# Grok 4.20 (Non-Reasoning) vs Mixtral 8x7B

> Grok 4.20 (Non-Reasoning) is the stronger model overall, scoring 48.5 to 26.8 on the Noometry Index. Mixtral 8x7B costs 2.2× less per token, which makes it the better buy when Grok 4.20 (Non-Reasoning)'s lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/grok-4-20-vs-mixtral-8x7b
- Last updated: 2026-10-10
- Shared benchmarks: 21

## Summary

- They share 21 benchmarks with published results for both. Grok 4.20 (Non-Reasoning) scores higher in 8 categories and Mixtral 8x7B in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Grok 4.20 (Non-Reasoning) leads 52.8 to 11.0.
- The biggest single-benchmark swing is GPQA Diamond: 89.3% for Grok 4.20 (Non-Reasoning) and 30.6% for Mixtral 8x7B.
- Mixtral 8x7B is cheaper at $0.70 / $0.70 per million input/output tokens, against $1.25 / $2.50 for Grok 4.20 (Non-Reasoning).
- Grok 4.20 (Non-Reasoning) accepts more context: 1M tokens versus 32K.
- Mixtral 8x7B has downloadable open weights; the other is API-only.

## Snapshot

| | Grok 4.20 (Non-Reasoning) | Mixtral 8x7B |
|---|---|---|
| Provider | xAI | Mistral AI |
| Noometry Index | 48.5 | 26.8 |
| Rank | 48 | 328 |
| Context | 1M | 32K |
| Input $/M | $1.25 | $0.70 |
| Output $/M | $2.50 | $0.70 |
| Weights | Proprietary | Open |

## Coding

- Grok 4.20 (Non-Reasoning): 41.8 (#104)
- Mixtral 8x7B: 32.2 (#265)

| Benchmark | Grok 4.20 (Non-Reasoning) | Mixtral 8x7B |
|---|---|---|
| LMArena Coding | 1458 | 1127 |
| LMArena WebDev | 1374 | — |
| WeirdML | 52.3% | — |
| ALE-Bench | 1,150 | — |
| HumanEval+ | — | 39.6% |
| MBPP+ | — | 49.7% |

## Agentic & Tool Use

- Grok 4.20 (Non-Reasoning): 34.3 (#43)
- Mixtral 8x7B: —

| Benchmark | Grok 4.20 (Non-Reasoning) | Mixtral 8x7B |
|---|---|---|
| Terminal-Bench | 57.3% | — |
| τ²-bench Banking | 18% | — |
| LMArena Search | 1189 | — |
| Vending-Bench 2 | 4,663 | — |

## Reasoning

- Grok 4.20 (Non-Reasoning): 52.2 (#30)
- Mixtral 8x7B: 17.4 (#283)

| Benchmark | Grok 4.20 (Non-Reasoning) | Mixtral 8x7B |
|---|---|---|
| LMArena Hard Prompts | 1451 | 1115 |
| DTBench | 90.1% | 49.6% |
| Epoch Capabilities Index | 152.01 | 118.38 |
| ForecastBench | 61.4 | 56.3 |
| ARC-AGI-2 | 65.1% | — |
| Kagi LLM Benchmark | 75% | — |
| NYT Connections (extended) | 85.4% | — |
| ARC-AGI-1 | 89.5% | — |
| Chess Puzzles | 24% | — |
| Thematic Generalization | 63.8% | — |
| LMCA | 38.7% | — |
| Adversarial NLI | — | 55.2% |
| HellaSwag | — | 86.7% |
| PIQA | — | 83.6% |
| WinoGrande | — | 77.2% |

## Math

- Grok 4.20 (Non-Reasoning): 48.0 (#54)
- Mixtral 8x7B: 17.2 (#284)

| Benchmark | Grok 4.20 (Non-Reasoning) | Mixtral 8x7B |
|---|---|---|
| LMArena Math | 1455 | 1147 |
| FrontierMath (Tiers 1-3) | 44.9% | — |
| FrontierMath Tier 4 | 17.1% | — |
| OTIS Mock AIME 2024-2025 | 92.2% | — |
| ProofBench | 14% | — |
| Omni-MATH | — | 10.5% |
| MATH Level 5 | — | 10% |
| GSM8K | — | 74.4% |

## Knowledge

- Grok 4.20 (Non-Reasoning): 52.8 (#54)
- Mixtral 8x7B: 11.0 (#296)

| Benchmark | Grok 4.20 (Non-Reasoning) | Mixtral 8x7B |
|---|---|---|
| GPQA Diamond | 89.3% | 30.6% |
| LMArena Expert | 1440 | 1088 |
| SimpleQA Verified | 30.2% | — |
| MMLU-Pro | — | 33.5% |
| GPQA (HELM) | — | 29.6% |
| ARC (AI2) Challenge | — | 87.3% |
| MMLU | — | 70.6% |
| OpenBookQA | — | 85.8% |
| TriviaQA | — | 82.2% |

## Multimodal

- Grok 4.20 (Non-Reasoning): 33.2 (#88)
- Mixtral 8x7B: —

| Benchmark | Grok 4.20 (Non-Reasoning) | Mixtral 8x7B |
|---|---|---|
| LMArena Vision | 1263 | — |
| Blueprint-Bench 2 | 0% | — |
| LMArena Document | 1416 | — |

## Multilingual

- Grok 4.20 (Non-Reasoning): 54.7 (#38)
- Mixtral 8x7B: 29.8 (#261)

| Benchmark | Grok 4.20 (Non-Reasoning) | Mixtral 8x7B |
|---|---|---|
| LMArena Non-English | 1440 | 1077 |
| LMArena Chinese | 1481 | 1055 |
| LMArena French | 1477 | 1165 |
| LMArena German | 1463 | 1114 |
| LMArena Japanese | 1450 | 931 |
| LMArena Korean | 1417 | 968 |
| LMArena Russian | 1457 | 1090 |
| LMArena Spanish | 1442 | 1110 |

## Instruction Following

- Grok 4.20 (Non-Reasoning): 75.0 (#79)
- Mixtral 8x7B: 51.2 (#292)

| Benchmark | Grok 4.20 (Non-Reasoning) | Mixtral 8x7B |
|---|---|---|
| LMArena Instruction Following | 1420 | 1110 |
| IFEval | — | 57.5% |

## Long Context

- Grok 4.20 (Non-Reasoning): 45.4 (#33)
- Mixtral 8x7B: 33.4 (#255)

| Benchmark | Grok 4.20 (Non-Reasoning) | Mixtral 8x7B |
|---|---|---|
| LMArena Longer Query | 1436 | 1103 |
| CL-bench | 22.2% | — |
| CL-bench Life | 11.9% | — |

## Writing & Preference

- Grok 4.20 (Non-Reasoning): 65.9 (#42)
- Mixtral 8x7B: 34.4 (#265)

| Benchmark | Grok 4.20 (Non-Reasoning) | Mixtral 8x7B |
|---|---|---|
| LMArena Text | 1451 | 1132 |
| LMArena Creative Writing | 1439 | 1109 |
| LMArena Multi-Turn | 1456 | 1115 |
| EQ-Bench Creative Writing | 1574 | — |
| WildBench | — | 67.3% |

## FAQ

### Is Grok 4.20 (Non-Reasoning) better than Mixtral 8x7B?

Grok 4.20 (Non-Reasoning) is the stronger model overall, scoring 48.5 to 26.8 on the Noometry Index. Mixtral 8x7B costs 2.2× less per token, which makes it the better buy when Grok 4.20 (Non-Reasoning)'s lead doesn't matter for your workload.

### Which is cheaper, Grok 4.20 (Non-Reasoning) or Mixtral 8x7B?

Mixtral 8x7B is cheaper. It lists at $0.70 per million input tokens and $0.70 per million output tokens; Grok 4.20 (Non-Reasoning) lists at $1.25 and $2.50.

### Is Grok 4.20 (Non-Reasoning) or Mixtral 8x7B better for coding?

Grok 4.20 (Non-Reasoning) scores higher on coding benchmarks: 41.8 versus 32.2 in the Noometry coding category.

### Which has the bigger context window?

Grok 4.20 (Non-Reasoning) does, with 1M tokens against 32K.

### How many benchmarks do Grok 4.20 (Non-Reasoning) and Mixtral 8x7B share?

21 benchmarks have published results for both models. Grok 4.20 (Non-Reasoning) has 46 scored results on Noometry and Mixtral 8x7B has 38.