Model comparison
Muse Spark vs o3-pro
Muse Spark is the stronger model overall, scoring 50.6 to 42.9 on the Noometry Index.
Last verified . 1 shared benchmarks.
MetaSummary
- They share 1 benchmark with published results for both. Muse Spark scores higher in 3 categories and o3-pro in 2 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Muse Spark leads 65.7 to 29.5.
Side by side
| Muse Spark | o3-pro | |
|---|---|---|
| Provider | Meta | OpenAI |
| Noometry Index | 50.6 | 42.9 |
| Released | 2026-04-08 | 2025-06-10 |
| Weights | Proprietary | Proprietary |
| Context window | — | 200K |
| Max output | — | 100K |
| Input $ / M tokens | — | $20 |
| Output $ / M tokens | — | $80 |
| Results tracked | 27 | 12 |
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Category by category
Coding o3-pro leads
Muse Spark: 46.2 (#69), o3-pro: 55.5 (#24)
| Benchmark | Muse Spark | o3-pro |
|---|---|---|
| Aider Polyglot | — | 84.9% |
| SciCode | 51.5% | — |
| WeirdML | — | 58.2% |
| LMArena Coding | 1481 | — |
Reasoning Muse Spark leads
Muse Spark: 35.9 (#67), o3-pro: 23.8 (#171)
| Benchmark | Muse Spark | o3-pro |
|---|---|---|
| Epoch Capabilities Index | 152.04 | 147.42 |
| ARC-AGI-2 | — | 4.9% |
| Kagi LLM Benchmark | — | 72.1% |
| ARC-AGI-1 | — | 59.3% |
| CritPt | 11.3% | — |
| LMArena Hard Prompts | 1474 | — |
| DTBench | — | 86.9% |
| LMCA | — | 38.5% |
Math Not comparable
Muse Spark: 47.8 (#66), o3-pro: —
| Benchmark | Muse Spark | o3-pro |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 88.9% | — |
| ProofBench | 17% | — |
| LMArena Math | 1455 | — |
| FrontierMath (Feb 2025 set) | 39% | — |
| FrontierMath Tier 4 (v1) | 14.6% | — |
Knowledge Muse Spark leads
Muse Spark: 65.7 (#13), o3-pro: 29.5 (#238)
| Benchmark | Muse Spark | o3-pro |
|---|---|---|
| GPQA Diamond | 89.8% | — |
| Humanity's Last Exam | 40.6% | — |
| Confabulations | — | 14.2% |
| Vectara Hallucination Rate | — | 23.3% |
| LMArena Expert | 1457 | — |
Multimodal Not comparable
Muse Spark: 43.4 (#24), o3-pro: —
| Benchmark | Muse Spark | o3-pro |
|---|---|---|
| LMArena Vision | 1306 | — |
| LMArena Document | 1444 | — |
Multilingual Not comparable
Muse Spark: 56.1 (#24), o3-pro: —
| Benchmark | Muse Spark | o3-pro |
|---|---|---|
| LMArena Non-English | 1464 | — |
| LMArena Chinese | 1509 | — |
| LMArena French | 1497 | — |
| LMArena German | 1497 | — |
| LMArena Korean | 1459 | — |
| LMArena Russian | 1466 | — |
| LMArena Spanish | 1472 | — |
Instruction Following Not comparable
Muse Spark: 75.9 (#51), o3-pro: —
| Benchmark | Muse Spark | o3-pro |
|---|---|---|
| LMArena Instruction Following | 1442 | — |
Long Context o3-pro leads
Muse Spark: 44.4 (#69), o3-pro: 72.2 (#1)
| Benchmark | Muse Spark | o3-pro |
|---|---|---|
| Fiction.LiveBench | — | 97.2% |
| LMArena Longer Query | 1451 | — |
Writing & Preference Muse Spark leads
Muse Spark: 66.0 (#39), o3-pro: 57.1 (#133)
| Benchmark | Muse Spark | o3-pro |
|---|---|---|
| LMArena Text | 1474 | — |
| LMArena Creative Writing | 1459 | — |
| Short-Story Creative Writing | — | 84.4% |
| LMArena Multi-Turn | 1477 | — |
Frequently asked questions
Is Muse Spark better than o3-pro?
Muse Spark is the stronger model overall, scoring 50.6 to 42.9 on the Noometry Index.
Is Muse Spark or o3-pro better for coding?
o3-pro scores higher on coding benchmarks: 55.5 versus 46.2 in the Noometry coding category.
How many benchmarks do Muse Spark and o3-pro share?
1 benchmark has published results for both models. Muse Spark has 27 scored results on Noometry and o3-pro has 12.