Muse Spark 1.3 vs Nemotron 3 Ultra 550B A55B
Muse Spark 1.3 
Nemotron 3 Ultra 550B A55B Verdict
- Muse Spark 1.3 leads on quality: 68.3 vs 58.5.
- Muse Spark 1.3 is stronger in composite, knowledge, long context.
- Nemotron 3 Ultra 550B A55B is stronger in agents & tools, coding, instruction following.
- Nemotron 3 Ultra 550B A55B is 2.0× cheaper ($1.00 vs $2.00 per 1M blended).
| Metric | Muse Spark 1.3 | Nemotron 3 Ultra 550B A55B |
|---|---|---|
| BenchLeader Index | 68.3 | 58.5 |
| Composite score | 90.3 | 43.9 |
| Knowledge score | 79.1 | 59.6 |
| Long context score | 68.2 | 66.3 |
| Agents & tools score | – | 52.8 |
| Coding score | – | 62.3 |
| Instruction following score | – | 78.9 |
| Blended price $/M | $2.00 | $1.00 |
| Output speed | 241 tok/s | 203 tok/s |
| Time to first answer | 30.5 s | 13.5 s |
| Context window | 1.0M | 1M |
| LiveBench | – | 67.4% |
| LiveBench Reasoning | – | 74.7% |
| LiveBench Coding | – | 70.7% |
| LiveBench Agentic Coding | – | 38.7% |
| LiveBench Mathematics | – | 88.7% |
| LiveBench Data Analysis | – | 54.5% |
| LiveBench Language | – | 70.8% |
| AA Intelligence Index | 48.2 | 23.4 |
| IFBench | – | 81.4% |
| AA-LCR | 83.0% | 79.3% |
| AA-Omniscience | 25 | -0.4 |
| Terminal-Bench Hard | – | 36.4% |
| GPQA Diamond (AA) | 93.5% | 86.7% |
| Humanity's Last Exam (AA) | 48.7% | 28.4% |
| SciCode (AA) | 58.8% | 40.3% |
| τ²-Bench Telecom (AA) | – | 83.3% |
| LiveCodeBench | – | 86.0% |
| MMLU-Pro | – | 85.8% |
| LegalBench | – | 82.1% |
| CorpFin | – | 65.5% |
| TaxEval | – | 73.1% |
| Terminal-Bench 2.1 (Vals) | – | 50.9% |
| SWE-bench (Vals) | – | 69.0% |
| GPQA Diamond (Vals) | – | 86.1% |
| Vals Index | – | 27.4 |
| PRBench Finance | 59.5% | – |
| PRBench Legal | 61.6% | – |
Data as of 2026-09-14. Best configuration of each model; every score links to its source on the model pages.
Muse Spark 1.3 vs Nemotron 3 Ultra 550B A55B: questions
- Is Muse Spark 1.3 better than Nemotron 3 Ultra 550B A55B?
- Muse Spark 1.3 leads on quality: 68.3 vs 58.5. The BenchLeader Index combines every independent quality benchmark; Muse Spark 1.3 is ahead overall as of 2026-09-14, but check the category scores for your use.
- Which is cheaper, Muse Spark 1.3 or Nemotron 3 Ultra 550B A55B?
- Nemotron 3 Ultra 550B A55B is cheaper: $1.00 against $2.00 per million tokens, blended at three input tokens per output token.
- Which is faster, Muse Spark 1.3 or Nemotron 3 Ultra 550B A55B?
- Muse Spark 1.3 streams faster: 241 against 203 output tokens per second.
- Which has the larger context window?
- Muse Spark 1.3 accepts more context: 1.0M against 1M tokens.