# Grok 4.3 vs Mistral Medium

> Grok 4.3 is the stronger model overall, scoring 43.8 to 36.3 on the Noometry Index.

- Canonical page: https://noometry.com/compare/grok-4-3-vs-mistral-medium
- Last updated: 2026-10-12
- Shared benchmarks: 27

## Summary

- They share 27 benchmarks with published results for both. Grok 4.3 scores higher in 4 categories and Mistral Medium in 6 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Grok 4.3 leads 52.5 to 25.0.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 93.3% for Grok 4.3 and 32.2% for Mistral Medium.
- Grok 4.3 is cheaper at $1.25 / $2.50 per million input/output tokens, against $1.50 / $7.50 for Mistral Medium.
- Grok 4.3 accepts more context: 1M tokens versus 262K.
- Mistral Medium has downloadable open weights; the other is API-only.

## Snapshot

| | Grok 4.3 | Mistral Medium |
|---|---|---|
| Provider | xAI | Mistral AI |
| Noometry Index | 43.8 | 36.3 |
| Rank | 86 | 218 |
| Context | 1M | 262K |
| Input $/M | $1.25 | $1.50 |
| Output $/M | $2.50 | $7.50 |
| Weights | Proprietary | Open |

## Coding

- Grok 4.3: 41.6 (#121)
- Mistral Medium: 34.2 (#243)

| Benchmark | Grok 4.3 | Mistral Medium |
|---|---|---|
| SciCode | 47.3% | 40.2% |
| WeirdML | 49.9% | 43.7% |
| LMArena Coding | 1415 | 1434 |
| ALE-Bench | 944.17 | 763.98 |
| FrontierCode | — | 8% |
| LMArena WebDev | 1357 | — |

## Agentic & Tool Use

- Grok 4.3: 27.7 (#99)
- Mistral Medium: 28.3 (#90)

| Benchmark | Grok 4.3 | Mistral Medium |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 37.7% |
| GDP.pdf | 8% | — |
| LMArena Search | 1165 | — |
| Vending-Bench 2 | 35.26 | — |

## Reasoning

- Grok 4.3: 35.9 (#68)
- Mistral Medium: 24.0 (#167)

| Benchmark | Grok 4.3 | Mistral Medium |
|---|---|---|
| CritPt | 8% | 0% |
| LMArena Hard Prompts | 1396 | 1426 |
| DTBench | 90.7% | 75.5% |
| LMCA | 38.3% | 26.1% |
| Kagi LLM Benchmark | — | 50% |
| NYT Connections (extended) | 55.2% | — |
| Chess Puzzles | 25% | — |
| Surface Evolver Bench | — | 26.9% |
| Epoch Capabilities Index | 149.16 | — |
| ForecastBench | 60.3 | — |

## Math

- Grok 4.3: 46.0 (#74)
- Mistral Medium: 28.1 (#245)

| Benchmark | Grok 4.3 | Mistral Medium |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 93.3% | 32.2% |
| ProofBench | 11% | 9% |
| LMArena Math | 1388 | 1408 |
| FrontierMath (Tiers 1-3) | 42.8% | — |
| FrontierMath Tier 4 | 14.6% | — |
| MATH Level 5 | — | 81.6% |
| FrontierMath (Feb 2025 set) | — | 0.3% |

## Knowledge

- Grok 4.3: 52.5 (#62)
- Mistral Medium: 25.0 (#265)

| Benchmark | Grok 4.3 | Mistral Medium |
|---|---|---|
| GPQA Diamond | 88.8% | 59.5% |
| LMArena Expert | 1385 | 1408 |
| Humanity's Last Exam | — | 4.5% |
| SimpleQA Verified | 33.2% | — |
| Vectara Hallucination Rate | — | 22.7% |

## Multimodal

- Grok 4.3: 31.6 (#104)
- Mistral Medium: 35.3 (#88)

| Benchmark | Grok 4.3 | Mistral Medium |
|---|---|---|
| LMArena Vision | 1229 | 1172 |
| Blueprint-Bench 2 | 0% | — |

## Multilingual

- Grok 4.3: 50.5 (#120)
- Mistral Medium: 52.1 (#91)

| Benchmark | Grok 4.3 | Mistral Medium |
|---|---|---|
| LMArena Non-English | 1385 | 1408 |
| LMArena Chinese | 1422 | 1447 |
| LMArena French | 1412 | 1459 |
| LMArena German | 1395 | 1432 |
| LMArena Japanese | 1379 | 1378 |
| LMArena Korean | 1356 | 1380 |
| LMArena Russian | 1399 | 1411 |
| LMArena Spanish | 1398 | 1433 |

## Instruction Following

- Grok 4.3: 72.1 (#140)
- Mistral Medium: 73.7 (#116)

| Benchmark | Grok 4.3 | Mistral Medium |
|---|---|---|
| LMArena Instruction Following | 1366 | 1398 |

## Long Context

- Grok 4.3: 42.5 (#123)
- Mistral Medium: 42.9 (#114)

| Benchmark | Grok 4.3 | Mistral Medium |
|---|---|---|
| LMArena Longer Query | 1393 | 1406 |

## Writing & Preference

- Grok 4.3: 58.5 (#118)
- Mistral Medium: 60.0 (#103)

| Benchmark | Grok 4.3 | Mistral Medium |
|---|---|---|
| LMArena Text | 1397 | 1424 |
| LMArena Creative Writing | 1380 | 1391 |
| LMArena Multi-Turn | 1406 | 1418 |
| Short-Story Creative Writing | — | 77.3% |
| EQ-Bench 4 | 1075 | — |

## FAQ

### Is Grok 4.3 better than Mistral Medium?

Grok 4.3 is the stronger model overall, scoring 43.8 to 36.3 on the Noometry Index.

### Which is cheaper, Grok 4.3 or Mistral Medium?

Grok 4.3 is cheaper. It lists at $1.25 per million input tokens and $2.50 per million output tokens; Mistral Medium lists at $1.50 and $7.50.

### Is Grok 4.3 or Mistral Medium better for coding?

Grok 4.3 scores higher on coding benchmarks: 41.6 versus 34.2 in the Noometry coding category.

### Which has the bigger context window?

Grok 4.3 does, with 1M tokens against 262K.

### How many benchmarks do Grok 4.3 and Mistral Medium share?

27 benchmarks have published results for both models. Grok 4.3 has 40 scored results on Noometry and Mistral Medium has 36.