# Muse Spark 1.3 vs Nemotron 3 Ultra

> Side-by-side benchmark comparison for Muse Spark 1.3 and Nemotron 3 Ultra across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/muse-spark-1-3-vs-nemotron-3-ultra
- Last updated: October 17, 2026

- Shared sourced benchmarks: 4
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Muse Spark 1.3 leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Muse Spark 1.3 has the higher overall point estimate 73 to 46.58. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in reasoning, where the averages are 82.9 for Muse Spark 1.3 and 70.3 for Nemotron 3 Ultra.
- The biggest single benchmark swing is Terminal-Bench 2.1 in Agentic, with scores of 88.8% and 56.4%.
- Nemotron 3 Ultra is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | Muse Spark 1.3 | Nemotron 3 Ultra |
|----------|----------|----------|
| Creator | Meta | NVIDIA |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1M |
| Overall Score | null | 46.58 |
| Benchmarks Covered | 20 | 25 |
| Pricing (input/output) | $1.25 / $4.25 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Not comparable
- Muse Spark 1.3 public-lane score: Coming soon
- Nemotron 3 Ultra public-lane score: 27.7 (Supported · #98/128)

| Benchmark | Muse Spark 1.3 | Nemotron 3 Ultra | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 88.8% | 56.4% | Muse Spark 1.3 |
| JobBench | 64.9% | Coming soon | Coming soon |
| OSWorld 2.0 | 66.9% | Coming soon | Coming soon |
| DeepSearchQA | 89.4% | Coming soon | Coming soon |
| AutomationBench | 49.4% | Coming soon | Coming soon |
| ApprenticeBench | 19% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 72.3% | 50.9% | Muse Spark 1.3 |
| CWE-bench v1 | 55.0% | Coming soon | Coming soon |
| MazeBench | 0% | 0% | Tie |
| PinchBench | Coming soon | 90.0% | Coming soon |
| BrowseComp | Coming soon | 44.4% | Coming soon |
| τ³-bench results | Coming soon | 70.9% | Coming soon |
| HLE w/ tools | Coming soon | 37.4% | Coming soon |

### Coding

- Winner: Not comparable
- Muse Spark 1.3 public-lane score: Coming soon
- Nemotron 3 Ultra public-lane score: 21.7 (Supported · #116/150)

| Benchmark | Muse Spark 1.3 | Nemotron 3 Ultra | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 88.8% | 56.4% | Muse Spark 1.3 |
| DeepSWE | 75.4% | Coming soon | Coming soon |
| SWE-Atlas Codebase QnA | 59.4% | Coming soon | Coming soon |
| CursorBench 4.0 | 41.6% | Coming soon | Coming soon |
| Bug Hunt Bench | 32.2 fixes | Coming soon | Coming soon |
| FrontierSWE v2 | 25.8% | Coming soon | Coming soon |
| SWE-bench Verified | Coming soon | 71.9% | Coming soon |
| SWE Multilingual | Coming soon | 67.7% | Coming soon |
| LiveCodeBench v6 | Coming soon | 89.0% | Coming soon |
| SciCode | Coming soon | 44.6% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 86.0% | Coming soon |
| SWE-bench (Vals) | Coming soon | 69.0% | Coming soon |

### Reasoning

- Winner: Not comparable
- Muse Spark 1.3 public-lane score: 82.9 (#6/28)
- Nemotron 3 Ultra public-lane score: 70.3 (Unranked · 1 rankable row)

| Benchmark | Muse Spark 1.3 | Nemotron 3 Ultra | Winner |
|-----------|-----------|-----------|--------|
| MRCR v2 256K-512K | 98.5% | Coming soon | Coming soon |
| MRCR v2 512K-1M | 98.1% | Coming soon | Coming soon |
| CritPt | Coming soon | 3.1% | Coming soon |
| LongBench v2 | Coming soon | 61.9% | Coming soon |

### Knowledge

- Winner: Not comparable
- Muse Spark 1.3 public-lane score: Coming soon
- Nemotron 3 Ultra public-lane score: 50 (Estimated · #81/184)

| Benchmark | Muse Spark 1.3 | Nemotron 3 Ultra | Winner |
|-----------|-----------|-----------|--------|
| GPQA | Coming soon | 87% | Coming soon |
| GPQA-D | Coming soon | 87.0% | Coming soon |
| HLE | Coming soon | 26.7% | Coming soon |
| HLE w/o tools | Coming soon | 26.7% | Coming soon |
| MMLU-Pro | Coming soon | 86.8% | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 86.1% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 85.8% | Coming soon |

### Multilingual

- Winner: Not comparable
- Muse Spark 1.3 public-lane score: Coming soon
- Nemotron 3 Ultra public-lane score: 89.2 (#7/17)

| Benchmark | Muse Spark 1.3 | Nemotron 3 Ultra | Winner |
|-----------|-----------|-----------|--------|
| MMLU-ProX | Coming soon | 83% | Coming soon |

### Instruction Following

- Winner: Not comparable
- Muse Spark 1.3 public-lane score: Coming soon
- Nemotron 3 Ultra public-lane score: 92.1 (#20/148)

| Benchmark | Muse Spark 1.3 | Nemotron 3 Ultra | Winner |
|-----------|-----------|-----------|--------|
| Gray Swan IPI (15 attempts) | 15.9% | Coming soon | Coming soon |
| IFBench | Coming soon | 81.7% | Coming soon |

### Mathematics

- Winner: Not comparable
- Muse Spark 1.3 public-lane score: 78.5 (Unranked · 2 rankable rows)
- Nemotron 3 Ultra public-lane score: Coming soon

| Benchmark | Muse Spark 1.3 | Nemotron 3 Ultra | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 74.035% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 46.341% | Coming soon | Coming soon |

## FAQ

### Which is better overall, Muse Spark 1.3 or Nemotron 3 Ultra?

Muse Spark 1.3 has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between Muse Spark 1.3 and Nemotron 3 Ultra?

The widest category gap is in reasoning, where the averages are 82.9 for Muse Spark 1.3 and 70.3 for Nemotron 3 Ultra.

### How many benchmarks does Muse Spark 1.3 cover on BenchLM?

Muse Spark 1.3 currently has 20 sourced benchmark scores on BenchLM.

### How many benchmarks does Nemotron 3 Ultra cover on BenchLM?

Nemotron 3 Ultra currently has 25 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Muse Spark 1.3 vs Muse Spark 1.1](/compare/muse-spark-1-1-vs-muse-spark-1-3)
- [Nemotron 3 Ultra vs Muse Spark 1.1](/compare/muse-spark-1-1-vs-nemotron-3-ultra)
- [Muse Spark 1.3 vs Muse Spark 1.2](/compare/muse-spark-1-2-vs-muse-spark-1-3)
- [Nemotron 3 Ultra vs Muse Spark 1.2](/compare/muse-spark-1-2-vs-nemotron-3-ultra)

## Explore More

- [Muse Spark 1.3 profile](/models/muse-spark-1-3)
- [Nemotron 3 Ultra profile](/models/nemotron-3-ultra)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)