Apex Shortlist (MathArena IRT estimate)
Math
MathArena estimated accuracy combines measured answers with item-response-theory predictions for unanswered questions. Retained as a diagnostic, separate from observed accuracy and excluded from the capability fit.
Top models (higher is better)
| Model | Score |
|---|---|
| Qwen3.5-4B | 32.5 |
| Qwen3.5-2B | 8.0 |