Model comparison
Amazon Nova Experimental Chat 10 20 vs Muse Spark 1.3
Muse Spark 1.3 is the stronger model overall, scoring 54.4 to 41.5 on the Noometry Index.
Last verified . 15 shared benchmarks.
MetaSummary
- They share 15 benchmarks with published results for both. Amazon Nova Experimental Chat 10 20 scores higher in 0 categories and Muse Spark 1.3 in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Muse Spark 1.3 leads 72.4 to 36.2.
Side by side
| Amazon Nova Experimental Chat 10 20 | Muse Spark 1.3 | |
|---|---|---|
| Provider | Amazon | Meta |
| Noometry Index | 41.5 | 54.4 |
| Released | — | 2026-09-02 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1.05M |
| Max output | — | 131K |
| Input $ / M tokens | — | $1.25 |
| Output $ / M tokens | — | $4.25 |
| Results tracked | 17 | 34 |
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Category by category
Coding Muse Spark 1.3 leads
Amazon Nova Experimental Chat 10 20: 41.0 (#123), Muse Spark 1.3: 56.1 (#18)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Muse Spark 1.3 |
|---|---|---|
| LMArena Coding | 1413 | 1516 |
| CursorBench | — | 41.6% |
| LMArena WebDev | — | 1655 |
| SciCode | — | 59.7% |
Agentic & Tool Use Not comparable
Amazon Nova Experimental Chat 10 20: —, Muse Spark 1.3: 38.6 (#28)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Muse Spark 1.3 |
|---|---|---|
| APEX-Agents | — | 57.8% |
| GDP.pdf | — | 27.6% |
Reasoning Muse Spark 1.3 leads
Amazon Nova Experimental Chat 10 20: 27.3 (#110), Muse Spark 1.3: 52.9 (#27)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Muse Spark 1.3 |
|---|---|---|
| LMArena Hard Prompts | 1396 | 1503 |
| NYT Connections (extended) | — | 85.1% |
| CritPt | — | 24.9% |
| Chess Puzzles | — | 38% |
| Mystery Game Puzzles | — | 25% |
| DTBench | — | 96.5% |
| LMCA | — | 53.9% |
| Bench to the Future 3 | — | 0.14 |
| Epoch Capabilities Index | — | 156.89 |
Math Muse Spark 1.3 leads
Amazon Nova Experimental Chat 10 20: 36.2 (#121), Muse Spark 1.3: 72.4 (#16)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Muse Spark 1.3 |
|---|---|---|
| LMArena Math | 1425 | 1497 |
| FrontierMath (Tiers 1-3) | — | 74.4% |
| FrontierMath Tier 4 | — | 46.3% |
| OTIS Mock AIME 2024-2025 | — | 99.2% |
Knowledge Muse Spark 1.3 leads
Amazon Nova Experimental Chat 10 20: 37.8 (#142), Muse Spark 1.3: 42.0 (#92)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Muse Spark 1.3 |
|---|---|---|
| LMArena Expert | 1385 | 1516 |
Multimodal Not comparable
Amazon Nova Experimental Chat 10 20: —, Muse Spark 1.3: 43.0 (#21)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Muse Spark 1.3 |
|---|---|---|
| LMArena Vision | — | 1310 |
| LMArena Document | — | 1471 |
Multilingual Muse Spark 1.3 leads
Amazon Nova Experimental Chat 10 20: 49.7 (#127), Muse Spark 1.3: 57.8 (#6)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Muse Spark 1.3 |
|---|---|---|
| LMArena Non-English | 1372 | 1485 |
| LMArena Chinese | 1405 | 1527 |
| LMArena French | 1426 | 1534 |
| LMArena Korean | 1327 | 1513 |
| LMArena Russian | 1371 | 1491 |
| LMArena Spanish | 1381 | 1485 |
| LMArena German | 1391 | — |
| LMArena Japanese | 1355 | — |
Instruction Following Muse Spark 1.3 leads
Amazon Nova Experimental Chat 10 20: 72.3 (#136), Muse Spark 1.3: 77.8 (#14)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Muse Spark 1.3 |
|---|---|---|
| LMArena Instruction Following | 1365 | 1481 |
Long Context Muse Spark 1.3 leads
Amazon Nova Experimental Chat 10 20: 41.7 (#128), Muse Spark 1.3: 45.7 (#29)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Muse Spark 1.3 |
|---|---|---|
| LMArena Longer Query | 1370 | 1491 |
Writing & Preference Muse Spark 1.3 leads
Amazon Nova Experimental Chat 10 20: 56.9 (#131), Muse Spark 1.3: 73.7 (#10)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Muse Spark 1.3 |
|---|---|---|
| LMArena Text | 1394 | 1490 |
| LMArena Creative Writing | 1318 | 1450 |
| LMArena Multi-Turn | 1364 | 1486 |
| EQ-Bench Creative Writing | — | 1906 |
Frequently asked questions
Is Amazon Nova Experimental Chat 10 20 better than Muse Spark 1.3?
Muse Spark 1.3 is the stronger model overall, scoring 54.4 to 41.5 on the Noometry Index.
Is Amazon Nova Experimental Chat 10 20 or Muse Spark 1.3 better for coding?
Muse Spark 1.3 scores higher on coding benchmarks: 56.1 versus 41.0 in the Noometry coding category.
How many benchmarks do Amazon Nova Experimental Chat 10 20 and Muse Spark 1.3 share?
15 benchmarks have published results for both models. Amazon Nova Experimental Chat 10 20 has 17 scored results on Noometry and Muse Spark 1.3 has 34.