Model comparison
Claude Sonnet 4.6 vs Muse Spark
Claude Sonnet 4.6 and Muse Spark score almost the same on the Noometry Index (50.3 vs 50.6), so choose on price, context window or the category you care about most.
Last verified . 26 shared benchmarks.
MetaSummary
- They share 26 benchmarks with published results for both. Claude Sonnet 4.6 scores higher in 6 categories and Muse Spark in 3 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Muse Spark leads 65.7 to 51.7.
- The biggest single-benchmark swing is ProofBench: 45% for Claude Sonnet 4.6 and 17% for Muse Spark.
Side by side
| Claude Sonnet 4.6 | Muse Spark | |
|---|---|---|
| Provider | Anthropic | Meta |
| Noometry Index | 50.3 | 50.6 |
| Released | 2026-02-17 | 2026-04-08 |
| Weights | Proprietary | Proprietary |
| Context window | 1M | — |
| Max output | 128K | — |
| Input $ / M tokens | $3 | — |
| Output $ / M tokens | $15 | — |
| Results tracked | 57 | 27 |
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Category by category
Coding Too close to call
Claude Sonnet 4.6: 46.3 (#67), Muse Spark: 46.2 (#69)
| Benchmark | Claude Sonnet 4.6 | Muse Spark |
|---|---|---|
| SciCode | 46.8% | 51.5% |
| LMArena Coding | 1504 | 1481 |
| SWE-bench Verified | 75.2% | — |
| DeepSWE | 29.9% | — |
| FrontierCode | 24.3% | — |
| LMArena WebDev | 1522 | — |
| WeirdML | 66.1% | — |
| ALE-Bench | 1,327 | — |
Agentic & Tool Use Not comparable
Claude Sonnet 4.6: 39.1 (#28), Muse Spark: —
| Benchmark | Claude Sonnet 4.6 | Muse Spark |
|---|---|---|
| Terminal-Bench | 53.4% | — |
| APEX-Agents | 43% | — |
| OSWorld 2.0 | 9.3% | — |
| DeepResearch Bench | 54.9% | — |
| OSWorld | 72.1% | — |
| ExploitBench | 23.6% | — |
| GBAEval | 48.8% | — |
| GDP.pdf | 18% | — |
| LMArena Search | 1221 | — |
| Vending-Bench 2 | 7,204 | — |
Reasoning Claude Sonnet 4.6 leads
Claude Sonnet 4.6: 46.1 (#45), Muse Spark: 35.9 (#67)
| Benchmark | Claude Sonnet 4.6 | Muse Spark |
|---|---|---|
| CritPt | 3.1% | 11.3% |
| LMArena Hard Prompts | 1484 | 1474 |
| Epoch Capabilities Index | 152.24 | 152.04 |
| ARC-AGI-2 | 60.4% | — |
| NYT Connections (extended) | 80.9% | — |
| ARC-AGI-1 | 86.5% | — |
| Chess Puzzles | 13% | — |
| Thematic Generalization | 76.3% | — |
| Mystery Game Puzzles | 16% | — |
| DTBench | 89.9% | — |
| LMCA | 46.5% | — |
| ForecastBench | 62 | — |
Math Claude Sonnet 4.6 leads
Claude Sonnet 4.6: 52.9 (#49), Muse Spark: 47.8 (#66)
| Benchmark | Claude Sonnet 4.6 | Muse Spark |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 85.8% | 88.9% |
| ProofBench | 45% | 17% |
| LMArena Math | 1462 | 1455 |
| FrontierMath (Feb 2025 set) | 32.4% | 39% |
| FrontierMath Tier 4 (v1) | 8.3% | 14.6% |
Knowledge Muse Spark leads
Claude Sonnet 4.6: 51.7 (#65), Muse Spark: 65.7 (#13)
| Benchmark | Claude Sonnet 4.6 | Muse Spark |
|---|---|---|
| GPQA Diamond | 87.4% | 89.8% |
| LMArena Expert | 1500 | 1457 |
| Humanity's Last Exam | — | 40.6% |
| SimpleQA Verified | 35.5% | — |
| Vectara Hallucination Rate | 10.6% | — |
Multimodal Muse Spark leads
Claude Sonnet 4.6: 38.0 (#68), Muse Spark: 43.4 (#24)
| Benchmark | Claude Sonnet 4.6 | Muse Spark |
|---|---|---|
| LMArena Vision | 1283 | 1306 |
| LMArena Document | 1482 | 1444 |
| Blueprint-Bench 2 | 6.7% | — |
Multilingual Muse Spark leads
Claude Sonnet 4.6: 54.4 (#41), Muse Spark: 56.1 (#24)
| Benchmark | Claude Sonnet 4.6 | Muse Spark |
|---|---|---|
| LMArena Non-English | 1440 | 1464 |
| LMArena Chinese | 1491 | 1509 |
| LMArena French | 1465 | 1497 |
| LMArena German | 1428 | 1497 |
| LMArena Korean | 1411 | 1459 |
| LMArena Russian | 1440 | 1466 |
| LMArena Spanish | 1464 | 1472 |
| LMArena Japanese | 1420 | — |
Instruction Following Claude Sonnet 4.6 leads
Claude Sonnet 4.6: 77.4 (#25), Muse Spark: 75.9 (#51)
| Benchmark | Claude Sonnet 4.6 | Muse Spark |
|---|---|---|
| LMArena Instruction Following | 1475 | 1442 |
Long Context Too close to call
Claude Sonnet 4.6: 45.3 (#44), Muse Spark: 44.4 (#69)
| Benchmark | Claude Sonnet 4.6 | Muse Spark |
|---|---|---|
| LMArena Longer Query | 1479 | 1451 |
Writing & Preference Claude Sonnet 4.6 leads
Claude Sonnet 4.6: 70.2 (#22), Muse Spark: 66.0 (#39)
| Benchmark | Claude Sonnet 4.6 | Muse Spark |
|---|---|---|
| LMArena Text | 1458 | 1474 |
| LMArena Creative Writing | 1435 | 1459 |
| LMArena Multi-Turn | 1464 | 1477 |
| EQ-Bench Creative Writing | 1810 | — |
| EQ-Bench 4 | 1207 | — |
Frequently asked questions
Is Claude Sonnet 4.6 better than Muse Spark?
Claude Sonnet 4.6 and Muse Spark score almost the same on the Noometry Index (50.3 vs 50.6), so choose on price, context window or the category you care about most.
Is Claude Sonnet 4.6 or Muse Spark better for coding?
They score almost the same on coding (46.3 vs 46.2); test both on your own repository before choosing.
How many benchmarks do Claude Sonnet 4.6 and Muse Spark share?
26 benchmarks have published results for both models. Claude Sonnet 4.6 has 57 scored results on Noometry and Muse Spark has 27.