# Mercury 2 vs Muse Spark

> Muse Spark is the stronger model overall, scoring 50.6 to 39.1 on the Noometry Index.

- Canonical page: https://noometry.com/compare/mercury-2-vs-muse-spark
- Last updated: 2026-10-11
- Shared benchmarks: 13

## Summary

- They share 13 benchmarks with published results for both. Mercury 2 scores higher in 0 categories and Muse Spark in 7 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Muse Spark leads 65.7 to 36.2.
- The biggest single-benchmark swing is SciCode: 38.7% for Mercury 2 and 51.5% for Muse Spark.

## Snapshot

| | Mercury 2 | Muse Spark |
|---|---|---|
| Provider | Inception | Meta |
| Noometry Index | 39.1 | 50.6 |
| Rank | 175 | 46 |
| Context | 128K | — |
| Input $/M | $0.25 | — |
| Output $/M | $0.75 | — |
| Weights | Proprietary | Proprietary |

## Coding

- Mercury 2: 33.5 (#255)
- Muse Spark: 46.2 (#69)

| Benchmark | Mercury 2 | Muse Spark |
|---|---|---|
| SciCode | 38.7% | 51.5% |
| LMArena Coding | 1391 | 1481 |
| LMArena WebDev | 1171 | — |
| WeirdML | 43.2% | — |
| ALE-Bench | 785.58 | — |

## Reasoning

- Mercury 2: 23.8 (#170)
- Muse Spark: 35.9 (#67)

| Benchmark | Mercury 2 | Muse Spark |
|---|---|---|
| CritPt | 0.8% | 11.3% |
| LMArena Hard Prompts | 1362 | 1474 |
| Epoch Capabilities Index | — | 152.04 |

## Math

- Mercury 2: —
- Muse Spark: 47.8 (#66)

| Benchmark | Mercury 2 | Muse Spark |
|---|---|---|
| OTIS Mock AIME 2024-2025 | — | 88.9% |
| ProofBench | — | 17% |
| LMArena Math | — | 1455 |
| FrontierMath (Feb 2025 set) | — | 39% |
| FrontierMath Tier 4 (v1) | — | 14.6% |

## Knowledge

- Mercury 2: 36.2 (#172)
- Muse Spark: 65.7 (#13)

| Benchmark | Mercury 2 | Muse Spark |
|---|---|---|
| LMArena Expert | 1358 | 1457 |
| GPQA Diamond | — | 89.8% |
| Humanity's Last Exam | — | 40.6% |
| Vectara Hallucination Rate | 12.3% | — |

## Multimodal

- Mercury 2: —
- Muse Spark: 43.4 (#24)

| Benchmark | Mercury 2 | Muse Spark |
|---|---|---|
| LMArena Vision | — | 1306 |
| LMArena Document | — | 1444 |

## Multilingual

- Mercury 2: 46.6 (#157)
- Muse Spark: 56.1 (#24)

| Benchmark | Mercury 2 | Muse Spark |
|---|---|---|
| LMArena Non-English | 1331 | 1464 |
| LMArena Chinese | 1417 | 1509 |
| LMArena Russian | 1304 | 1466 |
| LMArena French | — | 1497 |
| LMArena German | — | 1497 |
| LMArena Korean | — | 1459 |
| LMArena Spanish | — | 1472 |

## Instruction Following

- Mercury 2: 70.2 (#165)
- Muse Spark: 75.9 (#51)

| Benchmark | Mercury 2 | Muse Spark |
|---|---|---|
| LMArena Instruction Following | 1329 | 1442 |

## Long Context

- Mercury 2: 40.5 (#154)
- Muse Spark: 44.4 (#69)

| Benchmark | Mercury 2 | Muse Spark |
|---|---|---|
| LMArena Longer Query | 1330 | 1451 |

## Writing & Preference

- Mercury 2: 53.8 (#155)
- Muse Spark: 66.0 (#39)

| Benchmark | Mercury 2 | Muse Spark |
|---|---|---|
| LMArena Text | 1355 | 1474 |
| LMArena Creative Writing | 1289 | 1459 |
| LMArena Multi-Turn | 1358 | 1477 |

## FAQ

### Is Mercury 2 better than Muse Spark?

Muse Spark is the stronger model overall, scoring 50.6 to 39.1 on the Noometry Index.

### Is Mercury 2 or Muse Spark better for coding?

Muse Spark scores higher on coding benchmarks: 46.2 versus 33.5 in the Noometry coding category.

### How many benchmarks do Mercury 2 and Muse Spark share?

13 benchmarks have published results for both models. Mercury 2 has 17 scored results on Noometry and Muse Spark has 27.