Model comparison
Grok 4.1 vs Muse Spark 1.3
Muse Spark 1.3 is the stronger model overall, scoring 54.8 to 41.5 on the Noometry Index.
Last verified . 18 shared benchmarks.
MetaSummary
- They share 18 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 73.1 to 38.9.
Side by side
| Grok 4.1 | Muse Spark 1.3 | |
|---|---|---|
| Provider | xAI | Meta |
| Noometry Index | 41.5 | 54.8 |
| Released | 2025-11-17 | 2026-09-02 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1.05M |
| Max output | — | 131K |
| Input $ / M tokens | — | $1.25 |
| Output $ / M tokens | — | $4.25 |
| Results tracked | 19 | 37 |
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Category by category
Coding Muse Spark 1.3 leads
Grok 4.1: 33.7 (#253), Muse Spark 1.3: 56.6 (#21)
| Benchmark | Grok 4.1 | Muse Spark 1.3 |
|---|---|---|
| LMArena WebDev | 1214 | 1657 |
| LMArena Coding | 1445 | 1514 |
| CursorBench | — | 41.6% |
| SciCode | — | 59.7% |
Agentic & Tool Use Muse Spark 1.3 leads
Grok 4.1: 34.1 (#49), Muse Spark 1.3: 38.6 (#30)
| Benchmark | Grok 4.1 | Muse Spark 1.3 |
|---|---|---|
| APEX-Agents | — | 57.8% |
| Cybench | 39% | — |
| GDP.pdf | — | 27.6% |
Reasoning Muse Spark 1.3 leads
Grok 4.1: 29.5 (#91), Muse Spark 1.3: 54.0 (#27)
| Benchmark | Grok 4.1 | Muse Spark 1.3 |
|---|---|---|
| LMArena Hard Prompts | 1435 | 1503 |
| NYT Connections (extended) | — | 85.1% |
| CritPt | — | 26% |
| Chess Puzzles | — | 38% |
| Mystery Game Puzzles | — | 25% |
| DTBench | — | 96.5% |
| LMCA | — | 53.9% |
| Bench to the Future 3 | — | 0.14 |
| Epoch Capabilities Index | — | 156.75 |
Math Muse Spark 1.3 leads
Grok 4.1: 38.9 (#120), Muse Spark 1.3: 73.1 (#21)
| Benchmark | Grok 4.1 | Muse Spark 1.3 |
|---|---|---|
| LMArena Math | 1422 | 1494 |
| FrontierMath (Tiers 1-3) | — | 74.4% |
| FrontierMath Tier 4 | — | 46.3% |
| OTIS Mock AIME 2024-2025 | — | 99.2% |
| ProofBench | — | 58% |
Knowledge Muse Spark 1.3 leads
Grok 4.1: 39.5 (#133), Muse Spark 1.3: 42.6 (#95)
| Benchmark | Grok 4.1 | Muse Spark 1.3 |
|---|---|---|
| LMArena Expert | 1417 | 1516 |
Multimodal Not comparable
Grok 4.1: —, Muse Spark 1.3: 43.7 (#22)
| Benchmark | Grok 4.1 | Muse Spark 1.3 |
|---|---|---|
| LMArena Vision | — | 1309 |
| LMArena Document | — | 1471 |
Multilingual Muse Spark 1.3 leads
Grok 4.1: 53.4 (#68), Muse Spark 1.3: 57.4 (#8)
| Benchmark | Grok 4.1 | Muse Spark 1.3 |
|---|---|---|
| LMArena Non-English | 1425 | 1481 |
| LMArena Chinese | 1465 | 1529 |
| LMArena French | 1448 | 1524 |
| LMArena German | 1446 | 1515 |
| LMArena Japanese | 1397 | 1474 |
| LMArena Korean | 1407 | 1501 |
| LMArena Russian | 1434 | 1490 |
| LMArena Spanish | 1438 | 1490 |
Instruction Following Muse Spark 1.3 leads
Grok 4.1: 73.8 (#111), Muse Spark 1.3: 77.5 (#22)
| Benchmark | Grok 4.1 | Muse Spark 1.3 |
|---|---|---|
| LMArena Instruction Following | 1400 | 1477 |
Long Context Muse Spark 1.3 leads
Grok 4.1: 43.2 (#100), Muse Spark 1.3: 45.6 (#32)
| Benchmark | Grok 4.1 | Muse Spark 1.3 |
|---|---|---|
| LMArena Longer Query | 1416 | 1488 |
Writing & Preference Muse Spark 1.3 leads
Grok 4.1: 62.4 (#75), Muse Spark 1.3: 73.6 (#9)
| Benchmark | Grok 4.1 | Muse Spark 1.3 |
|---|---|---|
| LMArena Text | 1437 | 1490 |
| LMArena Creative Writing | 1411 | 1455 |
| LMArena Multi-Turn | 1437 | 1482 |
| EQ-Bench Creative Writing | — | 1906 |
Frequently asked questions
Is Grok 4.1 better than Muse Spark 1.3?
Muse Spark 1.3 is the stronger model overall, scoring 54.8 to 41.5 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: 56.6 versus 33.7 in the Noometry coding category.
How many benchmarks do Grok 4.1 and Muse Spark 1.3 share?
18 benchmarks have published results for both models. Grok 4.1 has 19 scored results on Noometry and Muse Spark 1.3 has 37.