Model comparison
Grok 4 vs Muse Spark 1.1
Muse Spark 1.1 is the stronger model overall, scoring 49.9 to 47.8 on the Noometry Index.
Last verified . 19 shared benchmarks.
MetaSummary
- They share 19 benchmarks with published results for both. Grok 4 scores higher in 4 categories and Muse Spark 1.1 in 6 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in long context, where Grok 4 leads 63.1 to 44.8.
Side by side
| Grok 4 | Muse Spark 1.1 | |
|---|---|---|
| Provider | xAI | Meta |
| Noometry Index | 47.8 | 49.9 |
| Released | 2025-07-09 | 2026-04-08 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1.05M |
| Max output | — | 131K |
| Input $ / M tokens | — | $1.25 |
| Output $ / M tokens | — | $4.25 |
| Results tracked | 48 | 36 |
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Category by category
Coding Too close to call
Grok 4: 49.9 (#44), Muse Spark 1.1: 50.8 (#38)
| Benchmark | Grok 4 | Muse Spark 1.1 |
|---|---|---|
| LMArena Coding | 1408 | 1497 |
| DeepSWE | — | 53.3% |
| Aider Polyglot | 79.6% | — |
| LMArena WebDev | — | 1542 |
| SciCode | — | 58.8% |
| WeirdML | 45.7% | — |
Agentic & Tool Use Muse Spark 1.1 leads
Grok 4: 32.1 (#62), Muse Spark 1.1: 33.9 (#45)
| Benchmark | Grok 4 | Muse Spark 1.1 |
|---|---|---|
| Terminal-Bench | 27.2% | — |
| Berkeley Function Calling Leaderboard | 63% | — |
| GDPval | 21.1% | — |
| τ²-bench Banking | — | 40.5% |
| Cybench | 43% | — |
| DeepResearch Bench | 47.3% | — |
| BALROG | 43.6% | — |
| GBAEval | — | 7.9% |
| GDP.pdf | — | 15% |
| LMArena Search | 1142 | — |
| METR Time Horizons | 66.6% | — |
| Vending-Bench 2 | — | 6,520 |
Reasoning Muse Spark 1.1 leads
Grok 4: 36.9 (#59), Muse Spark 1.1: 45.9 (#41)
| Benchmark | Grok 4 | Muse Spark 1.1 |
|---|---|---|
| LMArena Hard Prompts | 1409 | 1486 |
| Epoch Capabilities Index | 146.46 | 154.32 |
| ARC-AGI-2 | 16% | — |
| SimpleBench | 60.5% | — |
| Kagi LLM Benchmark | 73.6% | — |
| NYT Connections (extended) | — | 84.9% |
| ARC-AGI-1 | 66.7% | — |
| CritPt | — | 15.1% |
| Chess Puzzles | 28% | — |
| DTBench | — | 94.4% |
| LMCA | — | 49.9% |
| Surface Evolver Bench | — | 52.5% |
| ForecastBench | 60.9 | — |
Math Grok 4 leads
Grok 4: 46.5 (#58), Muse Spark 1.1: 44.0 (#67)
| Benchmark | Grok 4 | Muse Spark 1.1 |
|---|---|---|
| LMArena Math | 1422 | 1477 |
| OTIS Mock AIME 2024-2025 | 84% | — |
| ProofBench | — | 39% |
| Omni-MATH | 60.3% | — |
| FrontierMath (Feb 2025 set) | 19.7% | — |
| FrontierMath Tier 4 (v1) | 2.1% | — |
Knowledge Too close to call
Grok 4: 53.7 (#50), Muse Spark 1.1: 52.8 (#55)
| Benchmark | Grok 4 | Muse Spark 1.1 |
|---|---|---|
| LMArena Expert | 1417 | 1480 |
| GPQA Diamond | 87% | — |
| SimpleQA Verified | — | 57.8% |
| MMLU-Pro | 85.1% | — |
| Confabulations | 12.4% | — |
| GPQA (HELM) | 72.7% | — |
Multimodal Muse Spark 1.1 leads
Grok 4: 33.1 (#89), Muse Spark 1.1: 41.9 (#28)
| Benchmark | Grok 4 | Muse Spark 1.1 |
|---|---|---|
| LMArena Vision | 1211 | 1292 |
| GeoBench | 45% | — |
| LMArena Document | — | 1465 |
Multilingual Muse Spark 1.1 leads
Grok 4: 52.0 (#98), Muse Spark 1.1: 56.8 (#16)
| Benchmark | Grok 4 | Muse Spark 1.1 |
|---|---|---|
| LMArena Non-English | 1403 | 1471 |
| LMArena Chinese | 1428 | 1518 |
| LMArena French | 1418 | 1494 |
| LMArena German | 1429 | 1466 |
| LMArena Japanese | 1396 | 1445 |
| LMArena Korean | 1376 | 1459 |
| LMArena Russian | 1409 | 1482 |
| LMArena Spanish | 1419 | 1471 |
Instruction Following Grok 4 leads
Grok 4: 79.4 (#4), Muse Spark 1.1: 76.8 (#36)
| Benchmark | Grok 4 | Muse Spark 1.1 |
|---|---|---|
| LMArena Instruction Following | 1387 | 1457 |
| IFEval | 94.9% | — |
Long Context Grok 4 leads
Grok 4: 63.1 (#4), Muse Spark 1.1: 44.8 (#55)
| Benchmark | Grok 4 | Muse Spark 1.1 |
|---|---|---|
| LMArena Longer Query | 1409 | 1463 |
| Fiction.LiveBench | 94.4% | — |
Writing & Preference Muse Spark 1.1 leads
Grok 4: 58.7 (#111), Muse Spark 1.1: 73.6 (#11)
| Benchmark | Grok 4 | Muse Spark 1.1 |
|---|---|---|
| LMArena Text | 1412 | 1479 |
| LMArena Creative Writing | 1397 | 1440 |
| LMArena Multi-Turn | 1416 | 1484 |
| Short-Story Creative Writing | 76.9% | — |
| EQ-Bench Creative Writing | — | 1927 |
| WildBench | 79.7% | — |
| EQ-Bench 4 | — | 1260 |
Frequently asked questions
Is Grok 4 better than Muse Spark 1.1?
Muse Spark 1.1 is the stronger model overall, scoring 49.9 to 47.8 on the Noometry Index.
Is Grok 4 or Muse Spark 1.1 better for coding?
They score almost the same on coding (49.9 vs 50.8); test both on your own repository before choosing.
How many benchmarks do Grok 4 and Muse Spark 1.1 share?
19 benchmarks have published results for both models. Grok 4 has 48 scored results on Noometry and Muse Spark 1.1 has 36.