Noometry

Model comparison

Grok 4.3 vs Mixtral 8x7B

Grok 4.3 is the stronger model overall, scoring 43.8 to 27.1 on the Noometry Index. Mixtral 8x7B costs 2.2× less per token, which makes it the better buy when Grok 4.3's lead doesn't matter for your workload.

Last verified . 21 shared benchmarks.

Grok 4.3 xAI

43.8

Rank #86 Confirmed

Mixtral 8x7B Mistral AI

27.1

Rank #334 Confirmed

Summary

  • They share 21 benchmarks with published results for both. Grok 4.3 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 4.3 leads 52.5 to 11.0.
  • The biggest single-benchmark swing is GPQA Diamond: 88.8% for Grok 4.3 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 4.3.
  • Grok 4.3 accepts more context: 1M tokens versus 32K.
  • Mixtral 8x7B has downloadable open weights; the other is API-only.

Side by side

Grok 4.3Mixtral 8x7B
ProviderxAIMistral AI
Noometry Index43.827.1
Released2026-04-172023-12-11
WeightsProprietaryOpen
Context window1M32K
Max output30K32K
Input $ / M tokens$1.25$0.70
Output $ / M tokens$2.50$0.70
Results tracked4038

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Category by category

Coding Grok 4.3 leads

Grok 4.3: 41.6 (#121), Mixtral 8x7B: 32.8 (#269)

BenchmarkGrok 4.3Mixtral 8x7B
LMArena Coding14151126
LMArena WebDev1357—
SciCode47.3%—
WeirdML49.9%—
ALE-Bench944.17—
HumanEval+—39.6%
MBPP+—49.7%

Agentic & Tool Use Not comparable

Grok 4.3: 27.7 (#99), Mixtral 8x7B: —

BenchmarkGrok 4.3Mixtral 8x7B
GDP.pdf8%—
LMArena Search1165—
Vending-Bench 235.26—

Reasoning Grok 4.3 leads

Grok 4.3: 35.9 (#68), Mixtral 8x7B: 18.2 (#285)

BenchmarkGrok 4.3Mixtral 8x7B
LMArena Hard Prompts13961115
DTBench90.7%49.6%
Epoch Capabilities Index149.16118.47
ForecastBench60.356.3
NYT Connections (extended)55.2%—
CritPt8%—
Chess Puzzles25%—
LMCA38.3%—
Adversarial NLI—55.2%
HellaSwag—86.7%
PIQA—83.6%
WinoGrande—77.2%

Math Grok 4.3 leads

Grok 4.3: 46.0 (#74), Mixtral 8x7B: 18.8 (#289)

BenchmarkGrok 4.3Mixtral 8x7B
LMArena Math13881147
FrontierMath (Tiers 1-3)42.8%—
FrontierMath Tier 414.6%—
OTIS Mock AIME 2024-202593.3%—
ProofBench11%—
Omni-MATH—10.5%
MATH Level 5—10%
GSM8K—74.4%

Knowledge Grok 4.3 leads

Grok 4.3: 52.5 (#62), Mixtral 8x7B: 11.0 (#301)

BenchmarkGrok 4.3Mixtral 8x7B
GPQA Diamond88.8%30.6%
LMArena Expert13851088
SimpleQA Verified33.2%—
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 4.3: 31.6 (#104), Mixtral 8x7B: —

BenchmarkGrok 4.3Mixtral 8x7B
LMArena Vision1229—
Blueprint-Bench 20%—

Multilingual Grok 4.3 leads

Grok 4.3: 50.5 (#120), Mixtral 8x7B: 29.6 (#266)

BenchmarkGrok 4.3Mixtral 8x7B
LMArena Non-English13851077
LMArena Chinese14221055
LMArena French14121166
LMArena German13951114
LMArena Japanese1379931
LMArena Korean1356968
LMArena Russian13991090
LMArena Spanish13981111

Instruction Following Grok 4.3 leads

Grok 4.3: 72.1 (#140), Mixtral 8x7B: 51.0 (#297)

BenchmarkGrok 4.3Mixtral 8x7B
LMArena Instruction Following13661109
IFEval—57.5%

Long Context Grok 4.3 leads

Grok 4.3: 42.5 (#123), Mixtral 8x7B: 33.4 (#260)

BenchmarkGrok 4.3Mixtral 8x7B
LMArena Longer Query13931103

Writing & Preference Grok 4.3 leads

Grok 4.3: 58.5 (#118), Mixtral 8x7B: 34.2 (#270)

BenchmarkGrok 4.3Mixtral 8x7B
LMArena Text13971132
LMArena Creative Writing13801109
LMArena Multi-Turn14061115
WildBench—67.3%
EQ-Bench 41075—

Frequently asked questions

Is Grok 4.3 better than Mixtral 8x7B?

Grok 4.3 is the stronger model overall, scoring 43.8 to 27.1 on the Noometry Index. Mixtral 8x7B costs 2.2× less per token, which makes it the better buy when Grok 4.3's lead doesn't matter for your workload.

Which is cheaper, Grok 4.3 or Mixtral 8x7B?

Mixtral 8x7B is cheaper. It lists at $0.70 per million input tokens and $0.70 per million output tokens; Grok 4.3 lists at $1.25 and $2.50.

Is Grok 4.3 or Mixtral 8x7B better for coding?

Grok 4.3 scores higher on coding benchmarks: 41.6 versus 32.8 in the Noometry coding category.

Which has the bigger context window?

Grok 4.3 does, with 1M tokens against 32K.

How many benchmarks do Grok 4.3 and Mixtral 8x7B share?

21 benchmarks have published results for both models. Grok 4.3 has 40 scored results on Noometry and Mixtral 8x7B has 38.

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