# Mercury 2 vs Muse Spark 1.3

> Muse Spark 1.3 is the stronger model overall, scoring 54.4 to 38.8 on the Noometry Index. Mercury 2 costs 5.3× less per token, which makes it the better buy when Muse Spark 1.3's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/mercury-2-vs-muse-spark-1-3
- Last updated: 2026-10-10
- Shared benchmarks: 14

## Summary

- They share 14 benchmarks with published results for both. Mercury 2 scores higher in 0 categories and Muse Spark 1.3 in 7 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Muse Spark 1.3 leads 52.9 to 23.0.
- The biggest single-benchmark swing is CritPt: 0.8% for Mercury 2 and 24.9% for Muse Spark 1.3.
- Mercury 2 is cheaper at $0.25 / $0.75 per million input/output tokens, against $1.25 / $4.25 for Muse Spark 1.3.
- Muse Spark 1.3 accepts more context: 1.05M tokens versus 128K.

## Snapshot

| | Mercury 2 | Muse Spark 1.3 |
|---|---|---|
| Provider | Inception | Meta |
| Noometry Index | 38.8 | 54.4 |
| Rank | 167 | 27 |
| Context | 128K | 1.05M |
| Input $/M | $0.25 | $1.25 |
| Output $/M | $0.75 | $4.25 |
| Weights | Proprietary | Proprietary |

## Coding

- Mercury 2: 33.2 (#250)
- Muse Spark 1.3: 56.1 (#18)

| Benchmark | Mercury 2 | Muse Spark 1.3 |
|---|---|---|
| LMArena WebDev | 1170 | 1655 |
| SciCode | 38.7% | 59.7% |
| LMArena Coding | 1391 | 1516 |
| CursorBench | — | 41.6% |
| WeirdML | 43.2% | — |
| ALE-Bench | 785.58 | — |

## Agentic & Tool Use

- Mercury 2: —
- Muse Spark 1.3: 38.6 (#28)

| Benchmark | Mercury 2 | Muse Spark 1.3 |
|---|---|---|
| APEX-Agents | — | 57.8% |
| GDP.pdf | — | 27.6% |

## Reasoning

- Mercury 2: 23.0 (#170)
- Muse Spark 1.3: 52.9 (#27)

| Benchmark | Mercury 2 | Muse Spark 1.3 |
|---|---|---|
| CritPt | 0.8% | 24.9% |
| LMArena Hard Prompts | 1362 | 1503 |
| NYT Connections (extended) | — | 85.1% |
| Chess Puzzles | — | 38% |
| Mystery Game Puzzles | — | 25% |
| DTBench | — | 96.5% |
| LMCA | — | 53.9% |
| Bench to the Future 3 | — | 0.14 |
| Epoch Capabilities Index | — | 156.89 |

## Math

- Mercury 2: —
- Muse Spark 1.3: 72.4 (#16)

| Benchmark | Mercury 2 | Muse Spark 1.3 |
|---|---|---|
| FrontierMath (Tiers 1-3) | — | 74.4% |
| FrontierMath Tier 4 | — | 46.3% |
| OTIS Mock AIME 2024-2025 | — | 99.2% |
| LMArena Math | — | 1497 |

## Knowledge

- Mercury 2: 35.6 (#170)
- Muse Spark 1.3: 42.0 (#92)

| Benchmark | Mercury 2 | Muse Spark 1.3 |
|---|---|---|
| LMArena Expert | 1358 | 1516 |
| Vectara Hallucination Rate | 12.3% | — |

## Multimodal

- Mercury 2: —
- Muse Spark 1.3: 43.0 (#21)

| Benchmark | Mercury 2 | Muse Spark 1.3 |
|---|---|---|
| LMArena Vision | — | 1310 |
| LMArena Document | — | 1471 |

## Multilingual

- Mercury 2: 46.8 (#153)
- Muse Spark 1.3: 57.8 (#6)

| Benchmark | Mercury 2 | Muse Spark 1.3 |
|---|---|---|
| LMArena Non-English | 1331 | 1485 |
| LMArena Chinese | 1416 | 1527 |
| LMArena Russian | 1303 | 1491 |
| LMArena French | — | 1534 |
| LMArena Korean | — | 1513 |
| LMArena Spanish | — | 1485 |

## Instruction Following

- Mercury 2: 70.4 (#161)
- Muse Spark 1.3: 77.8 (#14)

| Benchmark | Mercury 2 | Muse Spark 1.3 |
|---|---|---|
| LMArena Instruction Following | 1328 | 1481 |

## Long Context

- Mercury 2: 40.4 (#149)
- Muse Spark 1.3: 45.7 (#29)

| Benchmark | Mercury 2 | Muse Spark 1.3 |
|---|---|---|
| LMArena Longer Query | 1329 | 1491 |

## Writing & Preference

- Mercury 2: 54.0 (#151)
- Muse Spark 1.3: 73.7 (#10)

| Benchmark | Mercury 2 | Muse Spark 1.3 |
|---|---|---|
| LMArena Text | 1355 | 1490 |
| LMArena Creative Writing | 1289 | 1450 |
| LMArena Multi-Turn | 1358 | 1486 |
| EQ-Bench Creative Writing | — | 1906 |

## FAQ

### Is Mercury 2 better than Muse Spark 1.3?

Muse Spark 1.3 is the stronger model overall, scoring 54.4 to 38.8 on the Noometry Index. Mercury 2 costs 5.3× less per token, which makes it the better buy when Muse Spark 1.3's lead doesn't matter for your workload.

### Which is cheaper, Mercury 2 or Muse Spark 1.3?

Mercury 2 is cheaper. It lists at $0.25 per million input tokens and $0.75 per million output tokens; Muse Spark 1.3 lists at $1.25 and $4.25.

### Is Mercury 2 or Muse Spark 1.3 better for coding?

Muse Spark 1.3 scores higher on coding benchmarks: 56.1 versus 33.2 in the Noometry coding category.

### Which has the bigger context window?

Muse Spark 1.3 does, with 1.05M tokens against 128K.

### How many benchmarks do Mercury 2 and Muse Spark 1.3 share?

14 benchmarks have published results for both models. Mercury 2 has 17 scored results on Noometry and Muse Spark 1.3 has 34.