Model comparison
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.
Last verified . 13 shared benchmarks.
MetaSummary
- 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.
Side by side
| Grok 4.1 | Muse Glimmer | |
|---|---|---|
| Provider | xAI | Meta |
| Noometry Index | 41.5 | 41.7 |
| Released | 2025-11-17 | 2026-08-10 |
| Weights | Proprietary | Open |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 19 | 15 |
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Category by category
Coding Muse Glimmer leads
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 Not comparable
Grok 4.1: 34.1 (#49), Muse Glimmer: —
| Benchmark | Grok 4.1 | Muse Glimmer |
|---|---|---|
| Cybench | 39% | — |
Reasoning Grok 4.1 leads
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 Too close to call
Grok 4.1: 38.9 (#120), Muse Glimmer: 38.8 (#125)
| Benchmark | Grok 4.1 | Muse Glimmer |
|---|---|---|
| LMArena Math | 1422 | 1417 |
Knowledge Too close to call
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 leads
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 leads
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 leads
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 leads
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 |
Frequently asked questions
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.