# Claude Sonnet 4.5 vs Muse Glimmer

> Claude Sonnet 4.5 is the stronger model overall, scoring 44.0 to 41.3 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-sonnet-4-5-vs-muse-glimmer
- Last updated: 2026-10-10
- Shared benchmarks: 13

## Summary

- They share 13 benchmarks with published results for both. Claude Sonnet 4.5 scores higher in 6 categories and Muse Glimmer in 2 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Claude Sonnet 4.5 leads 48.4 to 37.9.
- Muse Glimmer has downloadable open weights; the other is API-only.

## Snapshot

| | Claude Sonnet 4.5 | Muse Glimmer |
|---|---|---|
| Provider | Anthropic | Meta |
| Noometry Index | 44.0 | 41.3 |
| Rank | 76 | 128 |
| Context | 1M | — |
| Input $/M | $3 | — |
| Output $/M | $15 | — |
| Weights | Proprietary | Open |

## Coding

- Claude Sonnet 4.5: 47.8 (#54)
- Muse Glimmer: 38.7 (#157)

| Benchmark | Claude Sonnet 4.5 | Muse Glimmer |
|---|---|---|
| LMArena WebDev | 1393 | 1355 |
| LMArena Coding | 1489 | 1417 |
| SWE-bench Verified | 71.3% | — |
| SWE-bench Verified (bash only) | 71.4% | — |
| SWE-bench Multilingual | 67% | — |
| SciCode | 44.7% | — |
| GSO | 14.7% | — |
| WeirdML | 47.7% | — |
| ALE-Bench | 796.15 | — |
| AlgoTune | 1.52 | — |

## Agentic & Tool Use

- Claude Sonnet 4.5: 38.1 (#30)
- Muse Glimmer: —

| Benchmark | Claude Sonnet 4.5 | Muse Glimmer |
|---|---|---|
| Terminal-Bench | 46.5% | — |
| Berkeley Function Calling Leaderboard | 73.2% | — |
| GDPval | 42.5% | — |
| Remote Labor Index | 2.1% | — |
| τ²-bench Airline | 72% | — |
| τ²-bench Banking | 25.3% | — |
| τ²-bench Retail | 72.4% | — |
| τ²-bench Telecom | 84.9% | — |
| Cybench | 60% | — |
| DeepResearch Bench | 52.6% | — |
| OSWorld | 62.9% | — |
| LMArena Search | 1159 | — |
| METR Time Horizons | 67.4% | — |
| Vending-Bench 2 | 3,839 | — |

## Reasoning

- Claude Sonnet 4.5: 26.9 (#113)
- Muse Glimmer: 27.2 (#111)

| Benchmark | Claude Sonnet 4.5 | Muse Glimmer |
|---|---|---|
| LMArena Hard Prompts | 1462 | 1395 |
| ARC-AGI-2 | 13.6% | — |
| SimpleBench | 54.3% | — |
| Kagi LLM Benchmark | 57.9% | — |
| NYT Connections (extended) | 37.3% | — |
| ARC-AGI-1 | 63.7% | — |
| CritPt | 1.1% | — |
| Chess Puzzles | 12% | — |
| EnigmaEval | 6% | — |
| EBR-Bench | 2.4% | — |
| Mystery Game Puzzles | 17% | — |
| DTBench | 83.2% | — |
| LMCA | 38.8% | — |
| Epoch Capabilities Index | 146.84 | — |
| ForecastBench | 61.9 | — |

## Math

- Claude Sonnet 4.5: 31.9 (#190)
- Muse Glimmer: 36.1 (#128)

| Benchmark | Claude Sonnet 4.5 | Muse Glimmer |
|---|---|---|
| LMArena Math | 1448 | 1419 |
| FrontierMath (Tiers 1-3) | 23.9% | — |
| FrontierMath Tier 4 | 2.4% | — |
| OTIS Mock AIME 2024-2025 | 77.8% | — |
| ProofBench | 19% | — |
| Omni-MATH | 55.3% | — |
| MATH Level 5 | 97.7% | — |
| FrontierMath (Feb 2025 set) | 15.2% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |

## Knowledge

- Claude Sonnet 4.5: 48.4 (#70)
- Muse Glimmer: 37.9 (#140)

| Benchmark | Claude Sonnet 4.5 | Muse Glimmer |
|---|---|---|
| LMArena Expert | 1483 | 1388 |
| GPQA Diamond | 82.3% | — |
| Humanity's Last Exam | 13.7% | — |
| SimpleQA Verified | 30.7% | — |
| MMLU-Pro | 86.9% | — |
| Vectara Hallucination Rate | 12% | — |
| GPQA (HELM) | 68.6% | — |

## Multimodal

- Claude Sonnet 4.5: 34.1 (#84)
- Muse Glimmer: —

| Benchmark | Claude Sonnet 4.5 | Muse Glimmer |
|---|---|---|
| VPCT | 39.8% | — |
| LMArena Document | 1450 | — |

## Multilingual

- Claude Sonnet 4.5: 53.6 (#65)
- Muse Glimmer: 50.6 (#117)

| Benchmark | Claude Sonnet 4.5 | Muse Glimmer |
|---|---|---|
| LMArena Non-English | 1425 | 1384 |
| LMArena Chinese | 1459 | 1412 |
| LMArena Russian | 1436 | 1393 |
| LMArena French | 1459 | — |
| LMArena German | 1427 | — |
| LMArena Japanese | 1390 | — |
| LMArena Korean | 1403 | — |
| LMArena Spanish | 1457 | — |

## Instruction Following

- Claude Sonnet 4.5: 75.2 (#74)
- Muse Glimmer: 72.7 (#134)

| Benchmark | Claude Sonnet 4.5 | Muse Glimmer |
|---|---|---|
| LMArena Instruction Following | 1459 | 1374 |
| IFEval | 85% | — |

## Long Context

- Claude Sonnet 4.5: 45.2 (#45)
- Muse Glimmer: 42.1 (#124)

| Benchmark | Claude Sonnet 4.5 | Muse Glimmer |
|---|---|---|
| LMArena Longer Query | 1476 | 1381 |

## Writing & Preference

- Claude Sonnet 4.5: 66.7 (#33)
- Muse Glimmer: 57.7 (#122)

| Benchmark | Claude Sonnet 4.5 | Muse Glimmer |
|---|---|---|
| LMArena Text | 1439 | 1389 |
| LMArena Creative Writing | 1442 | 1338 |
| LMArena Multi-Turn | 1465 | 1398 |
| EQ-Bench Creative Writing | 1678 | — |
| WildBench | 85.4% | — |

## FAQ

### Is Claude Sonnet 4.5 better than Muse Glimmer?

Claude Sonnet 4.5 is the stronger model overall, scoring 44.0 to 41.3 on the Noometry Index.

### Is Claude Sonnet 4.5 or Muse Glimmer better for coding?

Claude Sonnet 4.5 scores higher on coding benchmarks: 47.8 versus 38.7 in the Noometry coding category.

### How many benchmarks do Claude Sonnet 4.5 and Muse Glimmer share?

13 benchmarks have published results for both models. Claude Sonnet 4.5 has 73 scored results on Noometry and Muse Glimmer has 13.