# Grok 4 vs Mistral Small 3.1

> Grok 4 is the stronger model overall, scoring 47.8 to 31.4 on the Noometry Index.

- Canonical page: https://noometry.com/compare/grok-4-vs-mistral-small-3-1
- Last updated: 2026-10-10
- Shared benchmarks: 27

## Summary

- They share 27 benchmarks with published results for both. Grok 4 scores higher in 9 categories and Mistral Small 3.1 in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Grok 4 leads 46.5 to 13.7.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 84% for Grok 4 and 3.9% for Mistral Small 3.1.
- Mistral Small 3.1 has downloadable open weights; the other is API-only.

## Snapshot

| | Grok 4 | Mistral Small 3.1 |
|---|---|---|
| Provider | xAI | Mistral AI |
| Noometry Index | 47.8 | 31.4 |
| Rank | 49 | 263 |
| Context | — | 128K |
| Input $/M | — | $0.35 |
| Output $/M | — | $0.56 |
| Weights | Proprietary | Open |

## Coding

- Grok 4: 49.9 (#44)
- Mistral Small 3.1: 37.7 (#175)

| Benchmark | Grok 4 | Mistral Small 3.1 |
|---|---|---|
| LMArena Coding | 1408 | 1309 |
| Aider Polyglot | 79.6% | — |
| WeirdML | 45.7% | — |

## Agentic & Tool Use

- Grok 4: 32.1 (#62)
- Mistral Small 3.1: —

| Benchmark | Grok 4 | Mistral Small 3.1 |
|---|---|---|
| Terminal-Bench | 27.2% | — |
| Berkeley Function Calling Leaderboard | 63% | — |
| GDPval | 21.1% | — |
| Cybench | 43% | — |
| DeepResearch Bench | 47.3% | — |
| BALROG | 43.6% | — |
| LMArena Search | 1142 | — |
| METR Time Horizons | 66.6% | — |

## Reasoning

- Grok 4: 36.9 (#59)
- Mistral Small 3.1: 18.9 (#249)

| Benchmark | Grok 4 | Mistral Small 3.1 |
|---|---|---|
| Chess Puzzles | 28% | 1% |
| LMArena Hard Prompts | 1409 | 1278 |
| Epoch Capabilities Index | 146.46 | 127.48 |
| ARC-AGI-2 | 16% | — |
| SimpleBench | 60.5% | — |
| Kagi LLM Benchmark | 73.6% | — |
| ARC-AGI-1 | 66.7% | — |
| ForecastBench | 60.9 | — |

## Math

- Grok 4: 46.5 (#58)
- Mistral Small 3.1: 13.7 (#295)

| Benchmark | Grok 4 | Mistral Small 3.1 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 84% | 3.9% |
| Omni-MATH | 60.3% | 24.8% |
| LMArena Math | 1422 | 1261 |
| FrontierMath (Feb 2025 set) | 19.7% | — |
| FrontierMath Tier 4 (v1) | 2.1% | — |

## Knowledge

- Grok 4: 53.7 (#50)
- Mistral Small 3.1: 22.6 (#266)

| Benchmark | Grok 4 | Mistral Small 3.1 |
|---|---|---|
| GPQA Diamond | 87% | 41.9% |
| MMLU-Pro | 85.1% | 61% |
| GPQA (HELM) | 72.7% | 39.2% |
| LMArena Expert | 1417 | 1258 |
| Confabulations | 12.4% | — |

## Multimodal

- Grok 4: 33.1 (#89)
- Mistral Small 3.1: 32.6 (#93)

| Benchmark | Grok 4 | Mistral Small 3.1 |
|---|---|---|
| LMArena Vision | 1211 | 1136 |
| GeoBench | 45% | — |

## Multilingual

- Grok 4: 52.0 (#98)
- Mistral Small 3.1: 41.4 (#204)

| Benchmark | Grok 4 | Mistral Small 3.1 |
|---|---|---|
| LMArena Non-English | 1403 | 1255 |
| LMArena Chinese | 1428 | 1254 |
| LMArena French | 1418 | 1270 |
| LMArena German | 1429 | 1266 |
| LMArena Japanese | 1396 | 1210 |
| LMArena Korean | 1376 | 1206 |
| LMArena Russian | 1409 | 1263 |
| LMArena Spanish | 1419 | 1283 |

## Instruction Following

- Grok 4: 79.4 (#4)
- Mistral Small 3.1: 63.8 (#225)

| Benchmark | Grok 4 | Mistral Small 3.1 |
|---|---|---|
| IFEval | 94.9% | 75% |
| LMArena Instruction Following | 1387 | 1264 |

## Long Context

- Grok 4: 63.1 (#4)
- Mistral Small 3.1: 39.5 (#172)

| Benchmark | Grok 4 | Mistral Small 3.1 |
|---|---|---|
| LMArena Longer Query | 1409 | 1300 |
| Fiction.LiveBench | 94.4% | — |

## Writing & Preference

- Grok 4: 58.7 (#111)
- Mistral Small 3.1: 37.2 (#254)

| Benchmark | Grok 4 | Mistral Small 3.1 |
|---|---|---|
| LMArena Text | 1412 | 1278 |
| LMArena Creative Writing | 1397 | 1253 |
| WildBench | 79.7% | 78.8% |
| LMArena Multi-Turn | 1416 | 1270 |
| Short-Story Creative Writing | 76.9% | — |
| EQ-Bench Creative Writing | — | 761 |

## FAQ

### Is Grok 4 better than Mistral Small 3.1?

Grok 4 is the stronger model overall, scoring 47.8 to 31.4 on the Noometry Index.

### Is Grok 4 or Mistral Small 3.1 better for coding?

Grok 4 scores higher on coding benchmarks: 49.9 versus 37.7 in the Noometry coding category.

### How many benchmarks do Grok 4 and Mistral Small 3.1 share?

27 benchmarks have published results for both models. Grok 4 has 48 scored results on Noometry and Mistral Small 3.1 has 28.