# Mercury 2 vs Muse Spark 1.2

> Muse Spark 1.2 is the stronger model overall, scoring 49.8 to 38.8 on the Noometry Index. Mercury 2 costs 5.3× less per token, which makes it the better buy when Muse Spark 1.2's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/mercury-2-vs-muse-spark-1-2
- Last updated: 2026-10-10
- Shared benchmarks: 15

## Summary

- They share 15 benchmarks with published results for both. Mercury 2 scores higher in 0 categories and Muse Spark 1.2 in 7 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Muse Spark 1.2 leads 50.4 to 23.0.
- The biggest single-benchmark swing is SciCode: 38.7% for Mercury 2 and 56.4% for Muse Spark 1.2.
- Mercury 2 is cheaper at $0.25 / $0.75 per million input/output tokens, against $1.25 / $4.25 for Muse Spark 1.2.
- Muse Spark 1.2 accepts more context: 1.05M tokens versus 128K.

## Snapshot

| | Mercury 2 | Muse Spark 1.2 |
|---|---|---|
| Provider | Inception | Meta |
| Noometry Index | 38.8 | 49.8 |
| Rank | 167 | 44 |
| 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 1.2: 48.6 (#49)

| Benchmark | Mercury 2 | Muse Spark 1.2 |
|---|---|---|
| LMArena WebDev | 1170 | 1532 |
| SciCode | 38.7% | 56.4% |
| WeirdML | 43.2% | 60.3% |
| LMArena Coding | 1391 | 1497 |
| DeepSWE | — | 54.9% |
| FrontierSWE | — | 12% |
| ALE-Bench | 785.58 | — |

## Agentic & Tool Use

- Mercury 2: —
- Muse Spark 1.2: 29.5 (#77)

| Benchmark | Mercury 2 | Muse Spark 1.2 |
|---|---|---|
| APEX-Agents | — | 36.4% |
| GDP.pdf | — | 16% |

## Reasoning

- Mercury 2: 23.0 (#170)
- Muse Spark 1.2: 50.4 (#32)

| Benchmark | Mercury 2 | Muse Spark 1.2 |
|---|---|---|
| CritPt | 0.8% | 17.7% |
| LMArena Hard Prompts | 1362 | 1490 |
| SimpleBench | — | 74.5% |
| NYT Connections (extended) | — | 79.2% |
| DTBench | — | 94.7% |
| LMCA | — | 48.4% |
| Epoch Capabilities Index | — | 155.18 |

## Math

- Mercury 2: —
- Muse Spark 1.2: 43.8 (#68)

| Benchmark | Mercury 2 | Muse Spark 1.2 |
|---|---|---|
| ProofBench | — | 43% |

## Knowledge

- Mercury 2: 35.6 (#170)
- Muse Spark 1.2: 53.9 (#49)

| Benchmark | Mercury 2 | Muse Spark 1.2 |
|---|---|---|
| LMArena Expert | 1358 | 1485 |
| SimpleQA Verified | — | 60.3% |
| Vectara Hallucination Rate | 12.3% | — |

## Multimodal

- Mercury 2: —
- Muse Spark 1.2: 42.6 (#24)

| Benchmark | Mercury 2 | Muse Spark 1.2 |
|---|---|---|
| LMArena Vision | — | 1304 |

## Multilingual

- Mercury 2: 46.8 (#153)
- Muse Spark 1.2: 57.4 (#10)

| Benchmark | Mercury 2 | Muse Spark 1.2 |
|---|---|---|
| LMArena Non-English | 1331 | 1479 |
| LMArena Chinese | 1416 | 1519 |
| LMArena Russian | 1303 | 1494 |

## Instruction Following

- Mercury 2: 70.4 (#161)
- Muse Spark 1.2: 77.1 (#30)

| Benchmark | Mercury 2 | Muse Spark 1.2 |
|---|---|---|
| LMArena Instruction Following | 1328 | 1466 |

## Long Context

- Mercury 2: 40.4 (#149)
- Muse Spark 1.2: 45.4 (#35)

| Benchmark | Mercury 2 | Muse Spark 1.2 |
|---|---|---|
| LMArena Longer Query | 1329 | 1483 |

## Writing & Preference

- Mercury 2: 54.0 (#151)
- Muse Spark 1.2: 72.6 (#14)

| Benchmark | Mercury 2 | Muse Spark 1.2 |
|---|---|---|
| LMArena Text | 1355 | 1486 |
| LMArena Creative Writing | 1289 | 1444 |
| LMArena Multi-Turn | 1358 | 1504 |
| EQ-Bench Creative Writing | — | 1840 |

## FAQ

### Is Mercury 2 better than Muse Spark 1.2?

Muse Spark 1.2 is the stronger model overall, scoring 49.8 to 38.8 on the Noometry Index. Mercury 2 costs 5.3× less per token, which makes it the better buy when Muse Spark 1.2's lead doesn't matter for your workload.

### Which is cheaper, Mercury 2 or Muse Spark 1.2?

Mercury 2 is cheaper. It lists at $0.25 per million input tokens and $0.75 per million output tokens; Muse Spark 1.2 lists at $1.25 and $4.25.

### Is Mercury 2 or Muse Spark 1.2 better for coding?

Muse Spark 1.2 scores higher on coding benchmarks: 48.6 versus 33.2 in the Noometry coding category.

### Which has the bigger context window?

Muse Spark 1.2 does, with 1.05M tokens against 128K.

### How many benchmarks do Mercury 2 and Muse Spark 1.2 share?

15 benchmarks have published results for both models. Mercury 2 has 17 scored results on Noometry and Muse Spark 1.2 has 28.