# Muse Spark 1.2 vs o3-mini

> Muse Spark 1.2 is the stronger model overall, scoring 50.3 to 36.7 on the Noometry Index.

- Canonical page: https://noometry.com/compare/muse-spark-1-2-vs-o3-mini
- Last updated: 2026-10-11
- Shared benchmarks: 22

## Summary

- They share 22 benchmarks with published results for both. Muse Spark 1.2 scores higher in 8 categories and o3-mini in 1 category; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Muse Spark 1.2 leads 51.3 to 16.3.
- The biggest single-benchmark swing is SimpleBench: 74.5% for Muse Spark 1.2 and 22.8% for o3-mini.
- Both cost about the same: $1.25 input and $4.25 output per million tokens.
- Muse Spark 1.2 accepts more context: 1.05M tokens versus 200K.

## Snapshot

| | Muse Spark 1.2 | o3-mini |
|---|---|---|
| Provider | Meta | OpenAI |
| Noometry Index | 50.3 | 36.7 |
| Rank | 48 | 212 |
| Context | 1.05M | 200K |
| Input $/M | $1.25 | $1.10 |
| Output $/M | $4.25 | $4.40 |
| Weights | Proprietary | Proprietary |

## Coding

- Muse Spark 1.2: 49.2 (#51)
- o3-mini: 40.8 (#132)

| Benchmark | Muse Spark 1.2 | o3-mini |
|---|---|---|
| SciCode | 56.4% | 39.8% |
| WeirdML | 60.3% | 43.7% |
| LMArena Coding | 1495 | 1378 |
| DeepSWE | 54.9% | — |
| Aider Polyglot | — | 60.4% |
| LMArena WebDev | 1533 | — |
| FrontierSWE | 12% | — |
| GSO | — | 1.3% |
| LiveBench Coding | — | 82.7% |
| CadEval | — | 54% |

## Agentic & Tool Use

- Muse Spark 1.2: 29.4 (#87)
- o3-mini: 29.6 (#84)

| Benchmark | Muse Spark 1.2 | o3-mini |
|---|---|---|
| APEX-Agents | 36.4% | — |
| Cybench | — | 22.5% |
| GDP.pdf | 16% | — |

## Reasoning

- Muse Spark 1.2: 51.3 (#34)
- o3-mini: 16.3 (#305)

| Benchmark | Muse Spark 1.2 | o3-mini |
|---|---|---|
| SimpleBench | 74.5% | 22.8% |
| CritPt | 17.7% | 0.3% |
| LMArena Hard Prompts | 1486 | 1366 |
| DTBench | 94.7% | 68.8% |
| LMCA | 48.4% | 19% |
| Epoch Capabilities Index | 154.87 | 140.34 |
| ARC-AGI-2 | — | 3% |
| NYT Connections (extended) | 79.2% | — |
| ARC-AGI-1 | — | 34.5% |
| Chess Puzzles | — | 17% |
| LiveBench Reasoning | — | 89.6% |
| Mystery Game Puzzles | — | 7% |
| LiveBench Data Analysis | — | 70.6% |
| ForecastBench | — | 59.6 |
| LiveBench | — | 75.9% |

## Math

- Muse Spark 1.2: 46.4 (#70)
- o3-mini: 28.1 (#244)

| Benchmark | Muse Spark 1.2 | o3-mini |
|---|---|---|
| LMArena Math | 1471 | 1396 |
| FrontierMath (Tiers 1-3) | — | 18.6% |
| FrontierMath Tier 4 | — | 0% |
| OTIS Mock AIME 2024-2025 | — | 76.9% |
| ProofBench | 43% | — |
| LiveBench Math | — | 77.3% |
| MATH Level 5 | — | 96.5% |
| FrontierMath (Feb 2025 set) | — | 12.4% |
| FrontierMath Tier 4 (v1) | — | 4.2% |

## Knowledge

- Muse Spark 1.2: 54.1 (#53)
- o3-mini: 38.3 (#146)

| Benchmark | Muse Spark 1.2 | o3-mini |
|---|---|---|
| SimpleQA Verified | 60.3% | 15.3% |
| LMArena Expert | 1480 | 1364 |
| GPQA Diamond | — | 77% |
| Confabulations | — | 17.9% |

## Multimodal

- Muse Spark 1.2: 43.4 (#25)
- o3-mini: —

| Benchmark | Muse Spark 1.2 | o3-mini |
|---|---|---|
| LMArena Vision | 1305 | — |

## Multilingual

- Muse Spark 1.2: 57.1 (#11)
- o3-mini: 45.7 (#164)

| Benchmark | Muse Spark 1.2 | o3-mini |
|---|---|---|
| LMArena Non-English | 1478 | 1319 |
| LMArena Chinese | 1511 | 1379 |
| LMArena French | 1513 | 1334 |
| LMArena Russian | 1487 | 1304 |
| LMArena Spanish | 1498 | 1321 |
| LMArena German | — | 1303 |
| LMArena Japanese | — | 1286 |
| LMArena Korean | — | 1314 |

## Instruction Following

- Muse Spark 1.2: 76.7 (#36)
- o3-mini: 75.1 (#72)

| Benchmark | Muse Spark 1.2 | o3-mini |
|---|---|---|
| LMArena Instruction Following | 1461 | 1337 |
| LiveBench Instruction Following | — | 84.4% |

## Long Context

- Muse Spark 1.2: 45.2 (#48)
- o3-mini: 33.8 (#256)

| Benchmark | Muse Spark 1.2 | o3-mini |
|---|---|---|
| LMArena Longer Query | 1475 | 1343 |
| Fiction.LiveBench | — | 50% |

## Writing & Preference

- Muse Spark 1.2: 72.3 (#14)
- o3-mini: 50.3 (#182)

| Benchmark | Muse Spark 1.2 | o3-mini |
|---|---|---|
| LMArena Text | 1482 | 1337 |
| LMArena Creative Writing | 1449 | 1286 |
| LMArena Multi-Turn | 1494 | 1320 |
| Short-Story Creative Writing | — | 61.7% |
| EQ-Bench Creative Writing | 1840 | — |
| LiveBench Language | — | 50.7% |

## FAQ

### Is Muse Spark 1.2 better than o3-mini?

Muse Spark 1.2 is the stronger model overall, scoring 50.3 to 36.7 on the Noometry Index.

### Which is cheaper, Muse Spark 1.2 or o3-mini?

o3-mini is cheaper. It lists at $1.10 per million input tokens and $4.40 per million output tokens; Muse Spark 1.2 lists at $1.25 and $4.25.

### Is Muse Spark 1.2 or o3-mini better for coding?

Muse Spark 1.2 scores higher on coding benchmarks: 49.2 versus 40.8 in the Noometry coding category.

### Which has the bigger context window?

Muse Spark 1.2 does, with 1.05M tokens against 200K.

### How many benchmarks do Muse Spark 1.2 and o3-mini share?

22 benchmarks have published results for both models. Muse Spark 1.2 has 31 scored results on Noometry and o3-mini has 51.