Model comparison
Devstral Small 2505 vs Muse Spark
Muse Spark is the stronger model overall, scoring 50.6 to 34.3 on the Noometry Index.
Last verified . 2 shared benchmarks.
Mistral AI
MetaSummary
- They share 2 benchmarks with published results for both. Devstral Small 2505 scores higher in 0 categories and Muse Spark in 2 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Muse Spark leads 35.9 to 19.7.
- The biggest single-benchmark swing is SciCode: 28.8% for Devstral Small 2505 and 51.5% for Muse Spark.
- Devstral Small 2505 has downloadable open weights; the other is API-only.
Side by side
| Devstral Small 2505 | Muse Spark | |
|---|---|---|
| Provider | Mistral AI | Meta |
| Noometry Index | 34.3 | 50.6 |
| Released | 2025-05-07 | 2026-04-08 |
| Weights | Open | Proprietary |
| Context window | 128K | — |
| Max output | 128K | — |
| Input $ / M tokens | $0.10 | — |
| Output $ / M tokens | $0.30 | — |
| Results tracked | 4 | 27 |
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Category by category
Coding Muse Spark leads
Devstral Small 2505: 38.9 (#166), Muse Spark: 46.2 (#69)
| Benchmark | Devstral Small 2505 | Muse Spark |
|---|---|---|
| SciCode | 28.8% | 51.5% |
| SWE-bench Verified (bash only) | 56.4% | — |
| LMArena Coding | — | 1481 |
Reasoning Muse Spark leads
Devstral Small 2505: 19.7 (#252), Muse Spark: 35.9 (#67)
| Benchmark | Devstral Small 2505 | Muse Spark |
|---|---|---|
| CritPt | 0% | 11.3% |
| Kagi LLM Benchmark | 37.7% | — |
| LMArena Hard Prompts | — | 1474 |
| Epoch Capabilities Index | — | 152.04 |
Math Not comparable
Devstral Small 2505: —, Muse Spark: 47.8 (#66)
| Benchmark | Devstral Small 2505 | 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 Not comparable
Devstral Small 2505: —, Muse Spark: 65.7 (#13)
| Benchmark | Devstral Small 2505 | Muse Spark |
|---|---|---|
| GPQA Diamond | — | 89.8% |
| Humanity's Last Exam | — | 40.6% |
| LMArena Expert | — | 1457 |
Multimodal Not comparable
Devstral Small 2505: —, Muse Spark: 43.4 (#24)
| Benchmark | Devstral Small 2505 | Muse Spark |
|---|---|---|
| LMArena Vision | — | 1306 |
| LMArena Document | — | 1444 |
Multilingual Not comparable
Devstral Small 2505: —, Muse Spark: 56.1 (#24)
| Benchmark | Devstral Small 2505 | Muse Spark |
|---|---|---|
| LMArena Non-English | — | 1464 |
| LMArena Chinese | — | 1509 |
| LMArena French | — | 1497 |
| LMArena German | — | 1497 |
| LMArena Korean | — | 1459 |
| LMArena Russian | — | 1466 |
| LMArena Spanish | — | 1472 |
Instruction Following Not comparable
Devstral Small 2505: —, Muse Spark: 75.9 (#51)
| Benchmark | Devstral Small 2505 | Muse Spark |
|---|---|---|
| LMArena Instruction Following | — | 1442 |
Long Context Not comparable
Devstral Small 2505: —, Muse Spark: 44.4 (#69)
| Benchmark | Devstral Small 2505 | Muse Spark |
|---|---|---|
| LMArena Longer Query | — | 1451 |
Writing & Preference Not comparable
Devstral Small 2505: —, Muse Spark: 66.0 (#39)
| Benchmark | Devstral Small 2505 | Muse Spark |
|---|---|---|
| LMArena Text | — | 1474 |
| LMArena Creative Writing | — | 1459 |
| LMArena Multi-Turn | — | 1477 |
Frequently asked questions
Is Devstral Small 2505 better than Muse Spark?
Muse Spark is the stronger model overall, scoring 50.6 to 34.3 on the Noometry Index.
Is Devstral Small 2505 or Muse Spark better for coding?
Muse Spark scores higher on coding benchmarks: 46.2 versus 38.9 in the Noometry coding category.
How many benchmarks do Devstral Small 2505 and Muse Spark share?
2 benchmarks have published results for both models. Devstral Small 2505 has 4 scored results on Noometry and Muse Spark has 27.