# Devstral Small 2505 vs Grok-3 mini

> Grok-3 mini is the stronger model overall, scoring 41.2 to 34.3 on the Noometry Index.

- Canonical page: https://noometry.com/compare/devstral-small-vs-grok-3-mini
- Last updated: 2026-10-11
- Shared benchmarks: 1

## Summary

- They share 1 benchmark with published results for both. Devstral Small 2505 scores higher in 1 category and Grok-3 mini in 1 category; 2 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Devstral Small 2505 leads 19.7 to 13.6.
- The biggest single-benchmark swing is Kagi LLM Benchmark: 37.7% for Devstral Small 2505 and 61.3% for Grok-3 mini.
- Devstral Small 2505 has downloadable open weights; the other is API-only.

## Snapshot

| | Devstral Small 2505 | Grok-3 mini |
|---|---|---|
| Provider | Mistral AI | xAI |
| Noometry Index | 34.3 | 41.2 |
| Rank | 233 | 141 |
| Context | 128K | — |
| Input $/M | $0.10 | — |
| Output $/M | $0.30 | — |
| Weights | Open | Proprietary |

## Coding

- Devstral Small 2505: 38.9 (#166)
- Grok-3 mini: 40.8 (#131)

| Benchmark | Devstral Small 2505 | Grok-3 mini |
|---|---|---|
| SWE-bench Verified (bash only) | 56.4% | — |
| Aider Polyglot | — | 49.3% |
| SciCode | 28.8% | — |
| WeirdML | — | 42.6% |
| LMArena Coding | — | 1379 |

## Reasoning

- Devstral Small 2505: 19.7 (#252)
- Grok-3 mini: 13.6 (#334)

| Benchmark | Devstral Small 2505 | Grok-3 mini |
|---|---|---|
| Kagi LLM Benchmark | 37.7% | 61.3% |
| ARC-AGI-2 | — | 0.4% |
| ARC-AGI-1 | — | 16.5% |
| CritPt | 0% | — |
| LMArena Hard Prompts | — | 1375 |
| Epoch Capabilities Index | — | 140.35 |

## Math

- Devstral Small 2505: —
- Grok-3 mini: 42.1 (#85)

| Benchmark | Devstral Small 2505 | Grok-3 mini |
|---|---|---|
| OTIS Mock AIME 2024-2025 | — | 77.8% |
| Omni-MATH | — | 31.8% |
| LMArena Math | — | 1386 |
| MATH Level 5 | — | 90.9% |
| FrontierMath (Feb 2025 set) | — | 5.9% |

## Knowledge

- Devstral Small 2505: —
- Grok-3 mini: 46.4 (#81)

| Benchmark | Devstral Small 2505 | Grok-3 mini |
|---|---|---|
| GPQA Diamond | — | 76.3% |
| MMLU-Pro | — | 79.9% |
| Confabulations | — | 10.8% |
| GPQA (HELM) | — | 67.5% |
| LMArena Expert | — | 1395 |

## Multilingual

- Devstral Small 2505: —
- Grok-3 mini: 48.1 (#145)

| Benchmark | Devstral Small 2505 | Grok-3 mini |
|---|---|---|
| LMArena Non-English | — | 1352 |
| LMArena Chinese | — | 1387 |
| LMArena French | — | 1357 |
| LMArena German | — | 1349 |
| LMArena Japanese | — | 1342 |
| LMArena Korean | — | 1335 |
| LMArena Russian | — | 1353 |
| LMArena Spanish | — | 1381 |

## Instruction Following

- Devstral Small 2505: —
- Grok-3 mini: 78.5 (#9)

| Benchmark | Devstral Small 2505 | Grok-3 mini |
|---|---|---|
| IFEval | — | 95.1% |
| LMArena Instruction Following | — | 1357 |

## Long Context

- Devstral Small 2505: —
- Grok-3 mini: 41.0 (#147)

| Benchmark | Devstral Small 2505 | Grok-3 mini |
|---|---|---|
| Fiction.LiveBench | — | 66.7% |
| LMArena Longer Query | — | 1372 |

## Writing & Preference

- Devstral Small 2505: —
- Grok-3 mini: 52.5 (#169)

| Benchmark | Devstral Small 2505 | Grok-3 mini |
|---|---|---|
| LMArena Text | — | 1370 |
| LMArena Creative Writing | — | 1342 |
| Short-Story Creative Writing | — | 73.5% |
| WildBench | — | 65.1% |
| LMArena Multi-Turn | — | 1355 |

## FAQ

### Is Devstral Small 2505 better than Grok-3 mini?

Grok-3 mini is the stronger model overall, scoring 41.2 to 34.3 on the Noometry Index.

### Is Devstral Small 2505 or Grok-3 mini better for coding?

Grok-3 mini scores higher on coding benchmarks: 40.8 versus 38.9 in the Noometry coding category.

### How many benchmarks do Devstral Small 2505 and Grok-3 mini share?

1 benchmark has published results for both models. Devstral Small 2505 has 4 scored results on Noometry and Grok-3 mini has 35.