# Devstral Small 2505 vs Muse Spark 1.2

> Muse Spark 1.2 is the stronger model overall, scoring 50.3 to 34.3 on the Noometry Index. Devstral Small 2505 costs 13× 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/devstral-small-vs-muse-spark-1-2
- Last updated: 2026-10-11
- Shared benchmarks: 2

## Summary

- They share 2 benchmarks with published results for both. Devstral Small 2505 scores higher in 0 categories and Muse Spark 1.2 in 2 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Muse Spark 1.2 leads 51.3 to 19.7.
- The biggest single-benchmark swing is SciCode: 28.8% for Devstral Small 2505 and 56.4% for Muse Spark 1.2.
- Devstral Small 2505 is cheaper at $0.10 / $0.30 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.
- Devstral Small 2505 has downloadable open weights; the other is API-only.

## Snapshot

| | Devstral Small 2505 | Muse Spark 1.2 |
|---|---|---|
| Provider | Mistral AI | Meta |
| Noometry Index | 34.3 | 50.3 |
| Rank | 233 | 48 |
| Context | 128K | 1.05M |
| Input $/M | $0.10 | $1.25 |
| Output $/M | $0.30 | $4.25 |
| Weights | Open | Proprietary |

## Coding

- Devstral Small 2505: 38.9 (#166)
- Muse Spark 1.2: 49.2 (#51)

| Benchmark | Devstral Small 2505 | Muse Spark 1.2 |
|---|---|---|
| SciCode | 28.8% | 56.4% |
| DeepSWE | — | 54.9% |
| SWE-bench Verified (bash only) | 56.4% | — |
| LMArena WebDev | — | 1533 |
| FrontierSWE | — | 12% |
| WeirdML | — | 60.3% |
| LMArena Coding | — | 1495 |

## Agentic & Tool Use

- Devstral Small 2505: —
- Muse Spark 1.2: 29.4 (#87)

| Benchmark | Devstral Small 2505 | Muse Spark 1.2 |
|---|---|---|
| APEX-Agents | — | 36.4% |
| GDP.pdf | — | 16% |

## Reasoning

- Devstral Small 2505: 19.7 (#252)
- Muse Spark 1.2: 51.3 (#34)

| Benchmark | Devstral Small 2505 | Muse Spark 1.2 |
|---|---|---|
| CritPt | 0% | 17.7% |
| SimpleBench | — | 74.5% |
| Kagi LLM Benchmark | 37.7% | — |
| NYT Connections (extended) | — | 79.2% |
| LMArena Hard Prompts | — | 1486 |
| DTBench | — | 94.7% |
| LMCA | — | 48.4% |
| Epoch Capabilities Index | — | 154.87 |

## Math

- Devstral Small 2505: —
- Muse Spark 1.2: 46.4 (#70)

| Benchmark | Devstral Small 2505 | Muse Spark 1.2 |
|---|---|---|
| ProofBench | — | 43% |
| LMArena Math | — | 1471 |

## Knowledge

- Devstral Small 2505: —
- Muse Spark 1.2: 54.1 (#53)

| Benchmark | Devstral Small 2505 | Muse Spark 1.2 |
|---|---|---|
| SimpleQA Verified | — | 60.3% |
| LMArena Expert | — | 1480 |

## Multimodal

- Devstral Small 2505: —
- Muse Spark 1.2: 43.4 (#25)

| Benchmark | Devstral Small 2505 | Muse Spark 1.2 |
|---|---|---|
| LMArena Vision | — | 1305 |

## Multilingual

- Devstral Small 2505: —
- Muse Spark 1.2: 57.1 (#11)

| Benchmark | Devstral Small 2505 | Muse Spark 1.2 |
|---|---|---|
| LMArena Non-English | — | 1478 |
| LMArena Chinese | — | 1511 |
| LMArena French | — | 1513 |
| LMArena Russian | — | 1487 |
| LMArena Spanish | — | 1498 |

## Instruction Following

- Devstral Small 2505: —
- Muse Spark 1.2: 76.7 (#36)

| Benchmark | Devstral Small 2505 | Muse Spark 1.2 |
|---|---|---|
| LMArena Instruction Following | — | 1461 |

## Long Context

- Devstral Small 2505: —
- Muse Spark 1.2: 45.2 (#48)

| Benchmark | Devstral Small 2505 | Muse Spark 1.2 |
|---|---|---|
| LMArena Longer Query | — | 1475 |

## Writing & Preference

- Devstral Small 2505: —
- Muse Spark 1.2: 72.3 (#14)

| Benchmark | Devstral Small 2505 | Muse Spark 1.2 |
|---|---|---|
| LMArena Text | — | 1482 |
| LMArena Creative Writing | — | 1449 |
| EQ-Bench Creative Writing | — | 1840 |
| LMArena Multi-Turn | — | 1494 |

## FAQ

### Is Devstral Small 2505 better than Muse Spark 1.2?

Muse Spark 1.2 is the stronger model overall, scoring 50.3 to 34.3 on the Noometry Index. Devstral Small 2505 costs 13× 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, Devstral Small 2505 or Muse Spark 1.2?

Devstral Small 2505 is cheaper. It lists at $0.10 per million input tokens and $0.30 per million output tokens; Muse Spark 1.2 lists at $1.25 and $4.25.

### Is Devstral Small 2505 or Muse Spark 1.2 better for coding?

Muse Spark 1.2 scores higher on coding benchmarks: 49.2 versus 38.9 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 Devstral Small 2505 and Muse Spark 1.2 share?

2 benchmarks have published results for both models. Devstral Small 2505 has 4 scored results on Noometry and Muse Spark 1.2 has 31.