Claude Sonnet 5 vs Muse Spark 1.3
Claude Sonnet 5 
Muse Spark 1.3 Verdict
- Muse Spark 1.3 (xhigh) leads on quality: 63.9 vs 61.4.
- Claude Sonnet 5 (high) is stronger in agents & tools, human preference, reasoning.
- Muse Spark 1.3 (xhigh) is stronger in coding, composite, knowledge, long context, multimodal.
- Muse Spark 1.3 (xhigh) is 2.0× cheaper ($2.00 vs $4.00 per 1M blended).
- Muse Spark 1.3 (xhigh) streams 3.2× faster (190 vs 60 tokens per second).
| Metric | Claude Sonnet 5 (high) | Muse Spark 1.3 (xhigh) |
|---|---|---|
| BenchLeader Index | 61.4 | 63.9 |
| Agents & tools score | 61.8 | 60.2 |
| Coding score | 61.6 | 70.3 |
| Composite score | 69.5 | 78.6 |
| Human preference score | 66.2 | – |
| Knowledge score | 62.4 | 75.1 |
| Long context score | 64.8 | 68.1 |
| Multimodal score | 63.1 | 66.6 |
| Reasoning score | 66.8 | – |
| Blended price $/M | $4.00 | $2.00 |
| Output speed | 60 tok/s | 190 tok/s |
| Time to first answer | 10.0 s | 35.7 s |
| Context window | 1M | 1M |
| SciCode | 48.6% | – |
| WeirdML | 68.8% | – |
| LMArena Text | 1462 | – |
| LMArena Hard Prompts | 1490 | – |
| LMArena Coding | 1521 | – |
| LMArena WebDev | 1538 | 1625 |
| LMArena Vision | 1278 | – |
| LMArena Agent | 6.3 | – |
| LiveBench | – | 81.6% |
| LiveBench Reasoning | – | 89.7% |
| LiveBench Coding | – | 81.1% |
| LiveBench Agentic Coding | – | 64.1% |
| LiveBench Mathematics | – | 96.0% |
| LiveBench Data Analysis | – | 79.6% |
| LiveBench Language | – | 82.8% |
| AA Intelligence Index | 32.0 | 45.2 |
| AA-LCR | 76.7% | 83.0% |
| MMMU-Pro | – | 82.0% |
| AA-Omniscience | -3.7 | 23.1 |
| GPQA Diamond (AA) | – | 94.1% |
| Humanity's Last Exam (AA) | 35.7% | 47.5% |
| SciCode (AA) | 54.3% | 59.7% |
| Terminal-Bench 2.1 (Vals) | – | 72.3% |
| Vals Index | – | 60.3 |
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 1.3: questions
- Is Claude Sonnet 5 better than Muse Spark 1.3?
- Muse Spark 1.3 (xhigh) leads on quality: 63.9 vs 61.4. The BenchLeader Index combines every independent quality benchmark; Muse Spark 1.3 (xhigh) is ahead overall as of 2026-09-10, but check the category scores for your use.
- Is Claude Sonnet 5 better than Muse Spark 1.3 for coding?
- Muse Spark 1.3 scores higher in coding (70 vs 62 on the category index, where 50 is average).
- Is Claude Sonnet 5 better than Muse Spark 1.3 for agentic tasks?
- Claude Sonnet 5 scores higher in agentic tasks (62 vs 60 on the category index, where 50 is average).
- Which is cheaper, Claude Sonnet 5 or Muse Spark 1.3?
- Muse Spark 1.3 is cheaper: $2.00 against $4.00 per million tokens, blended at three input tokens per output token.
- Which is faster, Claude Sonnet 5 or Muse Spark 1.3?
- Muse Spark 1.3 streams faster: 190 against 60 output tokens per second.
- Which has the larger context window?
- Both accept 1M tokens of context.