Model comparison
Grok 4 vs Muse Spark
Muse Spark is the stronger model overall, scoring 50.6 to 48.1 on the Noometry Index.
Last verified . 22 shared benchmarks.
MetaSummary
- They share 22 benchmarks with published results for both. Grok 4 scores higher in 5 categories and Muse Spark in 4 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in long context, where Grok 4 leads 63.1 to 44.4.
Side by side
| Grok 4 | Muse Spark | |
|---|---|---|
| Provider | xAI | Meta |
| Noometry Index | 48.1 | 50.6 |
| Released | 2025-07-09 | 2026-04-08 |
| Weights | Proprietary | Proprietary |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 48 | 27 |
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Category by category
Coding Grok 4 leads
Grok 4: 50.3 (#46), Muse Spark: 46.2 (#69)
| Benchmark | Grok 4 | Muse Spark |
|---|---|---|
| LMArena Coding | 1408 | 1481 |
| Aider Polyglot | 79.6% | — |
| SciCode | — | 51.5% |
| WeirdML | 45.7% | — |
Agentic & Tool Use Not comparable
Grok 4: 32.3 (#68), Muse Spark: —
| Benchmark | Grok 4 | Muse Spark |
|---|---|---|
| Terminal-Bench | 27.2% | — |
| Berkeley Function Calling Leaderboard | 63% | — |
| GDPval | 21.1% | — |
| Cybench | 43% | — |
| DeepResearch Bench | 47.3% | — |
| BALROG | 43.6% | — |
| LMArena Search | 1142 | — |
| METR Time Horizons | 66.6% | — |
Reasoning Too close to call
Grok 4: 36.7 (#65), Muse Spark: 35.9 (#67)
| Benchmark | Grok 4 | Muse Spark |
|---|---|---|
| LMArena Hard Prompts | 1409 | 1474 |
| Epoch Capabilities Index | 146.44 | 152.04 |
| ARC-AGI-2 | 16% | — |
| SimpleBench | 60.5% | — |
| Kagi LLM Benchmark | 73.6% | — |
| ARC-AGI-1 | 66.7% | — |
| CritPt | — | 11.3% |
| Chess Puzzles | 28% | — |
| ForecastBench | 60.9 | — |
Math Too close to call
Grok 4: 48.4 (#64), Muse Spark: 47.8 (#66)
| Benchmark | Grok 4 | Muse Spark |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 84% | 88.9% |
| LMArena Math | 1422 | 1455 |
| FrontierMath (Feb 2025 set) | 19.7% | 39% |
| FrontierMath Tier 4 (v1) | 2.1% | 14.6% |
| ProofBench | — | 17% |
| Omni-MATH | 60.3% | — |
Knowledge Muse Spark leads
Grok 4: 53.8 (#55), Muse Spark: 65.7 (#13)
| Benchmark | Grok 4 | Muse Spark |
|---|---|---|
| GPQA Diamond | 87% | 89.8% |
| LMArena Expert | 1415 | 1457 |
| Humanity's Last Exam | — | 40.6% |
| MMLU-Pro | 85.1% | — |
| Confabulations | 12.4% | — |
| GPQA (HELM) | 72.7% | — |
Multimodal Muse Spark leads
Grok 4: 33.7 (#94), Muse Spark: 43.4 (#24)
| Benchmark | Grok 4 | Muse Spark |
|---|---|---|
| LMArena Vision | 1210 | 1306 |
| GeoBench | 45% | — |
| LMArena Document | — | 1444 |
Multilingual Muse Spark leads
Grok 4: 51.8 (#103), Muse Spark: 56.1 (#24)
| Benchmark | Grok 4 | Muse Spark |
|---|---|---|
| LMArena Non-English | 1403 | 1464 |
| LMArena Chinese | 1427 | 1509 |
| LMArena French | 1418 | 1497 |
| LMArena German | 1429 | 1497 |
| LMArena Korean | 1377 | 1459 |
| LMArena Russian | 1410 | 1466 |
| LMArena Spanish | 1420 | 1472 |
| LMArena Japanese | 1394 | — |
Instruction Following Grok 4 leads
Grok 4: 79.2 (#5), Muse Spark: 75.9 (#51)
| Benchmark | Grok 4 | Muse Spark |
|---|---|---|
| LMArena Instruction Following | 1387 | 1442 |
| IFEval | 94.9% | — |
Long Context Grok 4 leads
Grok 4: 63.1 (#4), Muse Spark: 44.4 (#69)
| Benchmark | Grok 4 | Muse Spark |
|---|---|---|
| LMArena Longer Query | 1409 | 1451 |
| Fiction.LiveBench | 94.4% | — |
Writing & Preference Muse Spark leads
Grok 4: 58.5 (#116), Muse Spark: 66.0 (#39)
| Benchmark | Grok 4 | Muse Spark |
|---|---|---|
| LMArena Text | 1411 | 1474 |
| LMArena Creative Writing | 1397 | 1459 |
| LMArena Multi-Turn | 1416 | 1477 |
| Short-Story Creative Writing | 76.9% | — |
| WildBench | 79.7% | — |
Frequently asked questions
Is Grok 4 better than Muse Spark?
Muse Spark is the stronger model overall, scoring 50.6 to 48.1 on the Noometry Index.
Is Grok 4 or Muse Spark better for coding?
Grok 4 scores higher on coding benchmarks: 50.3 versus 46.2 in the Noometry coding category.
How many benchmarks do Grok 4 and Muse Spark share?
22 benchmarks have published results for both models. Grok 4 has 48 scored results on Noometry and Muse Spark has 27.