# Chatgpt 4o Latest 20250326 vs Muse Spark

> Muse Spark is the stronger model overall, scoring 50.6 to 43.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/chatgpt-4o-vs-muse-spark
- Last updated: 2026-10-10
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. Chatgpt 4o Latest 20250326 scores higher in 0 categories and Muse Spark in 9 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Muse Spark leads 65.7 to 39.2.

## Snapshot

| | Chatgpt 4o Latest 20250326 | Muse Spark |
|---|---|---|
| Provider | OpenAI | Meta |
| Noometry Index | 43.8 | 50.6 |
| Rank | 82 | 46 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Proprietary |

## Coding

- Chatgpt 4o Latest 20250326: 41.6 (#122)
- Muse Spark: 46.2 (#69)

| Benchmark | Chatgpt 4o Latest 20250326 | Muse Spark |
|---|---|---|
| LMArena Coding | 1413 | 1481 |
| SciCode | — | 51.5% |

## Reasoning

- Chatgpt 4o Latest 20250326: 33.8 (#71)
- Muse Spark: 35.9 (#67)

| Benchmark | Chatgpt 4o Latest 20250326 | Muse Spark |
|---|---|---|
| LMArena Hard Prompts | 1424 | 1474 |
| Kagi LLM Benchmark | 75% | — |
| CritPt | — | 11.3% |
| Epoch Capabilities Index | — | 152.04 |

## Math

- Chatgpt 4o Latest 20250326: 38.6 (#134)
- Muse Spark: 47.8 (#66)

| Benchmark | Chatgpt 4o Latest 20250326 | Muse Spark |
|---|---|---|
| LMArena Math | 1407 | 1455 |
| OTIS Mock AIME 2024-2025 | — | 88.9% |
| ProofBench | — | 17% |
| FrontierMath (Feb 2025 set) | — | 39% |
| FrontierMath Tier 4 (v1) | — | 14.6% |

## Knowledge

- Chatgpt 4o Latest 20250326: 39.2 (#137)
- Muse Spark: 65.7 (#13)

| Benchmark | Chatgpt 4o Latest 20250326 | Muse Spark |
|---|---|---|
| LMArena Expert | 1401 | 1457 |
| GPQA Diamond | — | 89.8% |
| Humanity's Last Exam | — | 40.6% |
| Confabulations | 16.6% | — |

## Multimodal

- Chatgpt 4o Latest 20250326: 39.6 (#58)
- Muse Spark: 43.4 (#24)

| Benchmark | Chatgpt 4o Latest 20250326 | Muse Spark |
|---|---|---|
| LMArena Vision | 1243 | 1306 |
| LMArena Document | — | 1444 |

## Multilingual

- Chatgpt 4o Latest 20250326: 52.9 (#76)
- Muse Spark: 56.1 (#24)

| Benchmark | Chatgpt 4o Latest 20250326 | Muse Spark |
|---|---|---|
| LMArena Non-English | 1419 | 1464 |
| LMArena Chinese | 1457 | 1509 |
| LMArena French | 1446 | 1497 |
| LMArena German | 1423 | 1497 |
| LMArena Korean | 1396 | 1459 |
| LMArena Russian | 1429 | 1466 |
| LMArena Spanish | 1434 | 1472 |
| LMArena Japanese | 1405 | — |

## Instruction Following

- Chatgpt 4o Latest 20250326: 74.0 (#107)
- Muse Spark: 75.9 (#51)

| Benchmark | Chatgpt 4o Latest 20250326 | Muse Spark |
|---|---|---|
| LMArena Instruction Following | 1403 | 1442 |

## Long Context

- Chatgpt 4o Latest 20250326: 43.1 (#107)
- Muse Spark: 44.4 (#69)

| Benchmark | Chatgpt 4o Latest 20250326 | Muse Spark |
|---|---|---|
| LMArena Longer Query | 1413 | 1451 |

## Writing & Preference

- Chatgpt 4o Latest 20250326: 62.6 (#72)
- Muse Spark: 66.0 (#39)

| Benchmark | Chatgpt 4o Latest 20250326 | Muse Spark |
|---|---|---|
| LMArena Text | 1429 | 1474 |
| LMArena Creative Writing | 1405 | 1459 |
| LMArena Multi-Turn | 1454 | 1477 |
| EQ-Bench Creative Writing | 1501 | — |

## FAQ

### Is Chatgpt 4o Latest 20250326 better than Muse Spark?

Muse Spark is the stronger model overall, scoring 50.6 to 43.8 on the Noometry Index.

### Is Chatgpt 4o Latest 20250326 or Muse Spark better for coding?

Muse Spark scores higher on coding benchmarks: 46.2 versus 41.6 in the Noometry coding category.

### How many benchmarks do Chatgpt 4o Latest 20250326 and Muse Spark share?

17 benchmarks have published results for both models. Chatgpt 4o Latest 20250326 has 21 scored results on Noometry and Muse Spark has 27.