Claude Sonnet 5.5 vs Muse Spark
Claude Sonnet 5.5 
Muse Spark Verdict
- Claude Sonnet 5.5 (max) leads on quality: 67.6 vs 64.6.
- Claude Sonnet 5.5 (max) is stronger in agents & tools, coding, composite, knowledge, long context, maths, reasoning.
- Muse Spark is stronger in human preference, instruction following, multimodal.
| Metric | Claude Sonnet 5.5 (max) | Muse Spark |
|---|---|---|
| BenchLeader Index | 67.6 | 64.6 |
| Agents & tools score | 69.5 | 66.0 |
| Coding score | 69.8 | 65.3 |
| Composite score | 72.6 | 65.0 |
| Knowledge score | 65.4 | 63.7 |
| Long context score | 66.6 | 64.2 |
| Maths score | 72.9 | 59.3 |
| Reasoning score | 81.1 | 65.9 |
| Human preference score | – | 68.7 |
| Instruction following score | – | 78.3 |
| Multimodal score | – | 64.6 |
| Blended price $/M | $4.00 | – |
| Output speed | 141 tok/s | – |
| Time to first answer | 487.1 s | – |
| Context window | 1M | 262k |
| GPQA Diamond | 95.6% | 89.8% |
| FrontierMath Tiers 1–3 | 88.8% | – |
| FrontierMath Tier 4 | 80.5% | – |
| OTIS Mock AIME | 100.0% | 88.9% |
| SimpleQA Verified | 46.5% | – |
| Humanity's Last Exam | – | 40.6% |
| Terminal-Bench | 61.8% | – |
| SciCode | 61.0% | 51.5% |
| APEX-Agents | 75.5% | – |
| ProofBench | 100.0% | 17.0% |
| Epoch Capabilities Index | – | 152.0 |
| LMArena Text | – | 1489 |
| LMArena Hard Prompts | – | 1506 |
| LMArena Coding | – | 1529 |
| LMArena Vision | – | 1306 |
| LMArena Agent | 12 | – |
| LiveBench | 75.7% | – |
| LiveBench Reasoning | 91.6% | – |
| LiveBench Coding | 91.4% | – |
| LiveBench Agentic Coding | 56.3% | – |
| LiveBench Mathematics | 96.1% | – |
| LiveBench Data Analysis | 59.5% | – |
| LiveBench Language | 78.0% | – |
| LiveBench Instruction Following | 56.8% | – |
| AA Intelligence Index v4.3.2 | 56 | 31.3 |
| IFBench | – | 75.9% |
| AA-LCR | 82.7% | 78.0% |
| MMMU-Pro | – | 80.5% |
| AA-Omniscience | 32.3 | 7.2 |
| Terminal-Bench Hard | – | 45.5% |
| GPQA Diamond (AA) | – | 88.4% |
| Humanity's Last Exam (AA) | 55.0% | 40.7% |
| SciCode (AA) | 61.0% | – |
| 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% |
| CritPt | 31.4% | 11.3% |
| GDPval-AA v2.1 | 67.0% | 25.1% |
| Analyst Agent (AA) | 57.5% | – |
| CaseLaw v2 | – | 63.1% |
| MedCode | – | 51.3% |
| MedScribe | – | 85.9% |
| MMMU-Pro (Vals) | – | 87.4% |
| Terminal-Bench 2.0 (Vals) | – | 59.5% |
| Vibe Code Bench v1.1 | – | 19.7% |
| FORTRESS | – | 20.2% |
| SWE-Bench Pro (private) | – | 55.0% |
| SWE Atlas: Codebase QnA | – | 24.2% |
| SWE Atlas: Test Writing | – | 31.1% |
| LMArena Maths | – | 1466 |
| LMArena Creative Writing | – | 1465 |
| LMArena Instruction Following | – | 1464 |
| LMArena Multi-turn | – | 1493 |
| LMArena Longer Queries | – | 1476 |
| LMArena Document | – | 1467 |
| Mystery Game Puzzles | 65.0% | – |
| CursorBench | 55.5% | – |
| FrontierSWE | 61.9% | – |
| Terminal-Bench 4.0 (AA) | 63.6% | – |
| Terminal-Bench 2.1 (AA) | – | 62.2% |
| AutomationBench | 71.8% | – |
| GDP.pdf | 25.8% | – |
| MLCR | 75.0% | – |
| Harvey LAB | 2.8% | – |
| AA-Omniscience: accuracy | 54.0% | 49.6% |
| AA-Omniscience: non-hallucination | 53.0% | 15.8% |
| AA-Briefcase v1.1 | 1823 | – |
Data as of 2026-10-11. Best configuration of each model; every score links to its source on the model pages.
Claude Sonnet 5.5 vs Muse Spark: questions
- Is Claude Sonnet 5.5 better than Muse Spark?
- Claude Sonnet 5.5 (max) leads on quality: 67.6 vs 64.6. The BenchLeader Index combines every independent quality benchmark; Claude Sonnet 5.5 (max) is ahead overall as of 2026-10-11, but check the category scores for your use.
- Is Claude Sonnet 5.5 better than Muse Spark for coding?
- Claude Sonnet 5.5 scores higher in coding (70 vs 65 on the category index, where 50 is average).
- Is Claude Sonnet 5.5 better than Muse Spark for agentic tasks?
- Claude Sonnet 5.5 scores higher in agentic tasks (70 vs 66 on the category index, where 50 is average).
- Which has the larger context window?
- Claude Sonnet 5.5 accepts more context: 1M against 262k tokens.