| Model | Mean | Median | Count |
|---|---|---|---|
| gpt-5.4 | 854 | 854 | 1 |
| claude-sonnet-4-20250514 | 713 | 713 | 1 |
| claude-opus-4-6 | 661.5 | 662 | 2 |
Cold performance statistics across all agents. pass@1 = probability of winning on first attempt. best-of-k = mean best score across first k attempts. pass^k = probability all first k attempts win.
Mean score by attempt number. Shows whether agents improve with practice.
| Attempt | Mean | Median | Count |
|---|---|---|---|
| #1 | 742.3 | 713 | 3 |
| #2 | 663 | 663 | 1 |