Noometry

Model comparison

Grok 4 Fast vs Mistral 7B

Grok 4 Fast is the stronger model overall, scoring 39.4 to 23.0 on the Noometry Index.

Last verified . 18 shared benchmarks.

Grok 4 Fast xAI

39.4

Rank #167 Confirmed

Mistral 7B Mistral AI

23.0

Rank #351 Confirmed

Summary

  • They share 18 benchmarks with published results for both. Grok 4 Fast scores higher in 8 categories and Mistral 7B in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in long context, where Grok 4 Fast leads 63.2 to 32.2.
  • The biggest single-benchmark swing is DTBench: 82.7% for Grok 4 Fast and 42.5% for Mistral 7B.
  • Mistral 7B has downloadable open weights; the other is API-only.

Side by side

Grok 4 FastMistral 7B
ProviderxAIMistral AI
Noometry Index39.423.0
Released2025-09-192023-09-27
WeightsProprietaryOpen
Context window—8K
Max output—8K
Input $ / M tokens—$0.25
Output $ / M tokens—$0.25
Results tracked3037

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Category by category

Coding Grok 4 Fast leads

Grok 4 Fast: 32.5 (#271), Mistral 7B: 26.4 (#326)

BenchmarkGrok 4 FastMistral 7B
LMArena Coding14291082
LMArena WebDev1159—
WeirdML42.9%—
BigCodeBench Instruct—19.5%
BigCodeBench Complete—27.3%
HumanEval+—36%
MBPP+—42.1%

Agentic & Tool Use Not comparable

Grok 4 Fast: 29.5 (#86), Mistral 7B: —

BenchmarkGrok 4 FastMistral 7B
τ²-bench Banking15.7%—
Cybench30%—
LMArena Search1171—

Reasoning Grok 4 Fast leads

Grok 4 Fast: 22.2 (#201), Mistral 7B: 13.1 (#336)

BenchmarkGrok 4 FastMistral 7B
LMArena Hard Prompts14121067
DTBench82.7%42.5%
Epoch Capabilities Index144.2112.21
ARC-AGI-25.3%—
Kagi LLM Benchmark66.1%—
ARC-AGI-148.5%—
Chess Puzzles—0%
Adversarial NLI—47.1%
BIG-Bench Hard—56.1%
ForecastBench60.5—
HellaSwag—81%
PIQA—83%
WinoGrande—75.3%

Math Grok 4 Fast leads

Grok 4 Fast: 38.9 (#123), Mistral 7B: 8.1 (#325)

BenchmarkGrok 4 FastMistral 7B
LMArena Math14191085
OTIS Mock AIME 2024-2025—0.3%
MATH Level 5—3.7%
GSM8K—54.4%

Knowledge Grok 4 Fast leads

Grok 4 Fast: 32.0 (#214), Mistral 7B: 7.4 (#311)

BenchmarkGrok 4 FastMistral 7B
LMArena Expert14111036
GPQA Diamond—15.2%
Vectara Hallucination Rate19.7%—
ARC (AI2) Challenge—78.6%
BoolQ—87.4%
MMLU—62.5%
OpenBookQA—79.8%
TriviaQA—75.2%

Multilingual Grok 4 Fast leads

Grok 4 Fast: 51.3 (#111), Mistral 7B: 25.8 (#283)

BenchmarkGrok 4 FastMistral 7B
LMArena Non-English13961012
LMArena Chinese14571009
LMArena French14311037
LMArena German1383987
LMArena Japanese1352878
LMArena Russian13891018
LMArena Spanish14151026
LMArena Korean1357—

Instruction Following Grok 4 Fast leads

Grok 4 Fast: 73.2 (#121), Mistral 7B: 54.2 (#280)

BenchmarkGrok 4 FastMistral 7B
LMArena Instruction Following13871060

Long Context Grok 4 Fast leads

Grok 4 Fast: 63.2 (#3), Mistral 7B: 32.2 (#271)

BenchmarkGrok 4 FastMistral 7B
LMArena Longer Query14151060
Fiction.LiveBench94.4%—

Writing & Preference Grok 4 Fast leads

Grok 4 Fast: 60.0 (#102), Mistral 7B: 30.7 (#286)

BenchmarkGrok 4 FastMistral 7B
LMArena Text14071090
LMArena Creative Writing13871068
LMArena Multi-Turn14141062

Frequently asked questions

Is Grok 4 Fast better than Mistral 7B?

Grok 4 Fast is the stronger model overall, scoring 39.4 to 23.0 on the Noometry Index.

Is Grok 4 Fast or Mistral 7B better for coding?

Grok 4 Fast scores higher on coding benchmarks: 32.5 versus 26.4 in the Noometry coding category.

How many benchmarks do Grok 4 Fast and Mistral 7B share?

18 benchmarks have published results for both models. Grok 4 Fast has 30 scored results on Noometry and Mistral 7B has 37.

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