# Muse Glimmer vs Muse Spark

> Muse Spark is the stronger model overall, scoring 50.6 to 41.7 on the Noometry Index.

- Canonical page: https://noometry.com/compare/muse-glimmer-vs-muse-spark
- Last updated: 2026-10-10
- Shared benchmarks: 14

## Summary

- They share 14 benchmarks with published results for both. Muse Glimmer scores higher in 0 categories and Muse Spark in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Muse Spark leads 65.7 to 38.5.
- The biggest single-benchmark swing is CritPt: 2.6% for Muse Glimmer and 11.3% for Muse Spark.
- Muse Glimmer has downloadable open weights; the other is API-only.

## Snapshot

| | Muse Glimmer | Muse Spark |
|---|---|---|
| Provider | Meta | Meta |
| Noometry Index | 41.7 | 50.6 |
| Rank | 131 | 46 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Open | Proprietary |

## Coding

- Muse Glimmer: 40.4 (#142)
- Muse Spark: 46.2 (#69)

| Benchmark | Muse Glimmer | Muse Spark |
|---|---|---|
| SciCode | 44.9% | 51.5% |
| LMArena Coding | 1416 | 1481 |
| LMArena WebDev | 1355 | — |

## Reasoning

- Muse Glimmer: 25.7 (#144)
- Muse Spark: 35.9 (#67)

| Benchmark | Muse Glimmer | Muse Spark |
|---|---|---|
| CritPt | 2.6% | 11.3% |
| LMArena Hard Prompts | 1396 | 1474 |
| Epoch Capabilities Index | — | 152.04 |

## Math

- Muse Glimmer: 38.8 (#125)
- Muse Spark: 47.8 (#66)

| Benchmark | Muse Glimmer | Muse Spark |
|---|---|---|
| LMArena Math | 1417 | 1455 |
| OTIS Mock AIME 2024-2025 | — | 88.9% |
| ProofBench | — | 17% |
| FrontierMath (Feb 2025 set) | — | 39% |
| FrontierMath Tier 4 (v1) | — | 14.6% |

## Knowledge

- Muse Glimmer: 38.5 (#143)
- Muse Spark: 65.7 (#13)

| Benchmark | Muse Glimmer | Muse Spark |
|---|---|---|
| LMArena Expert | 1386 | 1457 |
| GPQA Diamond | — | 89.8% |
| Humanity's Last Exam | — | 40.6% |

## Multimodal

- Muse Glimmer: —
- Muse Spark: 43.4 (#24)

| Benchmark | Muse Glimmer | Muse Spark |
|---|---|---|
| LMArena Vision | — | 1306 |
| LMArena Document | — | 1444 |

## Multilingual

- Muse Glimmer: 50.5 (#122)
- Muse Spark: 56.1 (#24)

| Benchmark | Muse Glimmer | Muse Spark |
|---|---|---|
| LMArena Non-English | 1384 | 1464 |
| LMArena Chinese | 1412 | 1509 |
| LMArena Russian | 1390 | 1466 |
| LMArena French | — | 1497 |
| LMArena German | — | 1497 |
| LMArena Korean | — | 1459 |
| LMArena Spanish | — | 1472 |

## Instruction Following

- Muse Glimmer: 72.6 (#135)
- Muse Spark: 75.9 (#51)

| Benchmark | Muse Glimmer | Muse Spark |
|---|---|---|
| LMArena Instruction Following | 1375 | 1442 |

## Long Context

- Muse Glimmer: 42.1 (#129)
- Muse Spark: 44.4 (#69)

| Benchmark | Muse Glimmer | Muse Spark |
|---|---|---|
| LMArena Longer Query | 1382 | 1451 |

## Writing & Preference

- Muse Glimmer: 57.5 (#126)
- Muse Spark: 66.0 (#39)

| Benchmark | Muse Glimmer | Muse Spark |
|---|---|---|
| LMArena Text | 1389 | 1474 |
| LMArena Creative Writing | 1339 | 1459 |
| LMArena Multi-Turn | 1399 | 1477 |

## FAQ

### Is Muse Glimmer better than Muse Spark?

Muse Spark is the stronger model overall, scoring 50.6 to 41.7 on the Noometry Index.

### Is Muse Glimmer or Muse Spark better for coding?

Muse Spark scores higher on coding benchmarks: 46.2 versus 40.4 in the Noometry coding category.

### How many benchmarks do Muse Glimmer and Muse Spark share?

14 benchmarks have published results for both models. Muse Glimmer has 15 scored results on Noometry and Muse Spark has 27.