# Muse Spark 1.3 vs o3-pro

> Muse Spark 1.3 is the stronger model overall, scoring 54.8 to 42.9 on the Noometry Index.

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

## Summary

- They share 3 benchmarks with published results for both. Muse Spark 1.3 scores higher in 4 categories and o3-pro in 1 category; 5 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Muse Spark 1.3 leads 54.0 to 23.8.
- The biggest single-benchmark swing is LMCA: 53.9% for Muse Spark 1.3 and 38.5% for o3-pro.
- Muse Spark 1.3 is cheaper at $1.25 / $4.25 per million input/output tokens, against $20 / $80 for o3-pro.
- Muse Spark 1.3 accepts more context: 1.05M tokens versus 200K.

## Snapshot

| | Muse Spark 1.3 | o3-pro |
|---|---|---|
| Provider | Meta | OpenAI |
| Noometry Index | 54.8 | 42.9 |
| Rank | 27 | 105 |
| Context | 1.05M | 200K |
| Input $/M | $1.25 | $20 |
| Output $/M | $4.25 | $80 |
| Weights | Proprietary | Proprietary |

## Coding

- Muse Spark 1.3: 56.6 (#21)
- o3-pro: 55.5 (#24)

| Benchmark | Muse Spark 1.3 | o3-pro |
|---|---|---|
| Aider Polyglot | — | 84.9% |
| CursorBench | 41.6% | — |
| LMArena WebDev | 1657 | — |
| SciCode | 59.7% | — |
| WeirdML | — | 58.2% |
| LMArena Coding | 1514 | — |

## Agentic & Tool Use

- Muse Spark 1.3: 38.6 (#30)
- o3-pro: —

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

## Reasoning

- Muse Spark 1.3: 54.0 (#27)
- o3-pro: 23.8 (#171)

| Benchmark | Muse Spark 1.3 | o3-pro |
|---|---|---|
| DTBench | 96.5% | 86.9% |
| LMCA | 53.9% | 38.5% |
| Epoch Capabilities Index | 156.75 | 147.42 |
| ARC-AGI-2 | — | 4.9% |
| Kagi LLM Benchmark | — | 72.1% |
| NYT Connections (extended) | 85.1% | — |
| ARC-AGI-1 | — | 59.3% |
| CritPt | 26% | — |
| Chess Puzzles | 38% | — |
| LMArena Hard Prompts | 1503 | — |
| Mystery Game Puzzles | 25% | — |
| Bench to the Future 3 | 0.14 | — |

## Math

- Muse Spark 1.3: 73.1 (#21)
- o3-pro: —

| Benchmark | Muse Spark 1.3 | o3-pro |
|---|---|---|
| FrontierMath (Tiers 1-3) | 74.4% | — |
| FrontierMath Tier 4 | 46.3% | — |
| OTIS Mock AIME 2024-2025 | 99.2% | — |
| ProofBench | 58% | — |
| LMArena Math | 1494 | — |

## Knowledge

- Muse Spark 1.3: 42.6 (#95)
- o3-pro: 29.5 (#238)

| Benchmark | Muse Spark 1.3 | o3-pro |
|---|---|---|
| Confabulations | — | 14.2% |
| Vectara Hallucination Rate | — | 23.3% |
| LMArena Expert | 1516 | — |

## Multimodal

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

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

## Multilingual

- Muse Spark 1.3: 57.4 (#8)
- o3-pro: —

| Benchmark | Muse Spark 1.3 | o3-pro |
|---|---|---|
| LMArena Non-English | 1481 | — |
| LMArena Chinese | 1529 | — |
| LMArena French | 1524 | — |
| LMArena German | 1515 | — |
| LMArena Japanese | 1474 | — |
| LMArena Korean | 1501 | — |
| LMArena Russian | 1490 | — |
| LMArena Spanish | 1490 | — |

## Instruction Following

- Muse Spark 1.3: 77.5 (#22)
- o3-pro: —

| Benchmark | Muse Spark 1.3 | o3-pro |
|---|---|---|
| LMArena Instruction Following | 1477 | — |

## Long Context

- Muse Spark 1.3: 45.6 (#32)
- o3-pro: 72.2 (#1)

| Benchmark | Muse Spark 1.3 | o3-pro |
|---|---|---|
| Fiction.LiveBench | — | 97.2% |
| LMArena Longer Query | 1488 | — |

## Writing & Preference

- Muse Spark 1.3: 73.6 (#9)
- o3-pro: 57.1 (#133)

| Benchmark | Muse Spark 1.3 | o3-pro |
|---|---|---|
| LMArena Text | 1490 | — |
| LMArena Creative Writing | 1455 | — |
| Short-Story Creative Writing | — | 84.4% |
| EQ-Bench Creative Writing | 1906 | — |
| LMArena Multi-Turn | 1482 | — |

## FAQ

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

Muse Spark 1.3 is the stronger model overall, scoring 54.8 to 42.9 on the Noometry Index.

### Which is cheaper, Muse Spark 1.3 or o3-pro?

Muse Spark 1.3 is cheaper. It lists at $1.25 per million input tokens and $4.25 per million output tokens; o3-pro lists at $20 and $80.

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

Muse Spark 1.3 scores higher on coding benchmarks: 56.6 versus 55.5 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-pro share?

3 benchmarks have published results for both models. Muse Spark 1.3 has 37 scored results on Noometry and o3-pro has 12.