Muse Spark 1.1 vs Nemotron 3 Ultra
Muse Spark 1.1 leads Nemotron 3 Ultra on coding, 70.3 to 30.0 on the Vibe Coding Index, and Nemotron 3 Ultra costs 1.8x less per output token ($2.40 vs $4.25 per million). Updated October 22, 2026; 62 benchmarks have a result for both.
Muse Spark 1.1 or Nemotron 3 Ultra: which to pick
Pick Muse Spark 1.1 for coding: it scores 70.3 on the Vibe Coding Index against 30.0 for Nemotron 3 Ultra.
Pick Nemotron 3 Ultra for output tokens 1.8x cheaper ($2.40 vs $4.25 per million) and work measured by LiveCodeBench (Vals AI) or Long context reasoning (AA-LCR), where it leads.
- Shared results
- 62
- Muse Spark 1.1 only
- 42
- Nemotron 3 Ultra only
- 9
- Like-for-like categories
- 8 of 9
Only benchmarks that tested both models count toward a pick; a result only one model has is shown but not compared.
Which one for your work
Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.
Coding
Vibe Coding Index, six public coding benchmarks
Muse Spark 1.1
Muse Spark 1.1 scores 70.3 against 30.0.
3 benchmarks behind each score
Intelligence
AA Intelligence Index
Muse Spark 1.1
Muse Spark 1.1 leads, 33.7 against 22.9.
Same board, both measured
Agentic work
AA Agentic Index
Muse Spark 1.1
Muse Spark 1.1 leads, 25.8 against 20.1.
Same board, both measured
Reasoning
GPQA Diamond
Muse Spark 1.1
Muse Spark 1.1 leads, 91.2% against 86.1%.
Same board, both measured
Knowledge
MMLU Pro
Muse Spark 1.1
Muse Spark 1.1 leads, 88.7% against 85.8%.
Same board, both measured
Web design
Design Arena: websites
Muse Spark 1.1
Muse Spark 1.1 leads, 1270 against 1145.
Same board, both measured
Long documents
Listed context window
Muse Spark 1.1
Muse Spark 1.1 takes 1.05M tokens against 262K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Nemotron 3 Ultra
Muse Spark 1.1 $0.0034, Nemotron 3 Ultra $0.0018 per turn.
List prices
Cost per solved task
One SWE-bench Verified task, solved
No call
Only Muse Spark 1.1 has the number, $0.43.
Directional only
At a glance
- Coding index
- Muse Spark 1.1 70.3 from 3 benchmarks, Nemotron 3 Ultra 30.0 from 3 benchmarks.
- Widest category
- Agentic work, 17.8 points apart on average over 6 shared benchmarks.
- Widest single gap
- Vibe Code Bench (Vals AI): Muse Spark 1.1 72.2% against Nemotron 3 Ultra 7.6%, 64.5 points apart on a 0 to 100 scale.
- Output price
- Muse Spark 1.1 $4.25 against Nemotron 3 Ultra $2.40 per million output tokens, 1.8x apart.
- Context window
- Muse Spark 1.1 takes 1.05M tokens, Nemotron 3 Ultra 262K.
Benchmark by benchmark
First the score: boards each model leads, per category, where both have a result. Then every board, a category to a fold; bars are each result on a 0 to 100 scale, so compare the two in a row, not one row with another.
| Category | Muse Spark 1.1 | Bars | Nemotron 3 Ultra | Ties |
|---|---|---|---|---|
| Coding | 8 | 1 | 1 tie | |
| Intelligence | 2 | 0 | ||
| Agentic work | 6 | 0 | ||
| Reasoning | 6 | 0 | ||
| Math | 3 | 0 | ||
| Knowledge | 8 | 0 | ||
| Web design | 8 | 0 | ||
| General | 17 | 2 | ||
| All shared boards | 58 | 3 | 1 tie |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index81
| Benchmark | Muse Spark 1.1 | Nemotron 3 Ultra | Leader |
|---|---|---|---|
| LMArena WebDev | 1542 | Not measured | Only Muse Spark 1.1 measured |
| AA Coding Index | 71.3 | 49.3 | Muse Spark 1.1 |
| LiveCodeBench (Vals AI) | 85.9% | 86.0% | Nemotron 3 Ultra |
| SWE-bench Verified (Vals AI) | 82.0% | 69.0% | Muse Spark 1.1 |
| Vibe Code Bench (Vals AI) | 72.2% | 7.6% | Muse Spark 1.1 |
| Code migration (Vals AI) | 31.1% | 4.9% | Muse Spark 1.1 |
| ProgramBench (Vals AI) | 0.0% | 0.0% | Tie |
| Terminal-Bench 2.1 (Vals AI) | 69.3% | 50.9% | Muse Spark 1.1 |
| SkillsBench (Vals AI) | 59.2% | Not measured | Only Muse Spark 1.1 measured |
| SciCode | 58.8% | 40.3% | Muse Spark 1.1 |
| Terminal-Bench Hard (Artificial Analysis run) | Not measured | 36.4% | Only Nemotron 3 Ultra measured |
| FrontierCode | Not measured | 13.6% | Only Nemotron 3 Ultra measured |
| WeirdML | Not measured | 43.5% | Only Nemotron 3 Ultra measured |
| LMArena Text: coding | 1498 | 1468 | Muse Spark 1.1 |
| LMArena Text: software and IT | 1498 | 1468 | Muse Spark 1.1 |
| LMArena WebDev: React | 1532 | Not measured | Only Muse Spark 1.1 measured |
| LMArena WebDev: HTML | 1540 | Not measured | Only Muse Spark 1.1 measured |
| LMArena WebDev: from an image | 1540 | Not measured | Only Muse Spark 1.1 measured |
| SWE Atlas: Codebase QnA | 42.2% | Not measured | Only Muse Spark 1.1 measured |
| SWE Atlas: Test Writing | 41.5% | Not measured | Only Muse Spark 1.1 measured |
| Neither model has a result on the other 23 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
| Benchmark | Muse Spark 1.1 | Nemotron 3 Ultra | Leader |
|---|---|---|---|
| AA Intelligence Index | 33.7 | 22.9 | Muse Spark 1.1 |
| Epoch Capabilities Index | 154.1 | 146.0 | Muse Spark 1.1 |
Agentic workLike-for-likePublic boards, shown as published, kept out of the index60
| Benchmark | Muse Spark 1.1 | Nemotron 3 Ultra | Leader |
|---|---|---|---|
| AA Agentic Index | 25.8 | 20.1 | Muse Spark 1.1 |
| Design Arena: agents building web apps | 1207 | Not measured | Only Muse Spark 1.1 measured |
| Design Arena: agents building full-stack apps | 1199 | Not measured | Only Muse Spark 1.1 measured |
| Design Arena: agents building mobile apps | 1175 | Not measured | Only Muse Spark 1.1 measured |
| Design Arena: agents building Android apps | 1178 | Not measured | Only Muse Spark 1.1 measured |
| Design Arena: agents building Godot games | 1103 | Not measured | Only Muse Spark 1.1 measured |
| Design Arena: agents building games | 1183 | Not measured | Only Muse Spark 1.1 measured |
| Design Arena: HTML slides | 1145 | Not measured | Only Muse Spark 1.1 measured |
| Design Arena: PowerPoint slides | 1134 | Not measured | Only Muse Spark 1.1 measured |
| Design Arena: spreadsheets | 1021 | Not measured | Only Muse Spark 1.1 measured |
| Finance Agent (Vals AI) | 57.2% | 37.7% | Muse Spark 1.1 |
| Legal Research Bench (Vals AI) | 38.0% | 15.4% | Muse Spark 1.1 |
| Excel Modeling Benchmark (Vals AI) | 56.4% | 31.7% | Muse Spark 1.1 |
| Time Horizon Index (Vals AI) | 1.7% | Not measured | Only Muse Spark 1.1 measured |
| τ²-Bench Telecom | Not measured | 83.3% | Only Nemotron 3 Ultra measured |
| APEX-Agents | 31.8% | 22.7% | Muse Spark 1.1 |
| Vending-Bench 2 | $6,520 | Not measured | Only Muse Spark 1.1 measured |
| MCP Atlas | 88.1% | 63.1% | Muse Spark 1.1 |
| Neither model has a result on the other 24 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index60
| Benchmark | Muse Spark 1.1 | Nemotron 3 Ultra | Leader |
|---|---|---|---|
| GPQA Diamond | 91.2% | 86.1% | Muse Spark 1.1 |
| MMMU Pro (Vals AI) | 86.6% | Not measured | Only Muse Spark 1.1 measured |
| GPQA Diamond (Artificial Analysis run) | 89.8% | 86.7% | Muse Spark 1.1 |
| Humanity's Last Exam (Artificial Analysis run) | 46.2% | 28.4% | Muse Spark 1.1 |
| GPQA Diamond (Epoch AI run) | Not measured | 85.4% | Only Nemotron 3 Ultra measured |
| Chess puzzles | 34.0% | Not measured | Only Muse Spark 1.1 measured |
| Mystery game puzzles | Not measured | 20.0% | Only Nemotron 3 Ultra measured |
| LMArena Text: hard prompts | 1485 | 1452 | Muse Spark 1.1 |
| LMArena Text: expert | 1478 | 1472 | Muse Spark 1.1 |
| LMArena Text: hard prompts in English | 1480 | 1453 | Muse Spark 1.1 |
| LMArena Vision: diagrams | 1305 | Not measured | Only Muse Spark 1.1 measured |
| LMArena Vision: homework | 1287 | Not measured | Only Muse Spark 1.1 measured |
| Neither model has a result on the other 11 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index30
| Benchmark | Muse Spark 1.1 | Nemotron 3 Ultra | Leader |
|---|---|---|---|
| OTIS Mock AIME | Not measured | 86.7% | Only Nemotron 3 Ultra measured |
| ProofBench | 39.0% | 2.0% | Muse Spark 1.1 |
| LMArena Text: math | 1482 | 1457 | Muse Spark 1.1 |
| LMArena Text: mathematical work | 1487 | 1461 | Muse Spark 1.1 |
| MathArena | 42.5% | Not measured | Only Muse Spark 1.1 measured |
| Neither model has a result on the other 9 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index80
| Benchmark | Muse Spark 1.1 | Nemotron 3 Ultra | Leader |
|---|---|---|---|
| MMLU Pro | 88.7% | 85.8% | Muse Spark 1.1 |
| LegalBench (Vals AI) | 85.0% | 82.1% | Muse Spark 1.1 |
| CorpFin (Vals AI) | 71.3% | 65.5% | Muse Spark 1.1 |
| TaxEval (Vals AI) | 79.7% | 73.1% | Muse Spark 1.1 |
| MortgageTax (Vals AI) | 66.1% | Not measured | Only Muse Spark 1.1 measured |
| MedCode (Vals AI) | Not measured | 38.6% | Only Nemotron 3 Ultra measured |
| SimpleQA Verified | 57.8% | Not measured | Only Muse Spark 1.1 measured |
| LMArena Text: science | 1484 | 1465 | Muse Spark 1.1 |
| LMArena Text: medicine and healthcare | 1479 | 1456 | Muse Spark 1.1 |
| LMArena Text: legal and government | 1481 | 1452 | Muse Spark 1.1 |
| LMArena Text: business and finance | 1470 | 1434 | Muse Spark 1.1 |
| PRBench Finance | 55.0% | Not measured | Only Muse Spark 1.1 measured |
| PRBench Legal | 57.0% | Not measured | Only Muse Spark 1.1 measured |
| Neither model has a result on the other 7 boards here | |||
Web designLike-for-likePublic boards, shown as published, kept out of the index80
| Benchmark | Muse Spark 1.1 | Nemotron 3 Ultra | Leader |
|---|---|---|---|
| Design Arena: websites | 1270 | 1145 | Muse Spark 1.1 |
| Design Arena: UI components | 1287 | 1135 | Muse Spark 1.1 |
| Design Arena: game dev | 1269 | 1138 | Muse Spark 1.1 |
| Design Arena: data viz | 1267 | 1141 | Muse Spark 1.1 |
| Design Arena: 3D | 1259 | 1131 | Muse Spark 1.1 |
| Design Arena: all code categories | 1276 | 1146 | Muse Spark 1.1 |
| Design Arena: SVG | 1234 | 1069 | Muse Spark 1.1 |
| Design Arena: ASCII art | 1269 | 1100 | Muse Spark 1.1 |
| Neither model has a result on the other 1 board here | |||
GeneralLike-for-likePublic boards, shown as published, kept out of the index172
| Benchmark | Muse Spark 1.1 | Nemotron 3 Ultra | Leader |
|---|---|---|---|
| Public Benefits Bench (Vals AI) | 61.3% | Not measured | Only Muse Spark 1.1 measured |
| SAGE (Vals AI) | 45.6% | Not measured | Only Muse Spark 1.1 measured |
| MedScribe (Vals AI) | 88.9% | Not measured | Only Muse Spark 1.1 measured |
| Vals Multimodal Index | 66.7% | Not measured | Only Muse Spark 1.1 measured |
| IFBench | Not measured | 81.4% | Only Nemotron 3 Ultra measured |
| Long context reasoning (AA-LCR) | 77.7% | 79.3% | Nemotron 3 Ultra |
| DTBench | 94.4% | 90.1% | Muse Spark 1.1 |
| LMCA | 49.9% | 36.9% | Muse Spark 1.1 |
| Surface Evolver Bench | 52.5% | Not measured | Only Muse Spark 1.1 measured |
| LMArena Text | 1478 | 1445 | Muse Spark 1.1 |
| LMArena Text: instruction following | 1457 | 1418 | Muse Spark 1.1 |
| LMArena Text: creative writing | 1435 | 1399 | Muse Spark 1.1 |
| LMArena Vision | 1293 | Not measured | Only Muse Spark 1.1 measured |
| LMArena Text: English | 1478 | 1455 | Muse Spark 1.1 |
| LMArena Text: non-English | 1471 | 1427 | Muse Spark 1.1 |
| LMArena Text: Chinese | 1515 | 1497 | Muse Spark 1.1 |
| LMArena Text: German | 1469 | 1472 | Nemotron 3 Ultra |
| LMArena Text: Japanese | 1450 | Not measured | Only Muse Spark 1.1 measured |
| LMArena Text: Korean | 1459 | 1384 | Muse Spark 1.1 |
| LMArena Text: French | 1492 | 1472 | Muse Spark 1.1 |
| LMArena Text: Spanish | 1464 | 1455 | Muse Spark 1.1 |
| LMArena Text: Russian | 1482 | 1417 | Muse Spark 1.1 |
| LMArena Text: Polish | 1499 | 1385 | Muse Spark 1.1 |
| LMArena Text: multi-turn | 1484 | 1411 | Muse Spark 1.1 |
| LMArena Text: longer queries | 1462 | 1437 | Muse Spark 1.1 |
| LMArena Text: writing and language | 1448 | 1406 | Muse Spark 1.1 |
| LMArena Text: entertainment and media | 1438 | 1397 | Muse Spark 1.1 |
| LMArena Vision: English | 1292 | Not measured | Only Muse Spark 1.1 measured |
| LMArena Vision: Chinese | 1348 | Not measured | Only Muse Spark 1.1 measured |
| LMArena Vision: reading text | 1301 | Not measured | Only Muse Spark 1.1 measured |
| LMArena Vision: humor | 1288 | Not measured | Only Muse Spark 1.1 measured |
| LMArena Vision: creative writing | 1253 | Not measured | Only Muse Spark 1.1 measured |
| LMArena Document | 1465 | Not measured | Only Muse Spark 1.1 measured |
| MultiChallenge | 75.3% | Not measured | Only Muse Spark 1.1 measured |
| EQ-Bench 4 | 1260 | Not measured | Only Muse Spark 1.1 measured |
| Neither model has a result on the other 13 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Muse Spark 1.1 | Nemotron 3 Ultra | Leader |
|---|---|---|---|
| Neither model has a result on 5 boards here | |||
What each workload costs
Three fixed token mixes at each model's listed price, so per-token rates become a bill.
Chat turn
1K input + 500 output tokens
Nemotron 3 Ultra costs less
Repository review
50K input + 3K output tokens
Nemotron 3 Ultra costs less
Agent loop
200K input + 10K output tokens
Nemotron 3 Ultra costs less
Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.
Specification differences
The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.
| Specification | Meta Muse Spark 1.1 | NVIDIA Nemotron 3 Ultra |
|---|---|---|
| Maker | Meta | NVIDIA |
| Weights | No public weights listed | Open weights |
| Released | July 16, 2026 | June 4, 2026 |
| Context window | 1.05M | 262K |
| Input $/Mtok | $1.25 | $0.60 |
| Output $/Mtok | $4.25 | $2.40 |
| Coding index | 70.3 | 30.0 |
| Independent measurements behind it | 3 | 3 |
| Cost per solved task | $0.43 | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Muse Spark 1.1 better than Nemotron 3 Ultra for coding?
Pick Muse Spark 1.1 for coding: it scores 70.3 on the Vibe Coding Index against 30.0 for Nemotron 3 Ultra. Pick Nemotron 3 Ultra for output tokens 1.8x cheaper ($2.40 vs $4.25 per million) and work measured by LiveCodeBench (Vals AI) or Long context reasoning (AA-LCR), where it leads.
Which is cheaper, Muse Spark 1.1 or Nemotron 3 Ultra?
Muse Spark 1.1 costs $1.25 per million input tokens and $4.25 per million output tokens; Nemotron 3 Ultra costs $0.60 and $2.40. Cost per solved task is known for Muse Spark 1.1 only.
Which has the bigger context window, Muse Spark 1.1 or Nemotron 3 Ultra?
Muse Spark 1.1, with 1.05M tokens against 262K.
How many benchmarks is the Muse Spark 1.1 vs Nemotron 3 Ultra comparison based on?
62 benchmarks have a result for both models as of October 22, 2026. Muse Spark 1.1's coding index rests on 3 independent benchmarks and Nemotron 3 Ultra's on 3. Where only one model has a result, the page says so instead of naming a winner.