# Muse Spark vs o3

> Muse Spark is the stronger model overall, scoring 50.6 to 47.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/muse-spark-vs-o3
- Last updated: 2026-10-10
- Shared benchmarks: 24

## Summary

- They share 24 benchmarks with published results for both. Muse Spark scores higher in 6 categories and o3 in 3 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Muse Spark leads 65.7 to 54.6.
- The biggest single-benchmark swing is Humanity's Last Exam: 40.6% for Muse Spark and 20.3% for o3.

## Snapshot

| | Muse Spark | o3 |
|---|---|---|
| Provider | Meta | OpenAI |
| Noometry Index | 50.6 | 47.5 |
| Rank | 46 | 61 |
| Context | — | 200K |
| Input $/M | — | $2 |
| Output $/M | — | $8 |
| Weights | Proprietary | Proprietary |

## Coding

- Muse Spark: 46.2 (#69)
- o3: 46.8 (#64)

| Benchmark | Muse Spark | o3 |
|---|---|---|
| LMArena Coding | 1481 | 1408 |
| SWE-bench Verified | — | 62.3% |
| SWE-bench Verified (bash only) | — | 58.4% |
| Aider Polyglot | — | 81.3% |
| SciCode | 51.5% | — |
| GSO | — | 8.8% |
| WeirdML | — | 52.4% |
| CadEval | — | 74% |
| ALE-Bench | — | 933.55 |

## Agentic & Tool Use

- Muse Spark: —
- o3: 34.5 (#44)

| Benchmark | Muse Spark | o3 |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 63% |
| GDPval | — | 30.8% |
| DeepResearch Bench | — | 45.2% |
| OSWorld | — | 23% |
| LMArena Search | — | 1144 |
| METR Time Horizons | — | 65.4% |

## Reasoning

- Muse Spark: 35.9 (#67)
- o3: 32.0 (#78)

| Benchmark | Muse Spark | o3 |
|---|---|---|
| CritPt | 11.3% | 1.4% |
| LMArena Hard Prompts | 1474 | 1402 |
| Epoch Capabilities Index | 152.04 | 146.86 |
| ARC-AGI-2 | — | 6.5% |
| SimpleBench | — | 53.1% |
| Kagi LLM Benchmark | — | 67.6% |
| ARC-AGI-1 | — | 60.8% |
| Chess Puzzles | — | 38% |
| EnigmaEval | — | 13.1% |
| Mystery Game Puzzles | — | 29% |
| DTBench | — | 84.8% |
| LMCA | — | 39.7% |
| ForecastBench | — | 62.5 |

## Math

- Muse Spark: 47.8 (#66)
- o3: 50.2 (#58)

| Benchmark | Muse Spark | o3 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 88.9% | 84.4% |
| LMArena Math | 1455 | 1426 |
| FrontierMath (Feb 2025 set) | 39% | 18.7% |
| FrontierMath Tier 4 (v1) | 14.6% | 2.1% |
| FrontierMath (Tiers 1-3) | — | 33.3% |
| ProofBench | 17% | — |
| Omni-MATH | — | 71.4% |
| MATH Level 5 | — | 97.8% |

## Knowledge

- Muse Spark: 65.7 (#13)
- o3: 54.6 (#52)

| Benchmark | Muse Spark | o3 |
|---|---|---|
| GPQA Diamond | 89.8% | 81.8% |
| Humanity's Last Exam | 40.6% | 20.3% |
| LMArena Expert | 1457 | 1402 |
| SimpleQA Verified | — | 49.4% |
| MMLU-Pro | — | 85.9% |
| Confabulations | — | 14.4% |
| GPQA (HELM) | — | 75.3% |

## Multimodal

- Muse Spark: 43.4 (#24)
- o3: 41.4 (#36)

| Benchmark | Muse Spark | o3 |
|---|---|---|
| LMArena Vision | 1306 | 1214 |
| GeoBench | — | 74% |
| VPCT | — | 52% |
| LMArena Document | 1444 | — |

## Multilingual

- Muse Spark: 56.1 (#24)
- o3: 51.7 (#105)

| Benchmark | Muse Spark | o3 |
|---|---|---|
| LMArena Non-English | 1464 | 1401 |
| LMArena Chinese | 1509 | 1437 |
| LMArena French | 1497 | 1430 |
| LMArena German | 1497 | 1420 |
| LMArena Korean | 1459 | 1370 |
| LMArena Russian | 1466 | 1406 |
| LMArena Spanish | 1472 | 1395 |
| LMArena Japanese | — | 1403 |

## Instruction Following

- Muse Spark: 75.9 (#51)
- o3: 72.8 (#127)

| Benchmark | Muse Spark | o3 |
|---|---|---|
| LMArena Instruction Following | 1442 | 1368 |
| IFEval | — | 86.9% |

## Long Context

- Muse Spark: 44.4 (#69)
- o3: 53.3 (#6)

| Benchmark | Muse Spark | o3 |
|---|---|---|
| LMArena Longer Query | 1451 | 1372 |
| Fiction.LiveBench | — | 88.9% |
| CL-bench | — | 17.8% |

## Writing & Preference

- Muse Spark: 66.0 (#39)
- o3: 63.5 (#64)

| Benchmark | Muse Spark | o3 |
|---|---|---|
| LMArena Text | 1474 | 1410 |
| LMArena Creative Writing | 1459 | 1359 |
| LMArena Multi-Turn | 1477 | 1405 |
| Short-Story Creative Writing | — | 83.9% |
| EQ-Bench Creative Writing | — | 1676 |
| WildBench | — | 86.1% |

## FAQ

### Is Muse Spark better than o3?

Muse Spark is the stronger model overall, scoring 50.6 to 47.5 on the Noometry Index.

### Is Muse Spark or o3 better for coding?

They score almost the same on coding (46.2 vs 46.8); test both on your own repository before choosing.

### How many benchmarks do Muse Spark and o3 share?

24 benchmarks have published results for both models. Muse Spark has 27 scored results on Noometry and o3 has 63.