Model comparison
Grok Build 0.1 vs Muse Spark
Muse Spark is the stronger model overall, scoring 50.3 to 35.8 on the Noometry Index.
Last verified . 2 shared benchmarks.
MetaSummary
- They share 2 benchmarks with published results for both. Grok Build 0.1 scores higher in 0 categories and Muse Spark in 2 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Muse Spark leads 34.9 to 31.3.
Side by side
| Grok Build 0.1 | Muse Spark | |
|---|---|---|
| Provider | xAI | Meta |
| Noometry Index | 35.8 | 50.3 |
| Released | 2026-04-16 | 2026-04-08 |
| Weights | Proprietary | Proprietary |
| Context window | 256K | — |
| Max output | 256K | — |
| Input $ / M tokens | $1 | — |
| Output $ / M tokens | $2 | — |
| Results tracked | 3 | 27 |
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Category by category
Coding Muse Spark leads
Grok Build 0.1: 42.5 (#90), Muse Spark: 45.6 (#65)
| Benchmark | Grok Build 0.1 | Muse Spark |
|---|---|---|
| SciCode | 50.2% | 51.5% |
| LMArena Coding | — | 1482 |
Agentic & Tool Use Not comparable
Grok Build 0.1: 22.5 (#122), Muse Spark: —
| Benchmark | Grok Build 0.1 | Muse Spark |
|---|---|---|
| GBAEval | 2.4% | — |
Reasoning Muse Spark leads
Grok Build 0.1: 31.3 (#73), Muse Spark: 34.9 (#61)
| Benchmark | Grok Build 0.1 | Muse Spark |
|---|---|---|
| CritPt | 9.1% | 11.3% |
| LMArena Hard Prompts | — | 1475 |
| Epoch Capabilities Index | — | 152.09 |
Math Not comparable
Grok Build 0.1: —, Muse Spark: 46.8 (#57)
| Benchmark | Grok Build 0.1 | Muse Spark |
|---|---|---|
| OTIS Mock AIME 2024-2025 | — | 88.9% |
| ProofBench | — | 17% |
| LMArena Math | — | 1455 |
| FrontierMath (Feb 2025 set) | — | 39% |
| FrontierMath Tier 4 (v1) | — | 14.6% |
Knowledge Not comparable
Grok Build 0.1: —, Muse Spark: 65.7 (#12)
| Benchmark | Grok Build 0.1 | Muse Spark |
|---|---|---|
| GPQA Diamond | — | 89.8% |
| Humanity's Last Exam | — | 40.6% |
| LMArena Expert | — | 1458 |
Multimodal Not comparable
Grok Build 0.1: —, Muse Spark: 42.7 (#23)
| Benchmark | Grok Build 0.1 | Muse Spark |
|---|---|---|
| LMArena Vision | — | 1306 |
| LMArena Document | — | 1444 |
Multilingual Not comparable
Grok Build 0.1: —, Muse Spark: 56.3 (#23)
| Benchmark | Grok Build 0.1 | Muse Spark |
|---|---|---|
| LMArena Non-English | — | 1464 |
| LMArena Chinese | — | 1507 |
| LMArena French | — | 1497 |
| LMArena German | — | 1497 |
| LMArena Korean | — | 1457 |
| LMArena Russian | — | 1467 |
| LMArena Spanish | — | 1471 |
Instruction Following Not comparable
Grok Build 0.1: —, Muse Spark: 76.1 (#47)
| Benchmark | Grok Build 0.1 | Muse Spark |
|---|---|---|
| LMArena Instruction Following | — | 1443 |
Long Context Not comparable
Grok Build 0.1: —, Muse Spark: 44.4 (#65)
| Benchmark | Grok Build 0.1 | Muse Spark |
|---|---|---|
| LMArena Longer Query | — | 1451 |
Writing & Preference Not comparable
Grok Build 0.1: —, Muse Spark: 66.2 (#37)
| Benchmark | Grok Build 0.1 | Muse Spark |
|---|---|---|
| LMArena Text | — | 1474 |
| LMArena Creative Writing | — | 1460 |
| LMArena Multi-Turn | — | 1477 |
Frequently asked questions
Is Grok Build 0.1 better than Muse Spark?
Muse Spark is the stronger model overall, scoring 50.3 to 35.8 on the Noometry Index.
Is Grok Build 0.1 or Muse Spark better for coding?
Muse Spark scores higher on coding benchmarks: 45.6 versus 42.5 in the Noometry coding category.
How many benchmarks do Grok Build 0.1 and Muse Spark share?
2 benchmarks have published results for both models. Grok Build 0.1 has 3 scored results on Noometry and Muse Spark has 27.