the models overthink the question and miss the solution. Or the long thinking context makes them perform poorly. The generation tasks (SVGs/HTML animation) are usually better with longer reasoning, but short code fixes, trivia questions, puzzles, etc. are answered by low/med reasoning with more accuracy in general
Also, Fable is borderline un-testable, it refuses to answer many questions, so it scores poorly anyway.
Gemini scores 21/22 because it answers all tests, and it does them correctly, consistently. The only failed test is I think because it miscounted the lines in a file, when responding on which line the bug was in a code snippet.