Across 18 shared benchmarks, Kimi K2 Base scores higher on 6 and NVIDIA-Nemotron-3-Ultra-550B-A55B-Base-BF16 on 12. The widest gap is MBPP-Sanitized, where NVIDIA-Nemotron-3-Ultra-550B-A55B-Base-BF16 scores 86 against 72.1.
| Benchmark | Kimi K2 Base | NVIDIA-Nemotron-3-Ultra-550B-A55B-Base-BF16 |
|---|---|---|
| AGIEval-En | 72.5 | 78.7 |
| arc_challenge | 96.7 | 97.3 |
| GPQA Diamond | 48.1 | 50 |
| GSM8K | 93.5 | 88.1 |
| hellaswag | 94.6 | 90.5 |
| humaneval | 84.8 | 83.8 |
| MATH | 71.2 | 82 |
| MBPP-Sanitized | 72.1 | 86 |
| mgsm | 85.2 | 87.7 |
| mmlu | 88.2 | 89.1 |
| MMLU Global Lite | 85.6 | 90.1 |
| MMLU-Pro | 69.2 | 79.1 |
| OpenBookQA | 50.8 | 48.6 |
| PIQA | 85.5 | 83.8 |
| RACE | 92 | 92.2 |
| RULER 128K | 88.6 | 92.5 |
| RULER 64K | 93.8 | 95.3 |
| winogrande | 85.3 | 79.3 |
Best tracked score per model per benchmark (default configuration; source-attributed). ↓ marks lower-is-better metrics. Open either model for its full surface, provenance and pricing.