FoundationalASSIST - Difficulty Comparison: leaderboard
Metric: Accuracy (%; which of two problems is harder by IRT difficulty from the full response data, about 10,000 stratified pairs; chance 50). Source: arxiv.org. Saturation forecast: Around December 2026. 4 models tracked.
Top models
| # | Model | Score |
|---|---|---|
| 1 | GPT-OSS-120B | 68.6 |
| 2 | Llama 3.3 70B Instruct | 65.7 |
| 3 | Qwen 3 Next 80B A3B Instruct | 63.9 |
| 4 | Qwen 3 Next 80B A3B (Thinking) | 63.7 |
Interactive version: theaggregate.ai/benchmark?slug=foundationalassist-difficulty-comparison · How It Works · Data refreshed daily, snapshot 2026-09-26.