Model comparison
Muse Spark 1.3 vs Nemotron 3 Ultra
Muse Spark 1.3 is the stronger model overall, scoring 54.8 to 42.5 on the Noometry Index. Nemotron 3 Ultra costs 2.2× less per token, which makes it the better buy when Muse Spark 1.3's lead doesn't matter for your workload.
Last verified . 27 shared benchmarks.
Meta
NVIDIASummary
- They share 27 benchmarks with published results for both. Muse Spark 1.3 scores higher in 8 categories and Nemotron 3 Ultra in 1 category; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where Muse Spark 1.3 leads 73.1 to 35.3.
- The biggest single-benchmark swing is ProofBench: 58% for Muse Spark 1.3 and 2% for Nemotron 3 Ultra.
- Nemotron 3 Ultra is cheaper at $0.50 / $2.20 per million input/output tokens, against $1.25 / $4.25 for Muse Spark 1.3.
- Muse Spark 1.3 accepts more context: 1.05M tokens versus 262K.
- Nemotron 3 Ultra has downloadable open weights; the other is API-only.
Side by side
| Muse Spark 1.3 | Nemotron 3 Ultra | |
|---|---|---|
| Provider | Meta | NVIDIA |
| Noometry Index | 54.8 | 42.5 |
| Released | 2026-09-02 | 2026-06-04 |
| Weights | Proprietary | Open |
| Context window | 1.05M | 262K |
| Max output | 131K | 128K |
| Input $ / M tokens | $1.25 | $0.50 |
| Output $ / M tokens | $4.25 | $2.20 |
| Results tracked | 37 | 30 |
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Category by category
Coding Muse Spark 1.3 leads
Muse Spark 1.3: 56.6 (#21), Nemotron 3 Ultra: 38.1 (#182)
| Benchmark | Muse Spark 1.3 | Nemotron 3 Ultra |
|---|---|---|
| SciCode | 59.7% | 40.3% |
| LMArena Coding | 1514 | 1468 |
| FrontierCode | — | 13.6% |
| CursorBench | 41.6% | — |
| LMArena WebDev | 1657 | — |
| WeirdML | — | 43.5% |
Agentic & Tool Use Muse Spark 1.3 leads
Muse Spark 1.3: 38.6 (#30), Nemotron 3 Ultra: 23.4 (#126)
| Benchmark | Muse Spark 1.3 | Nemotron 3 Ultra |
|---|---|---|
| APEX-Agents | 57.8% | 22.7% |
| GDP.pdf | 27.6% | — |
Reasoning Muse Spark 1.3 leads
Muse Spark 1.3: 54.0 (#27), Nemotron 3 Ultra: 31.0 (#82)
| Benchmark | Muse Spark 1.3 | Nemotron 3 Ultra |
|---|---|---|
| CritPt | 26% | 3.1% |
| Chess Puzzles | 38% | 12% |
| LMArena Hard Prompts | 1503 | 1452 |
| Mystery Game Puzzles | 25% | 20% |
| DTBench | 96.5% | 90.1% |
| LMCA | 53.9% | 36.9% |
| Epoch Capabilities Index | 156.75 | 146.17 |
| NYT Connections (extended) | 85.1% | — |
| Bench to the Future 3 | 0.14 | — |
Math Muse Spark 1.3 leads
Muse Spark 1.3: 73.1 (#21), Nemotron 3 Ultra: 35.3 (#187)
| Benchmark | Muse Spark 1.3 | Nemotron 3 Ultra |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 99.2% | 86.7% |
| ProofBench | 58% | 2% |
| LMArena Math | 1494 | 1457 |
| FrontierMath (Tiers 1-3) | 74.4% | — |
| FrontierMath Tier 4 | 46.3% | — |
Knowledge Nemotron 3 Ultra leads
Muse Spark 1.3: 42.6 (#95), Nemotron 3 Ultra: 52.5 (#61)
| Benchmark | Muse Spark 1.3 | Nemotron 3 Ultra |
|---|---|---|
| LMArena Expert | 1516 | 1472 |
| GPQA Diamond | — | 85.4% |
Multimodal Not comparable
Muse Spark 1.3: 43.7 (#22), Nemotron 3 Ultra: —
| Benchmark | Muse Spark 1.3 | Nemotron 3 Ultra |
|---|---|---|
| LMArena Vision | 1309 | — |
| LMArena Document | 1471 | — |
Multilingual Muse Spark 1.3 leads
Muse Spark 1.3: 57.4 (#8), Nemotron 3 Ultra: 53.5 (#64)
| Benchmark | Muse Spark 1.3 | Nemotron 3 Ultra |
|---|---|---|
| LMArena Non-English | 1481 | 1427 |
| LMArena Chinese | 1529 | 1497 |
| LMArena French | 1524 | 1472 |
| LMArena German | 1515 | 1471 |
| LMArena Korean | 1501 | 1386 |
| LMArena Russian | 1490 | 1417 |
| LMArena Spanish | 1490 | 1454 |
| LMArena Japanese | 1474 | — |
Instruction Following Muse Spark 1.3 leads
Muse Spark 1.3: 77.5 (#22), Nemotron 3 Ultra: 74.7 (#88)
| Benchmark | Muse Spark 1.3 | Nemotron 3 Ultra |
|---|---|---|
| LMArena Instruction Following | 1477 | 1418 |
Long Context Muse Spark 1.3 leads
Muse Spark 1.3: 45.6 (#32), Nemotron 3 Ultra: 43.9 (#81)
| Benchmark | Muse Spark 1.3 | Nemotron 3 Ultra |
|---|---|---|
| LMArena Longer Query | 1488 | 1437 |
Writing & Preference Muse Spark 1.3 leads
Muse Spark 1.3: 73.6 (#9), Nemotron 3 Ultra: 66.3 (#36)
| Benchmark | Muse Spark 1.3 | Nemotron 3 Ultra |
|---|---|---|
| LMArena Text | 1490 | 1445 |
| LMArena Creative Writing | 1455 | 1398 |
| EQ-Bench Creative Writing | 1906 | 1692 |
| LMArena Multi-Turn | 1482 | 1411 |
Frequently asked questions
Is Muse Spark 1.3 better than Nemotron 3 Ultra?
Muse Spark 1.3 is the stronger model overall, scoring 54.8 to 42.5 on the Noometry Index. Nemotron 3 Ultra costs 2.2× less per token, which makes it the better buy when Muse Spark 1.3's lead doesn't matter for your workload.
Which is cheaper, Muse Spark 1.3 or Nemotron 3 Ultra?
Nemotron 3 Ultra is cheaper. It lists at $0.50 per million input tokens and $2.20 per million output tokens; Muse Spark 1.3 lists at $1.25 and $4.25.
Is Muse Spark 1.3 or Nemotron 3 Ultra better for coding?
Muse Spark 1.3 scores higher on coding benchmarks: 56.6 versus 38.1 in the Noometry coding category.
Which has the bigger context window?
Muse Spark 1.3 does, with 1.05M tokens against 262K.
How many benchmarks do Muse Spark 1.3 and Nemotron 3 Ultra share?
27 benchmarks have published results for both models. Muse Spark 1.3 has 37 scored results on Noometry and Nemotron 3 Ultra has 30.