# Muse Spark 1.3 vs o3-mini

> Muse Spark 1.3 is the stronger model overall, scoring 54.8 to 36.7 on the Noometry Index.

- Canonical page: https://noometry.com/compare/muse-spark-1-3-vs-o3-mini
- Last updated: 2026-10-11
- Shared benchmarks: 27

## Summary

- They share 27 benchmarks with published results for both. Muse Spark 1.3 scores higher in 9 categories and o3-mini in 0 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where Muse Spark 1.3 leads 73.1 to 28.1.
- The biggest single-benchmark swing is FrontierMath (Tiers 1-3): 74.4% for Muse Spark 1.3 and 18.6% for o3-mini.
- Both cost about the same: $1.25 input and $4.25 output per million tokens.
- Muse Spark 1.3 accepts more context: 1.05M tokens versus 200K.

## Snapshot

| | Muse Spark 1.3 | o3-mini |
|---|---|---|
| Provider | Meta | OpenAI |
| Noometry Index | 54.8 | 36.7 |
| Rank | 27 | 212 |
| Context | 1.05M | 200K |
| Input $/M | $1.25 | $1.10 |
| Output $/M | $4.25 | $4.40 |
| Weights | Proprietary | Proprietary |

## Coding

- Muse Spark 1.3: 56.6 (#21)
- o3-mini: 40.8 (#132)

| Benchmark | Muse Spark 1.3 | o3-mini |
|---|---|---|
| SciCode | 59.7% | 39.8% |
| LMArena Coding | 1514 | 1378 |
| Aider Polyglot | — | 60.4% |
| CursorBench | 41.6% | — |
| LMArena WebDev | 1657 | — |
| GSO | — | 1.3% |
| WeirdML | — | 43.7% |
| LiveBench Coding | — | 82.7% |
| CadEval | — | 54% |

## Agentic & Tool Use

- Muse Spark 1.3: 38.6 (#30)
- o3-mini: 29.6 (#84)

| Benchmark | Muse Spark 1.3 | o3-mini |
|---|---|---|
| APEX-Agents | 57.8% | — |
| Cybench | — | 22.5% |
| GDP.pdf | 27.6% | — |

## Reasoning

- Muse Spark 1.3: 54.0 (#27)
- o3-mini: 16.3 (#305)

| Benchmark | Muse Spark 1.3 | o3-mini |
|---|---|---|
| CritPt | 26% | 0.3% |
| Chess Puzzles | 38% | 17% |
| LMArena Hard Prompts | 1503 | 1366 |
| Mystery Game Puzzles | 25% | 7% |
| DTBench | 96.5% | 68.8% |
| LMCA | 53.9% | 19% |
| Epoch Capabilities Index | 156.75 | 140.34 |
| ARC-AGI-2 | — | 3% |
| SimpleBench | — | 22.8% |
| NYT Connections (extended) | 85.1% | — |
| ARC-AGI-1 | — | 34.5% |
| LiveBench Reasoning | — | 89.6% |
| LiveBench Data Analysis | — | 70.6% |
| Bench to the Future 3 | 0.14 | — |
| ForecastBench | — | 59.6 |
| LiveBench | — | 75.9% |

## Math

- Muse Spark 1.3: 73.1 (#21)
- o3-mini: 28.1 (#244)

| Benchmark | Muse Spark 1.3 | o3-mini |
|---|---|---|
| FrontierMath (Tiers 1-3) | 74.4% | 18.6% |
| FrontierMath Tier 4 | 46.3% | 0% |
| OTIS Mock AIME 2024-2025 | 99.2% | 76.9% |
| LMArena Math | 1494 | 1396 |
| ProofBench | 58% | — |
| LiveBench Math | — | 77.3% |
| MATH Level 5 | — | 96.5% |
| FrontierMath (Feb 2025 set) | — | 12.4% |
| FrontierMath Tier 4 (v1) | — | 4.2% |

## Knowledge

- Muse Spark 1.3: 42.6 (#95)
- o3-mini: 38.3 (#146)

| Benchmark | Muse Spark 1.3 | o3-mini |
|---|---|---|
| LMArena Expert | 1516 | 1364 |
| GPQA Diamond | — | 77% |
| SimpleQA Verified | — | 15.3% |
| Confabulations | — | 17.9% |

## Multimodal

- Muse Spark 1.3: 43.7 (#22)
- o3-mini: —

| Benchmark | Muse Spark 1.3 | o3-mini |
|---|---|---|
| LMArena Vision | 1309 | — |
| LMArena Document | 1471 | — |

## Multilingual

- Muse Spark 1.3: 57.4 (#8)
- o3-mini: 45.7 (#164)

| Benchmark | Muse Spark 1.3 | o3-mini |
|---|---|---|
| LMArena Non-English | 1481 | 1319 |
| LMArena Chinese | 1529 | 1379 |
| LMArena French | 1524 | 1334 |
| LMArena German | 1515 | 1303 |
| LMArena Japanese | 1474 | 1286 |
| LMArena Korean | 1501 | 1314 |
| LMArena Russian | 1490 | 1304 |
| LMArena Spanish | 1490 | 1321 |

## Instruction Following

- Muse Spark 1.3: 77.5 (#22)
- o3-mini: 75.1 (#72)

| Benchmark | Muse Spark 1.3 | o3-mini |
|---|---|---|
| LMArena Instruction Following | 1477 | 1337 |
| LiveBench Instruction Following | — | 84.4% |

## Long Context

- Muse Spark 1.3: 45.6 (#32)
- o3-mini: 33.8 (#256)

| Benchmark | Muse Spark 1.3 | o3-mini |
|---|---|---|
| LMArena Longer Query | 1488 | 1343 |
| Fiction.LiveBench | — | 50% |

## Writing & Preference

- Muse Spark 1.3: 73.6 (#9)
- o3-mini: 50.3 (#182)

| Benchmark | Muse Spark 1.3 | o3-mini |
|---|---|---|
| LMArena Text | 1490 | 1337 |
| LMArena Creative Writing | 1455 | 1286 |
| LMArena Multi-Turn | 1482 | 1320 |
| Short-Story Creative Writing | — | 61.7% |
| EQ-Bench Creative Writing | 1906 | — |
| LiveBench Language | — | 50.7% |

## FAQ

### Is Muse Spark 1.3 better than o3-mini?

Muse Spark 1.3 is the stronger model overall, scoring 54.8 to 36.7 on the Noometry Index.

### Which is cheaper, Muse Spark 1.3 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 1.3 lists at $1.25 and $4.25.

### Is Muse Spark 1.3 or o3-mini better for coding?

Muse Spark 1.3 scores higher on coding benchmarks: 56.6 versus 40.8 in the Noometry coding category.

### Which has the bigger context window?

Muse Spark 1.3 does, with 1.05M tokens against 200K.

### How many benchmarks do Muse Spark 1.3 and o3-mini share?

27 benchmarks have published results for both models. Muse Spark 1.3 has 37 scored results on Noometry and o3-mini has 51.