# Grok 4.1 vs Muse Glimmer

> Grok 4.1 and Muse Glimmer score almost the same on the Noometry Index (41.5 vs 41.7), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/grok-4-1-vs-muse-glimmer
- Last updated: 2026-10-10
- Shared benchmarks: 13

## Summary

- They share 13 benchmarks with published results for both. Grok 4.1 scores higher in 7 categories and Muse Glimmer in 1 category; 6 gaps are clear of the uncertainty.
- The widest gap is in coding, where Muse Glimmer leads 40.4 to 33.7.
- Muse Glimmer has downloadable open weights; the other is API-only.

## Snapshot

| | Grok 4.1 | Muse Glimmer |
|---|---|---|
| Provider | xAI | Meta |
| Noometry Index | 41.5 | 41.7 |
| Rank | 134 | 131 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Open |

## Coding

- Grok 4.1: 33.7 (#253)
- Muse Glimmer: 40.4 (#142)

| Benchmark | Grok 4.1 | Muse Glimmer |
|---|---|---|
| LMArena WebDev | 1214 | 1355 |
| LMArena Coding | 1445 | 1416 |
| SciCode | — | 44.9% |

## Agentic & Tool Use

- Grok 4.1: 34.1 (#49)
- Muse Glimmer: —

| Benchmark | Grok 4.1 | Muse Glimmer |
|---|---|---|
| Cybench | 39% | — |

## Reasoning

- Grok 4.1: 29.5 (#91)
- Muse Glimmer: 25.7 (#144)

| Benchmark | Grok 4.1 | Muse Glimmer |
|---|---|---|
| LMArena Hard Prompts | 1435 | 1396 |
| CritPt | — | 2.6% |

## Math

- Grok 4.1: 38.9 (#120)
- Muse Glimmer: 38.8 (#125)

| Benchmark | Grok 4.1 | Muse Glimmer |
|---|---|---|
| LMArena Math | 1422 | 1417 |

## Knowledge

- Grok 4.1: 39.5 (#133)
- Muse Glimmer: 38.5 (#143)

| Benchmark | Grok 4.1 | Muse Glimmer |
|---|---|---|
| LMArena Expert | 1417 | 1386 |

## Multilingual

- Grok 4.1: 53.4 (#68)
- Muse Glimmer: 50.5 (#122)

| Benchmark | Grok 4.1 | Muse Glimmer |
|---|---|---|
| LMArena Non-English | 1425 | 1384 |
| LMArena Chinese | 1465 | 1412 |
| LMArena Russian | 1434 | 1390 |
| LMArena French | 1448 | — |
| LMArena German | 1446 | — |
| LMArena Japanese | 1397 | — |
| LMArena Korean | 1407 | — |
| LMArena Spanish | 1438 | — |

## Instruction Following

- Grok 4.1: 73.8 (#111)
- Muse Glimmer: 72.6 (#135)

| Benchmark | Grok 4.1 | Muse Glimmer |
|---|---|---|
| LMArena Instruction Following | 1400 | 1375 |

## Long Context

- Grok 4.1: 43.2 (#100)
- Muse Glimmer: 42.1 (#129)

| Benchmark | Grok 4.1 | Muse Glimmer |
|---|---|---|
| LMArena Longer Query | 1416 | 1382 |

## Writing & Preference

- Grok 4.1: 62.4 (#75)
- Muse Glimmer: 57.5 (#126)

| Benchmark | Grok 4.1 | Muse Glimmer |
|---|---|---|
| LMArena Text | 1437 | 1389 |
| LMArena Creative Writing | 1411 | 1339 |
| LMArena Multi-Turn | 1437 | 1399 |

## FAQ

### Is Grok 4.1 better than Muse Glimmer?

Grok 4.1 and Muse Glimmer score almost the same on the Noometry Index (41.5 vs 41.7), so choose on price, context window or the category you care about most.

### Is Grok 4.1 or Muse Glimmer better for coding?

Muse Glimmer scores higher on coding benchmarks: 40.4 versus 33.7 in the Noometry coding category.

### How many benchmarks do Grok 4.1 and Muse Glimmer share?

13 benchmarks have published results for both models. Grok 4.1 has 19 scored results on Noometry and Muse Glimmer has 15.