# Grok 4.1 vs Muse Spark 1.3

> Muse Spark 1.3 is the stronger model overall, scoring 54.4 to 40.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/grok-4-1-vs-muse-spark-1-3
- Last updated: 2026-10-10
- Shared benchmarks: 16

## Summary

- They share 16 benchmarks with published results for both. Grok 4.1 scores higher in 0 categories and Muse Spark 1.3 in 9 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where Muse Spark 1.3 leads 72.4 to 36.2.

## Snapshot

| | Grok 4.1 | Muse Spark 1.3 |
|---|---|---|
| Provider | xAI | Meta |
| Noometry Index | 40.8 | 54.4 |
| Rank | 135 | 27 |
| Context | — | 1.05M |
| Input $/M | — | $1.25 |
| Output $/M | — | $4.25 |
| Weights | Proprietary | Proprietary |

## Coding

- Grok 4.1: 33.4 (#246)
- Muse Spark 1.3: 56.1 (#18)

| Benchmark | Grok 4.1 | Muse Spark 1.3 |
|---|---|---|
| LMArena WebDev | 1214 | 1655 |
| LMArena Coding | 1445 | 1516 |
| CursorBench | — | 41.6% |
| SciCode | — | 59.7% |

## Agentic & Tool Use

- Grok 4.1: 33.8 (#47)
- Muse Spark 1.3: 38.6 (#28)

| Benchmark | Grok 4.1 | Muse Spark 1.3 |
|---|---|---|
| APEX-Agents | — | 57.8% |
| Cybench | 39% | — |
| GDP.pdf | — | 27.6% |

## Reasoning

- Grok 4.1: 28.3 (#91)
- Muse Spark 1.3: 52.9 (#27)

| Benchmark | Grok 4.1 | Muse Spark 1.3 |
|---|---|---|
| LMArena Hard Prompts | 1436 | 1503 |
| NYT Connections (extended) | — | 85.1% |
| CritPt | — | 24.9% |
| Chess Puzzles | — | 38% |
| Mystery Game Puzzles | — | 25% |
| DTBench | — | 96.5% |
| LMCA | — | 53.9% |
| Bench to the Future 3 | — | 0.14 |
| Epoch Capabilities Index | — | 156.89 |

## Math

- Grok 4.1: 36.2 (#124)
- Muse Spark 1.3: 72.4 (#16)

| Benchmark | Grok 4.1 | Muse Spark 1.3 |
|---|---|---|
| LMArena Math | 1422 | 1497 |
| FrontierMath (Tiers 1-3) | — | 74.4% |
| FrontierMath Tier 4 | — | 46.3% |
| OTIS Mock AIME 2024-2025 | — | 99.2% |

## Knowledge

- Grok 4.1: 38.9 (#129)
- Muse Spark 1.3: 42.0 (#92)

| Benchmark | Grok 4.1 | Muse Spark 1.3 |
|---|---|---|
| LMArena Expert | 1417 | 1516 |

## Multimodal

- Grok 4.1: —
- Muse Spark 1.3: 43.0 (#21)

| Benchmark | Grok 4.1 | Muse Spark 1.3 |
|---|---|---|
| LMArena Vision | — | 1310 |
| LMArena Document | — | 1471 |

## Multilingual

- Grok 4.1: 53.6 (#64)
- Muse Spark 1.3: 57.8 (#6)

| Benchmark | Grok 4.1 | Muse Spark 1.3 |
|---|---|---|
| LMArena Non-English | 1425 | 1485 |
| LMArena Chinese | 1464 | 1527 |
| LMArena French | 1448 | 1534 |
| LMArena Korean | 1407 | 1513 |
| LMArena Russian | 1434 | 1491 |
| LMArena Spanish | 1438 | 1485 |
| LMArena German | 1447 | — |
| LMArena Japanese | 1396 | — |

## Instruction Following

- Grok 4.1: 74.0 (#106)
- Muse Spark 1.3: 77.8 (#14)

| Benchmark | Grok 4.1 | Muse Spark 1.3 |
|---|---|---|
| LMArena Instruction Following | 1400 | 1481 |

## Long Context

- Grok 4.1: 43.2 (#96)
- Muse Spark 1.3: 45.7 (#29)

| Benchmark | Grok 4.1 | Muse Spark 1.3 |
|---|---|---|
| LMArena Longer Query | 1416 | 1491 |

## Writing & Preference

- Grok 4.1: 62.6 (#71)
- Muse Spark 1.3: 73.7 (#10)

| Benchmark | Grok 4.1 | Muse Spark 1.3 |
|---|---|---|
| LMArena Text | 1437 | 1490 |
| LMArena Creative Writing | 1411 | 1450 |
| LMArena Multi-Turn | 1438 | 1486 |
| EQ-Bench Creative Writing | — | 1906 |

## FAQ

### Is Grok 4.1 better than Muse Spark 1.3?

Muse Spark 1.3 is the stronger model overall, scoring 54.4 to 40.8 on the Noometry Index.

### Is Grok 4.1 or Muse Spark 1.3 better for coding?

Muse Spark 1.3 scores higher on coding benchmarks: 56.1 versus 33.4 in the Noometry coding category.

### How many benchmarks do Grok 4.1 and Muse Spark 1.3 share?

16 benchmarks have published results for both models. Grok 4.1 has 19 scored results on Noometry and Muse Spark 1.3 has 34.