# Grok 4.1 Fast vs Mistral Large 3

> Grok 4.1 Fast is the stronger model overall, scoring 40.9 to 38.6 on the Noometry Index.

- Canonical page: https://noometry.com/compare/grok-4-1-fast-vs-mistral-large-3
- Last updated: 2026-10-10
- Shared benchmarks: 22

## Summary

- They share 22 benchmarks with published results for both. Grok 4.1 Fast scores higher in 1 category and Mistral Large 3 in 8 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.1 Fast leads 42.3 to 14.6.
- The biggest single-benchmark swing is NYT Connections (extended): 87.4% for Grok 4.1 Fast and 7.5% for Mistral Large 3.
- Grok 4.1 Fast is cheaper at $0.20 / $0.50 per million input/output tokens, against $0.25 / $0.75 for Mistral Large 3.
- Mistral Large 3 accepts more context: 262K tokens versus 128K.
- Mistral Large 3 has downloadable open weights; the other is API-only.

## Snapshot

| | Grok 4.1 Fast | Mistral Large 3 |
|---|---|---|
| Provider | xAI | Mistral AI |
| Noometry Index | 40.9 | 38.6 |
| Rank | 131 | 172 |
| Context | 128K | 262K |
| Input $/M | $0.20 | $0.25 |
| Output $/M | $0.50 | $0.75 |
| Weights | Proprietary | Open |

## Coding

- Grok 4.1 Fast: 33.8 (#236)
- Mistral Large 3: 34.1 (#230)

| Benchmark | Grok 4.1 Fast | Mistral Large 3 |
|---|---|---|
| LMArena WebDev | 1241 | 1230 |
| LMArena Coding | 1411 | 1447 |
| ALE-Bench | 394.93 | — |

## Agentic & Tool Use

- Grok 4.1 Fast: 36.1 (#35)
- Mistral Large 3: —

| Benchmark | Grok 4.1 Fast | Mistral Large 3 |
|---|---|---|
| Berkeley Function Calling Leaderboard | 69.6% | — |
| τ²-bench Banking | 13.1% | — |
| LMArena Search | 1171 | — |
| Vending-Bench 2 | 1,107 | — |

## Reasoning

- Grok 4.1 Fast: 42.3 (#45)
- Mistral Large 3: 14.6 (#314)

| Benchmark | Grok 4.1 Fast | Mistral Large 3 |
|---|---|---|
| NYT Connections (extended) | 87.4% | 7.5% |
| LMArena Hard Prompts | 1407 | 1429 |
| SimpleBench | 56% | — |
| Kagi LLM Benchmark | — | 50.9% |
| Thematic Generalization | — | 23% |
| DTBench | 87.7% | — |
| ForecastBench | 61 | — |

## Math

- Grok 4.1 Fast: 30.9 (#201)
- Mistral Large 3: 36.0 (#131)

| Benchmark | Grok 4.1 Fast | Mistral Large 3 |
|---|---|---|
| LMArena Math | 1408 | 1415 |
| MathArena Final-Answer Competitions | 60.9% | — |
| ProofBench | 4% | — |

## Knowledge

- Grok 4.1 Fast: 32.6 (#203)
- Mistral Large 3: 35.5 (#173)

| Benchmark | Grok 4.1 Fast | Mistral Large 3 |
|---|---|---|
| Vectara Hallucination Rate | 17.8% | 14.5% |
| LMArena Expert | 1398 | 1421 |

## Multimodal

- Grok 4.1 Fast: 36.3 (#71)
- Mistral Large 3: 37.6 (#65)

| Benchmark | Grok 4.1 Fast | Mistral Large 3 |
|---|---|---|
| LMArena Vision | 1201 | 1222 |

## Multilingual

- Grok 4.1 Fast: 51.1 (#110)
- Mistral Large 3: 52.6 (#79)

| Benchmark | Grok 4.1 Fast | Mistral Large 3 |
|---|---|---|
| LMArena Non-English | 1391 | 1412 |
| LMArena Chinese | 1441 | 1448 |
| LMArena French | 1416 | 1456 |
| LMArena German | 1404 | 1438 |
| LMArena Japanese | 1347 | 1399 |
| LMArena Korean | 1361 | 1384 |
| LMArena Russian | 1387 | 1412 |
| LMArena Spanish | 1411 | 1437 |

## Instruction Following

- Grok 4.1 Fast: 72.8 (#127)
- Mistral Large 3: 74.1 (#104)

| Benchmark | Grok 4.1 Fast | Mistral Large 3 |
|---|---|---|
| LMArena Instruction Following | 1376 | 1402 |

## Long Context

- Grok 4.1 Fast: 42.4 (#121)
- Mistral Large 3: 43.1 (#102)

| Benchmark | Grok 4.1 Fast | Mistral Large 3 |
|---|---|---|
| LMArena Longer Query | 1390 | 1413 |

## Writing & Preference

- Grok 4.1 Fast: 57.4 (#126)
- Mistral Large 3: 60.2 (#100)

| Benchmark | Grok 4.1 Fast | Mistral Large 3 |
|---|---|---|
| LMArena Text | 1408 | 1427 |
| LMArena Creative Writing | 1394 | 1385 |
| EQ-Bench Creative Writing | 1327 | 1412 |
| LMArena Multi-Turn | 1389 | 1429 |

## FAQ

### Is Grok 4.1 Fast better than Mistral Large 3?

Grok 4.1 Fast is the stronger model overall, scoring 40.9 to 38.6 on the Noometry Index.

### Which is cheaper, Grok 4.1 Fast or Mistral Large 3?

Grok 4.1 Fast is cheaper. It lists at $0.20 per million input tokens and $0.50 per million output tokens; Mistral Large 3 lists at $0.25 and $0.75.

### Is Grok 4.1 Fast or Mistral Large 3 better for coding?

They score almost the same on coding (33.8 vs 34.1); test both on your own repository before choosing.

### Which has the bigger context window?

Mistral Large 3 does, with 262K tokens against 128K.

### How many benchmarks do Grok 4.1 Fast and Mistral Large 3 share?

22 benchmarks have published results for both models. Grok 4.1 Fast has 32 scored results on Noometry and Mistral Large 3 has 24.