Model comparison

Grok 4.20 Multi-Agent vs Mixtral 8x7B

Grok 4.20 Multi-Agent is the stronger model overall, scoring 45.5 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 Multi-Agent's lead doesn't matter for your workload.

Last verified October 10, 2026. 17 shared benchmarks.

Grok 4.20 Multi-Agent xAI

45.5

Rank #62 Confirmed

Mixtral 8x7B

Mistral AI

26.8

Rank #328 Confirmed

Summary

They share 17 benchmarks with published results for both. Grok 4.20 Multi-Agent scores higher in 8 categories and Mixtral 8x7B in 0 categories; 8 gaps are clear of the uncertainty.
The widest gap is in writing & preference, where Grok 4.20 Multi-Agent leads 64.1 to 34.4.
Mixtral 8x7B is cheaper at $0.70 / $0.70 per million input/output tokens, against $1.25 / $2.50 for Grok 4.20 Multi-Agent.
Grok 4.20 Multi-Agent accepts more context: 1M tokens versus 32K.
Mixtral 8x7B has downloadable open weights; the other is API-only.

Side by side

Grok 4.20 Multi-Agent and Mixtral 8x7B specifications
	Grok 4.20 Multi-Agent	Mixtral 8x7B
Provider	xAI	Mistral AI
Noometry Index	45.5	26.8
Released	2026-03-09	2023-12-11
Weights	Proprietary	Open
Context window	1M	32K
Max output	30K	32K
Input $ / M tokens	$1.25	$0.70
Output $ / M tokens	$2.50	$0.70
Results tracked	20	38

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Category by category

Coding Grok 4.20 Multi-Agent leads

Grok 4.20 Multi-Agent: 42.4 (#91), Mixtral 8x7B: 32.2 (#265)

Coding benchmarks
Benchmark	Grok 4.20 Multi-Agent	Mixtral 8x7B
LMArena Coding	1458	1127
HumanEval+	—	39.6%
MBPP+	—	49.7%

Agentic & Tool Use Not comparable

Grok 4.20 Multi-Agent: —, Mixtral 8x7B: —

Agentic & Tool Use benchmarks
Benchmark	Grok 4.20 Multi-Agent	Mixtral 8x7B
LMArena Search	1204	—

Reasoning Grok 4.20 Multi-Agent leads

Grok 4.20 Multi-Agent: 42.4 (#44), Mixtral 8x7B: 17.4 (#283)

Reasoning benchmarks
Benchmark	Grok 4.20 Multi-Agent	Mixtral 8x7B
LMArena Hard Prompts	1448	1115
NYT Connections (extended)	89.6%	—
DTBench	—	49.6%
Adversarial NLI	—	55.2%
Epoch Capabilities Index	—	118.38
ForecastBench	—	56.3
HellaSwag	—	86.7%
PIQA	—	83.6%
WinoGrande	—	77.2%

Math Grok 4.20 Multi-Agent leads

Grok 4.20 Multi-Agent: 36.6 (#106), Mixtral 8x7B: 17.2 (#284)

Math benchmarks
Benchmark	Grok 4.20 Multi-Agent	Mixtral 8x7B
LMArena Math	1441	1147
Omni-MATH	—	10.5%
MATH Level 5	—	10%
GSM8K	—	74.4%

Knowledge Grok 4.20 Multi-Agent leads

Grok 4.20 Multi-Agent: 39.7 (#116), Mixtral 8x7B: 11.0 (#296)

Knowledge benchmarks
Benchmark	Grok 4.20 Multi-Agent	Mixtral 8x7B
LMArena Expert	1445	1088
GPQA Diamond	—	30.6%
MMLU-Pro	—	33.5%
GPQA (HELM)	—	29.6%
ARC (AI2) Challenge	—	87.3%
MMLU	—	70.6%
OpenBookQA	—	85.8%
TriviaQA	—	82.2%

Multimodal Not comparable

Grok 4.20 Multi-Agent: 39.8 (#44), Mixtral 8x7B: —

Multimodal benchmarks
Benchmark	Grok 4.20 Multi-Agent	Mixtral 8x7B
LMArena Vision	1259	—

Multilingual Grok 4.20 Multi-Agent leads

Grok 4.20 Multi-Agent: 54.6 (#40), Mixtral 8x7B: 29.8 (#261)

Multilingual benchmarks
Benchmark	Grok 4.20 Multi-Agent	Mixtral 8x7B
LMArena Non-English	1440	1077
LMArena Chinese	1475	1055
LMArena French	1467	1165
LMArena German	1456	1114
LMArena Japanese	1405	931
LMArena Korean	1416	968
LMArena Russian	1457	1090
LMArena Spanish	1447	1110

Instruction Following Grok 4.20 Multi-Agent leads

Grok 4.20 Multi-Agent: 75.0 (#80), Mixtral 8x7B: 51.2 (#292)

Instruction Following benchmarks
Benchmark	Grok 4.20 Multi-Agent	Mixtral 8x7B
LMArena Instruction Following	1420	1110
IFEval	—	57.5%

Long Context Grok 4.20 Multi-Agent leads

Grok 4.20 Multi-Agent: 43.7 (#84), Mixtral 8x7B: 33.4 (#255)

Long Context benchmarks
Benchmark	Grok 4.20 Multi-Agent	Mixtral 8x7B
LMArena Longer Query	1430	1103

Writing & Preference Grok 4.20 Multi-Agent leads

Grok 4.20 Multi-Agent: 64.1 (#57), Mixtral 8x7B: 34.4 (#265)

Writing & Preference benchmarks
Benchmark	Grok 4.20 Multi-Agent	Mixtral 8x7B
LMArena Text	1450	1132
LMArena Creative Writing	1435	1109
LMArena Multi-Turn	1451	1115
WildBench	—	67.3%

Frequently asked questions

Is Grok 4.20 Multi-Agent better than Mixtral 8x7B?

Which is cheaper, Grok 4.20 Multi-Agent 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 Multi-Agent lists at $1.25 and $2.50.

Is Grok 4.20 Multi-Agent or Mixtral 8x7B better for coding?

Grok 4.20 Multi-Agent scores higher on coding benchmarks: 42.4 versus 32.2 in the Noometry coding category.

Which has the bigger context window?

Grok 4.20 Multi-Agent does, with 1M tokens against 32K.

How many benchmarks do Grok 4.20 Multi-Agent and Mixtral 8x7B share?

17 benchmarks have published results for both models. Grok 4.20 Multi-Agent has 20 scored results on Noometry and Mixtral 8x7B has 38.