Kimi K3 vs Nemotron 3 Ultra
Kimi K3 
Nemotron 3 Ultra Verdict
- Kimi K3 leads on quality: 66.5 vs 58.3.
- Kimi K3 is stronger in agents & tools, coding, composite, human preference, knowledge, long context, maths, multimodal.
- Nemotron 3 Ultra is stronger in instruction following.
- Nemotron 3 Ultra is 6.0× cheaper ($1.00 vs $6.00 per 1M blended).
- Nemotron 3 Ultra streams 4.1× faster (156 vs 38 tokens per second).
| Metric | Kimi K3 | Nemotron 3 Ultra |
|---|---|---|
| BenchLeader Index | 66.5 | 58.3 |
| Agents & tools score | 67.4 | 52.6 |
| Coding score | 65.0 | 62.3 |
| Composite score | 74.2 | 43.7 |
| Human preference score | 71.2 | – |
| Knowledge score | 68.2 | 59.5 |
| Long context score | 71.1 | 66.2 |
| Maths score | 78.1 | – |
| Multimodal score | 65.0 | – |
| Instruction following score | – | 78.3 |
| Blended price $/M | $6.00 | $1.00 |
| Output speed | 38 tok/s | 156 tok/s |
| Time to first answer | 56.3 s | 16.8 s |
| Context window | 1.0M | 1M |
| SciCode | 58.7% | – |
| APEX-Agents | 39.3% | – |
| FrontierCode | 44.2% | – |
| ProofBench | 87.0% | – |
| Epoch Capabilities Index | 157.6 | – |
| LiveBench | 79.2% | 67.4% |
| LiveBench Reasoning | 90.7% | 74.7% |
| LiveBench Coding | 81.5% | 70.7% |
| LiveBench Agentic Coding | 62.2% | 38.7% |
| LiveBench Mathematics | 84.4% | 88.7% |
| LiveBench Data Analysis | 78.7% | 54.5% |
| LiveBench Language | 85.5% | 70.8% |
| AA Intelligence Index | 43.8 | 23.4 |
| IFBench | – | 81.4% |
| AA-LCR | 88.7% | 79.3% |
| MMMU-Pro | 80.5% | – |
| AA-Omniscience | 19.7 | -0.4 |
| Terminal-Bench Hard | – | 36.4% |
| GPQA Diamond (AA) | 93.5% | 86.7% |
| Humanity's Last Exam (AA) | 46.9% | 28.4% |
| SciCode (AA) | 59.5% | 40.3% |
| τ²-Bench Telecom (AA) | – | 83.3% |
| LiveCodeBench | – | 86.0% |
| MMLU-Pro | – | 85.8% |
| LegalBench | 86.0% | 82.1% |
| CorpFin | 71.6% | 65.5% |
| TaxEval | 75.7% | 73.1% |
| Terminal-Bench 2.1 (Vals) | 80.9% | 50.9% |
| SWE-bench (Vals) | 93.4% | 69.0% |
| GPQA Diamond (Vals) | 92.9% | 86.1% |
| Vals Index | 57.8 | 27.4 |
| EQ-Bench 4 | 1339 | – |
Data as of 2026-09-10. Best configuration of each model; every score links to its source on the model pages.
Kimi K3 vs Nemotron 3 Ultra: questions
- Is Kimi K3 better than Nemotron 3 Ultra?
- Kimi K3 leads on quality: 66.5 vs 58.3. The BenchLeader Index combines every independent quality benchmark; Kimi K3 is ahead overall as of 2026-09-10, but check the category scores for your use.
- Is Kimi K3 better than Nemotron 3 Ultra for coding?
- Kimi K3 scores higher in coding (65 vs 62 on the category index, where 50 is average).
- Is Kimi K3 better than Nemotron 3 Ultra for agentic tasks?
- Kimi K3 scores higher in agentic tasks (67 vs 53 on the category index, where 50 is average).
- Which is cheaper, Kimi K3 or Nemotron 3 Ultra?
- Nemotron 3 Ultra is cheaper: $1.00 against $6.00 per million tokens, blended at three input tokens per output token.
- Which is faster, Kimi K3 or Nemotron 3 Ultra?
- Nemotron 3 Ultra streams faster: 156 against 38 output tokens per second.
- Which has the larger context window?
- Kimi K3 accepts more context: 1.0M against 1M tokens.