Claude Sonnet 4.6 vs Muse Spark 1.3
Claude Sonnet 4.6 
Muse Spark 1.3 Verdict
- Muse Spark 1.3 leads on quality: 68.3 vs 60.4.
- Claude Sonnet 4.6 is stronger in agents & tools, coding, human preference, instruction following, maths, multimodal, reasoning.
- Muse Spark 1.3 is stronger in composite, knowledge, long context.
- Muse Spark 1.3 is 3.0× cheaper ($2.00 vs $6.00 per 1M blended).
- Muse Spark 1.3 streams 5.6× faster (241 vs 43 tokens per second).
| Metric | Claude Sonnet 4.6 | Muse Spark 1.3 |
|---|---|---|
| BenchLeader Index | 60.4 | 68.3 |
| Agents & tools score | 54.5 | – |
| Coding score | 57.0 | – |
| Composite score | 67.8 | 90.3 |
| Human preference score | 61.9 | – |
| Instruction following score | 57.3 | – |
| Knowledge score | 62.3 | 79.1 |
| Long context score | 66.7 | 68.2 |
| Maths score | 62.7 | – |
| Multimodal score | 60.6 | – |
| Reasoning score | 65.2 | – |
| Blended price $/M | $6.00 | $2.00 |
| Output speed | 43 tok/s | 241 tok/s |
| Time to first answer | 1.7 s | 30.5 s |
| Context window | 1M | 1.0M |
| GPQA Diamond | 87.4% | – |
| OTIS Mock AIME | 85.8% | – |
| SWE-bench Verified (Epoch) | 75.2% | – |
| Terminal-Bench | 53.4% | – |
| FrontierCode | 24.3% | – |
| Epoch Capabilities Index | 152.3 | – |
| LMArena Text | 1473 | – |
| LMArena Hard Prompts | 1504 | – |
| LMArena Coding | 1528 | – |
| LMArena WebDev | 1521 | – |
| LMArena Vision | 1283 | – |
| LMArena Agent | -1.3 | – |
| AA Intelligence Index | 30.4 | 48.2 |
| IFBench | 56.6% | – |
| AA-LCR | 80.0% | 83.0% |
| MMMU-Pro | 73.3% | – |
| AA-Omniscience | 12.2 | 25 |
| Terminal-Bench Hard | 53.0% | – |
| GPQA Diamond (AA) | 87.5% | 93.5% |
| Humanity's Last Exam (AA) | 33.6% | 48.7% |
| SciCode (AA) | 50.1% | 58.8% |
| τ²-Bench Telecom (AA) | 79.5% | – |
| AIME (Vals) | 92.3% | – |
| LiveCodeBench | 82.1% | – |
| MMLU-Pro | 87.3% | – |
| LegalBench | 82.1% | – |
| CorpFin | 65.3% | – |
| TaxEval | 77.1% | – |
| MedQA | 92.1% | – |
| Terminal-Bench 2.1 (Vals) | 57.3% | – |
| SWE-bench (Vals) | 77.4% | – |
| GPQA Diamond (Vals) | 85.6% | – |
| Vals Index | 50.6 | – |
| MCP Atlas | 69.5% | – |
| PRBench Finance | – | 59.5% |
| PRBench Legal | – | 61.6% |
| EQ-Bench 4 | 1207 | – |
Data as of 2026-09-14. Best configuration of each model; every score links to its source on the model pages.
Claude Sonnet 4.6 vs Muse Spark 1.3: questions
- Is Claude Sonnet 4.6 better than Muse Spark 1.3?
- Muse Spark 1.3 leads on quality: 68.3 vs 60.4. The BenchLeader Index combines every independent quality benchmark; Muse Spark 1.3 is ahead overall as of 2026-09-14, but check the category scores for your use.
- Which is cheaper, Claude Sonnet 4.6 or Muse Spark 1.3?
- Muse Spark 1.3 is cheaper: $2.00 against $6.00 per million tokens, blended at three input tokens per output token.
- Which is faster, Claude Sonnet 4.6 or Muse Spark 1.3?
- Muse Spark 1.3 streams faster: 241 against 43 output tokens per second.
- Which has the larger context window?
- Muse Spark 1.3 accepts more context: 1.0M against 1M tokens.