Model comparison
Muse Spark 1.2 vs Qwen1.5 4b Chat
Muse Spark 1.2 is the stronger model overall, scoring 50.3 to 28.8 on the Noometry Index.
Last verified . 12 shared benchmarks.
Meta
Alibaba (Qwen)Summary
- They share 12 benchmarks with published results for both. Muse Spark 1.2 scores higher in 8 categories and Qwen1.5 4b Chat in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Muse Spark 1.2 leads 72.3 to 23.8.
- Qwen1.5 4b Chat has downloadable open weights; the other is API-only.
Side by side
| Muse Spark 1.2 | Qwen1.5 4b Chat | |
|---|---|---|
| Provider | Meta | Alibaba (Qwen) |
| Noometry Index | 50.3 | 28.8 |
| Released | 2026-08-05 | — |
| Weights | Proprietary | Open |
| Context window | 1.05M | — |
| Max output | 131K | — |
| Input $ / M tokens | $1.25 | — |
| Output $ / M tokens | $4.25 | — |
| Results tracked | 31 | 13 |
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Category by category
Coding Muse Spark 1.2 leads
Muse Spark 1.2: 49.2 (#51), Qwen1.5 4b Chat: 29.1 (#308)
| Benchmark | Muse Spark 1.2 | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Coding | 1495 | 999 |
| DeepSWE | 54.9% | — |
| LMArena WebDev | 1533 | — |
| FrontierSWE | 12% | — |
| SciCode | 56.4% | — |
| WeirdML | 60.3% | — |
Agentic & Tool Use Not comparable
Muse Spark 1.2: 29.4 (#87), Qwen1.5 4b Chat: —
| Benchmark | Muse Spark 1.2 | Qwen1.5 4b Chat |
|---|---|---|
| APEX-Agents | 36.4% | — |
| GDP.pdf | 16% | — |
Reasoning Muse Spark 1.2 leads
Muse Spark 1.2: 51.3 (#34), Qwen1.5 4b Chat: 18.5 (#279)
| Benchmark | Muse Spark 1.2 | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Hard Prompts | 1486 | 976 |
| 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
Muse Spark 1.2: 46.4 (#70), Qwen1.5 4b Chat: 30.4 (#234)
| Benchmark | Muse Spark 1.2 | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Math | 1471 | 1026 |
| ProofBench | 43% | — |
Knowledge Muse Spark 1.2 leads
Muse Spark 1.2: 54.1 (#53), Qwen1.5 4b Chat: 26.7 (#255)
| Benchmark | Muse Spark 1.2 | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Expert | 1480 | 980 |
| SimpleQA Verified | 60.3% | — |
Multimodal Not comparable
Muse Spark 1.2: 43.4 (#25), Qwen1.5 4b Chat: —
| Benchmark | Muse Spark 1.2 | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Vision | 1305 | — |
Multilingual Muse Spark 1.2 leads
Muse Spark 1.2: 57.1 (#11), Qwen1.5 4b Chat: 24.1 (#290)
| Benchmark | Muse Spark 1.2 | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Non-English | 1478 | 979 |
| LMArena Chinese | 1511 | 1024 |
| LMArena Russian | 1487 | 952 |
| LMArena French | 1513 | — |
| LMArena German | — | 902 |
| LMArena Spanish | 1498 | — |
Instruction Following Muse Spark 1.2 leads
Muse Spark 1.2: 76.7 (#36), Qwen1.5 4b Chat: 49.0 (#300)
| Benchmark | Muse Spark 1.2 | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Instruction Following | 1461 | 978 |
Long Context Muse Spark 1.2 leads
Muse Spark 1.2: 45.2 (#48), Qwen1.5 4b Chat: 30.1 (#290)
| Benchmark | Muse Spark 1.2 | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Longer Query | 1475 | 988 |
Writing & Preference Muse Spark 1.2 leads
Muse Spark 1.2: 72.3 (#14), Qwen1.5 4b Chat: 23.8 (#309)
| Benchmark | Muse Spark 1.2 | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Text | 1482 | 997 |
| LMArena Creative Writing | 1449 | 969 |
| LMArena Multi-Turn | 1494 | 977 |
| EQ-Bench Creative Writing | 1840 | — |
Frequently asked questions
Is Muse Spark 1.2 better than Qwen1.5 4b Chat?
Muse Spark 1.2 is the stronger model overall, scoring 50.3 to 28.8 on the Noometry Index.
Is Muse Spark 1.2 or Qwen1.5 4b Chat better for coding?
Muse Spark 1.2 scores higher on coding benchmarks: 49.2 versus 29.1 in the Noometry coding category.
How many benchmarks do Muse Spark 1.2 and Qwen1.5 4b Chat share?
12 benchmarks have published results for both models. Muse Spark 1.2 has 31 scored results on Noometry and Qwen1.5 4b Chat has 13.