Model comparison
Amazon Nova Experimental Chat 10 20 vs Muse Spark 1.2
Muse Spark 1.2 is the stronger model overall, scoring 50.3 to 42.1 on the Noometry Index.
Last verified . 14 shared benchmarks.
MetaSummary
- They share 14 benchmarks with published results for both. Amazon Nova Experimental Chat 10 20 scores higher in 0 categories and Muse Spark 1.2 in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Muse Spark 1.2 leads 51.3 to 28.4.
Side by side
| Amazon Nova Experimental Chat 10 20 | Muse Spark 1.2 | |
|---|---|---|
| Provider | Amazon | Meta |
| Noometry Index | 42.1 | 50.3 |
| Released | — | 2026-08-05 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1.05M |
| Max output | — | 131K |
| Input $ / M tokens | — | $1.25 |
| Output $ / M tokens | — | $4.25 |
| Results tracked | 17 | 31 |
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Category by category
Coding Muse Spark 1.2 leads
Amazon Nova Experimental Chat 10 20: 41.6 (#123), Muse Spark 1.2: 49.2 (#51)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Muse Spark 1.2 |
|---|---|---|
| LMArena Coding | 1412 | 1495 |
| DeepSWE | — | 54.9% |
| LMArena WebDev | — | 1533 |
| FrontierSWE | — | 12% |
| SciCode | — | 56.4% |
| WeirdML | — | 60.3% |
Agentic & Tool Use Not comparable
Amazon Nova Experimental Chat 10 20: —, Muse Spark 1.2: 29.4 (#87)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Muse Spark 1.2 |
|---|---|---|
| APEX-Agents | — | 36.4% |
| GDP.pdf | — | 16% |
Reasoning Muse Spark 1.2 leads
Amazon Nova Experimental Chat 10 20: 28.4 (#106), Muse Spark 1.2: 51.3 (#34)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Muse Spark 1.2 |
|---|---|---|
| LMArena Hard Prompts | 1396 | 1486 |
| SimpleBench | — | 74.5% |
| NYT Connections (extended) | — | 79.2% |
| CritPt | — | 17.7% |
| DTBench | — | 94.7% |
| LMCA | — | 48.4% |
| Epoch Capabilities Index | — | 154.87 |
Math Muse Spark 1.2 leads
Amazon Nova Experimental Chat 10 20: 39.0 (#119), Muse Spark 1.2: 46.4 (#70)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Muse Spark 1.2 |
|---|---|---|
| LMArena Math | 1425 | 1471 |
| ProofBench | — | 43% |
Knowledge Muse Spark 1.2 leads
Amazon Nova Experimental Chat 10 20: 38.5 (#144), Muse Spark 1.2: 54.1 (#53)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Muse Spark 1.2 |
|---|---|---|
| LMArena Expert | 1386 | 1480 |
| SimpleQA Verified | — | 60.3% |
Multimodal Not comparable
Amazon Nova Experimental Chat 10 20: —, Muse Spark 1.2: 43.4 (#25)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Muse Spark 1.2 |
|---|---|---|
| LMArena Vision | — | 1305 |
Multilingual Muse Spark 1.2 leads
Amazon Nova Experimental Chat 10 20: 49.5 (#131), Muse Spark 1.2: 57.1 (#11)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Muse Spark 1.2 |
|---|---|---|
| LMArena Non-English | 1372 | 1478 |
| LMArena Chinese | 1404 | 1511 |
| LMArena French | 1425 | 1513 |
| LMArena Russian | 1371 | 1487 |
| LMArena Spanish | 1382 | 1498 |
| LMArena German | 1391 | — |
| LMArena Japanese | 1360 | — |
| LMArena Korean | 1324 | — |
Instruction Following Muse Spark 1.2 leads
Amazon Nova Experimental Chat 10 20: 72.1 (#141), Muse Spark 1.2: 76.7 (#36)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Muse Spark 1.2 |
|---|---|---|
| LMArena Instruction Following | 1365 | 1461 |
Long Context Muse Spark 1.2 leads
Amazon Nova Experimental Chat 10 20: 41.7 (#133), Muse Spark 1.2: 45.2 (#48)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Muse Spark 1.2 |
|---|---|---|
| LMArena Longer Query | 1370 | 1475 |
Writing & Preference Muse Spark 1.2 leads
Amazon Nova Experimental Chat 10 20: 56.6 (#136), Muse Spark 1.2: 72.3 (#14)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Muse Spark 1.2 |
|---|---|---|
| LMArena Text | 1394 | 1482 |
| LMArena Creative Writing | 1318 | 1449 |
| LMArena Multi-Turn | 1364 | 1494 |
| EQ-Bench Creative Writing | — | 1840 |
Frequently asked questions
Is Amazon Nova Experimental Chat 10 20 better than Muse Spark 1.2?
Muse Spark 1.2 is the stronger model overall, scoring 50.3 to 42.1 on the Noometry Index.
Is Amazon Nova Experimental Chat 10 20 or Muse Spark 1.2 better for coding?
Muse Spark 1.2 scores higher on coding benchmarks: 49.2 versus 41.6 in the Noometry coding category.
How many benchmarks do Amazon Nova Experimental Chat 10 20 and Muse Spark 1.2 share?
14 benchmarks have published results for both models. Amazon Nova Experimental Chat 10 20 has 17 scored results on Noometry and Muse Spark 1.2 has 31.