Claude Sonnet 5 vs Muse Spark
Claude Sonnet 5 
Muse Spark Verdict
- Muse Spark leads on quality: 65.6 vs 61.4.
- Claude Sonnet 5 (high) is stronger in composite.
- Muse Spark is stronger in agents & tools, coding, human preference, knowledge, long context, multimodal, reasoning, instruction following, maths.
| Metric | Claude Sonnet 5 (high) | Muse Spark |
|---|---|---|
| BenchLeader Index | 61.4 | 65.6 |
| Agents & tools score | 61.8 | 66.4 |
| Coding score | 61.6 | 66.2 |
| Composite score | 69.5 | 68.6 |
| Human preference score | 66.2 | 69.3 |
| Knowledge score | 62.4 | 64.6 |
| Long context score | 64.8 | 65.5 |
| Multimodal score | 63.1 | 65.9 |
| Reasoning score | 66.8 | 70.2 |
| Instruction following score | – | 79.7 |
| Maths score | – | 56.4 |
| Blended price $/M | $4.00 | – |
| Output speed | 60 tok/s | – |
| Time to first answer | 10.0 s | – |
| Context window | 1M | 262k |
| GPQA Diamond | – | 89.8% |
| OTIS Mock AIME | – | 88.9% |
| Humanity's Last Exam | – | 40.6% |
| SciCode | 48.6% | 51.5% |
| WeirdML | 68.8% | – |
| ProofBench | – | 17.0% |
| Epoch Capabilities Index | – | 152.1 |
| LMArena Text | 1462 | 1488 |
| LMArena Hard Prompts | 1490 | 1505 |
| LMArena Coding | 1521 | 1526 |
| LMArena WebDev | 1538 | – |
| LMArena Vision | 1278 | 1306 |
| LMArena Agent | 6.3 | – |
| AA Intelligence Index | 32.0 | 31.3 |
| IFBench | – | 75.9% |
| AA-LCR | 76.7% | 78.0% |
| MMMU-Pro | – | 80.5% |
| AA-Omniscience | -3.7 | 7.2 |
| Terminal-Bench Hard | – | 45.5% |
| GPQA Diamond (AA) | – | 88.4% |
| Humanity's Last Exam (AA) | 35.7% | 40.7% |
| SciCode (AA) | 54.3% | – |
| τ²-Bench Telecom (AA) | – | 91.5% |
| AIME (Vals) | – | 96.9% |
| MMLU-Pro | – | 87.3% |
| LegalBench | – | 84.2% |
| CorpFin | – | 65.1% |
| TaxEval | – | 77.7% |
| SWE-bench (Vals) | – | 74.4% |
| GPQA Diamond (Vals) | – | 89.7% |
| SWE-Bench Pro | – | 55.0% |
| MCP Atlas | – | 82.2% |
| MultiChallenge | – | 75.5% |
| PRBench Finance | – | 52.4% |
| PRBench Legal | – | 52.3% |
| MultiNRC | – | 59.0% |
| TutorBench | – | 68.5% |
Data as of 2026-09-10. Best configuration of each model; every score links to its source on the model pages.
Claude Sonnet 5 vs Muse Spark: questions
- Is Claude Sonnet 5 better than Muse Spark?
- Muse Spark leads on quality: 65.6 vs 61.4. The BenchLeader Index combines every independent quality benchmark; Muse Spark is ahead overall as of 2026-09-10, but check the category scores for your use.
- Is Claude Sonnet 5 better than Muse Spark for coding?
- Muse Spark scores higher in coding (66 vs 62 on the category index, where 50 is average).
- Is Claude Sonnet 5 better than Muse Spark for agentic tasks?
- Muse Spark scores higher in agentic tasks (66 vs 62 on the category index, where 50 is average).
- Which has the larger context window?
- Claude Sonnet 5 accepts more context: 1M against 262k tokens.