NVIDIA Nemotron Report JudgeBench - Reasoning: leaderboard

JudgeBench: the model acts as a judge and must tell the higher-quality response from the lower-quality one in each pair; the number is the percentage of pairs judged correctly on the reasoning pairs. From Table 6 of NVIDIA's Llama-Nemotron technical report, comparing LN-Super and LN-Ultra with o1-preview, o1-mini, o3-mini at low, medium and high effort, and DeepSeek-R1; the report does not state the reasoning mode used for its own models in this test.

Metric: Preference discrimination accuracy (%). Source: arxiv.org. Saturation forecast: Estimated already saturated. 8 models tracked.

Top models

#ModelScoreOverall rank
1O3 Mini (High)89.8#536 (O3 Mini)
2O3 Mini (Medium)86.73#536 (O3 Mini)
3DeepSeek R182.65#467
4Llama 3.1 Nemotron Ultra 253B v181.63#1027
5O1 Preview79.59#483
6O3 Mini (Low)69.39#536 (O3 Mini)
7O1 Mini62.24#761

No result here: #1 Claude Fable 5.2, #2 Gemini 4 Carbon, #5 Claude Opus 5.5.

Interactive version: theaggregate.ai/benchmark?slug=nvidia-nemotron-report-judgebench-reasoning · How It Works · Data refreshed daily, snapshot 2026-11-12.