# MiMo-V2.5 vs Muse Spark 1.2

> Muse Spark 1.2 is the stronger model overall, scoring 49.8 to 43.0 on the Noometry Index. MiMo-V2.5 costs 11× 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/mimo-v2-5-vs-muse-spark-1-2
- Last updated: 2026-10-10
- Shared benchmarks: 16

## Summary

- They share 16 benchmarks with published results for both. MiMo-V2.5 scores higher in 0 categories and Muse Spark 1.2 in 9 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Muse Spark 1.2 leads 50.4 to 27.8.
- The biggest single-benchmark swing is ProofBench: 16% for MiMo-V2.5 and 43% for Muse Spark 1.2.
- MiMo-V2.5 is cheaper at $0.14 / $0.28 per million input/output tokens, against $1.25 / $4.25 for Muse Spark 1.2.
- MiMo-V2.5 has downloadable open weights; the other is API-only.

## Snapshot

| | MiMo-V2.5 | Muse Spark 1.2 |
|---|---|---|
| Provider | Xiaomi | Meta |
| Noometry Index | 43.0 | 49.8 |
| Rank | 89 | 44 |
| Context | 1.05M | 1.05M |
| Input $/M | $0.14 | $1.25 |
| Output $/M | $0.28 | $4.25 |
| Weights | Open | Proprietary |

## Coding

- MiMo-V2.5: 43.6 (#75)
- Muse Spark 1.2: 48.6 (#49)

| Benchmark | MiMo-V2.5 | Muse Spark 1.2 |
|---|---|---|
| LMArena WebDev | 1438 | 1532 |
| SciCode | 43.1% | 56.4% |
| LMArena Coding | 1469 | 1497 |
| DeepSWE | — | 54.9% |
| FrontierSWE | — | 12% |
| WeirdML | — | 60.3% |
| ALE-Bench | 513.95 | — |

## Agentic & Tool Use

- MiMo-V2.5: —
- Muse Spark 1.2: 29.5 (#77)

| Benchmark | MiMo-V2.5 | Muse Spark 1.2 |
|---|---|---|
| APEX-Agents | — | 36.4% |
| GDP.pdf | — | 16% |

## Reasoning

- MiMo-V2.5: 27.8 (#98)
- Muse Spark 1.2: 50.4 (#32)

| Benchmark | MiMo-V2.5 | Muse Spark 1.2 |
|---|---|---|
| CritPt | 3.7% | 17.7% |
| LMArena Hard Prompts | 1450 | 1490 |
| SimpleBench | — | 74.5% |
| NYT Connections (extended) | — | 79.2% |
| DTBench | — | 94.7% |
| LMCA | — | 48.4% |
| Epoch Capabilities Index | — | 155.18 |

## Math

- MiMo-V2.5: 35.4 (#145)
- Muse Spark 1.2: 43.8 (#68)

| Benchmark | MiMo-V2.5 | Muse Spark 1.2 |
|---|---|---|
| ProofBench | 16% | 43% |
| LMArena Math | 1436 | — |

## Knowledge

- MiMo-V2.5: 40.2 (#109)
- Muse Spark 1.2: 53.9 (#49)

| Benchmark | MiMo-V2.5 | Muse Spark 1.2 |
|---|---|---|
| LMArena Expert | 1459 | 1485 |
| SimpleQA Verified | — | 60.3% |

## Multimodal

- MiMo-V2.5: 39.0 (#53)
- Muse Spark 1.2: 42.6 (#24)

| Benchmark | MiMo-V2.5 | Muse Spark 1.2 |
|---|---|---|
| LMArena Vision | 1245 | 1304 |

## Multilingual

- MiMo-V2.5: 52.0 (#96)
- Muse Spark 1.2: 57.4 (#10)

| Benchmark | MiMo-V2.5 | Muse Spark 1.2 |
|---|---|---|
| LMArena Non-English | 1404 | 1479 |
| LMArena Chinese | 1467 | 1519 |
| LMArena Russian | 1395 | 1494 |
| LMArena French | 1447 | — |
| LMArena German | 1421 | — |
| LMArena Japanese | 1304 | — |
| LMArena Korean | 1363 | — |
| LMArena Spanish | 1412 | — |

## Instruction Following

- MiMo-V2.5: 75.7 (#55)
- Muse Spark 1.2: 77.1 (#30)

| Benchmark | MiMo-V2.5 | Muse Spark 1.2 |
|---|---|---|
| LMArena Instruction Following | 1433 | 1466 |

## Long Context

- MiMo-V2.5: 44.1 (#69)
- Muse Spark 1.2: 45.4 (#35)

| Benchmark | MiMo-V2.5 | Muse Spark 1.2 |
|---|---|---|
| LMArena Longer Query | 1444 | 1483 |

## Writing & Preference

- MiMo-V2.5: 61.8 (#82)
- Muse Spark 1.2: 72.6 (#14)

| Benchmark | MiMo-V2.5 | Muse Spark 1.2 |
|---|---|---|
| LMArena Text | 1427 | 1486 |
| LMArena Creative Writing | 1392 | 1444 |
| LMArena Multi-Turn | 1445 | 1504 |
| EQ-Bench Creative Writing | — | 1840 |

## FAQ

### Is MiMo-V2.5 better than Muse Spark 1.2?

Muse Spark 1.2 is the stronger model overall, scoring 49.8 to 43.0 on the Noometry Index. MiMo-V2.5 costs 11× 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, MiMo-V2.5 or Muse Spark 1.2?

MiMo-V2.5 is cheaper. It lists at $0.14 per million input tokens and $0.28 per million output tokens; Muse Spark 1.2 lists at $1.25 and $4.25.

### Is MiMo-V2.5 or Muse Spark 1.2 better for coding?

Muse Spark 1.2 scores higher on coding benchmarks: 48.6 versus 43.6 in the Noometry coding category.

### Which has the bigger context window?

Both accept 1.05M tokens.

### How many benchmarks do MiMo-V2.5 and Muse Spark 1.2 share?

16 benchmarks have published results for both models. MiMo-V2.5 has 23 scored results on Noometry and Muse Spark 1.2 has 28.