Noometry

Model comparison

Grok 3 vs Mistral Small 3.1

Grok 3 is the stronger model overall, scoring 39.9 to 31.7 on the Noometry Index.

Last verified . 26 shared benchmarks.

Grok 3 xAI

39.9

Rank #157 Confirmed

Mistral Small 3.1 Mistral AI

31.7

Rank #269 Confirmed

Summary

  • They share 26 benchmarks with published results for both. Grok 3 scores higher in 6 categories and Mistral Small 3.1 in 2 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in knowledge, where Grok 3 leads 46.2 to 22.6.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 55.6% for Grok 3 and 3.9% for Mistral Small 3.1.
  • Mistral Small 3.1 has downloadable open weights; the other is API-only.

Side by side

Grok 3Mistral Small 3.1
ProviderxAIMistral AI
Noometry Index39.931.7
Released2025-04-092025-03-17
WeightsProprietaryOpen
Context window—128K
Max output—102K
Input $ / M tokens—$0.35
Output $ / M tokens—$0.56
Results tracked4028

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Category by category

Coding Grok 3 leads

Grok 3: 41.9 (#115), Mistral Small 3.1: 38.3 (#179)

BenchmarkGrok 3Mistral Small 3.1
LMArena Coding14321309
Aider Polyglot53.3%—
WeirdML37.2%—

Agentic & Tool Use Not comparable

Grok 3: 30.5 (#76), Mistral Small 3.1: —

BenchmarkGrok 3Mistral Small 3.1
BALROG29.5%—

Reasoning Mistral Small 3.1 leads

Grok 3: 13.7 (#333), Mistral Small 3.1: 19.7 (#254)

BenchmarkGrok 3Mistral Small 3.1
LMArena Hard Prompts14341278
Epoch Capabilities Index138.33127.48
ARC-AGI-20%—
SimpleBench36.1%—
Kagi LLM Benchmark61.3%—
ARC-AGI-15.5%—
Chess Puzzles—1%

Math Grok 3 leads

Grok 3: 38.0 (#145), Mistral Small 3.1: 14.7 (#301)

BenchmarkGrok 3Mistral Small 3.1
OTIS Mock AIME 2024-202555.6%3.9%
Omni-MATH46.4%24.8%
LMArena Math13911262
MATH Level 588.7%—
FrontierMath (Feb 2025 set)3.8%—
FrontierMath Tier 4 (v1)0%—

Knowledge Grok 3 leads

Grok 3: 46.2 (#82), Mistral Small 3.1: 22.6 (#271)

BenchmarkGrok 3Mistral Small 3.1
GPQA Diamond75.8%41.9%
MMLU-Pro78.8%61%
GPQA (HELM)65%39.2%
LMArena Expert14211257
Confabulations14.2%—
Vectara Hallucination Rate5.8%—

Multimodal Not comparable

Grok 3: —, Mistral Small 3.1: 33.2 (#99)

BenchmarkGrok 3Mistral Small 3.1
LMArena Vision—1136

Multilingual Grok 3 leads

Grok 3: 52.3 (#87), Mistral Small 3.1: 41.2 (#209)

BenchmarkGrok 3Mistral Small 3.1
LMArena Non-English14101255
LMArena Chinese14481253
LMArena French14601273
LMArena German14311266
LMArena Japanese13871208
LMArena Korean13731206
LMArena Russian14161263
LMArena Spanish14171283

Instruction Following Grok 3 leads

Grok 3: 75.0 (#73), Mistral Small 3.1: 63.6 (#230)

BenchmarkGrok 3Mistral Small 3.1
IFEval88.4%75%
LMArena Instruction Following14091264

Long Context Too close to call

Grok 3: 38.7 (#192), Mistral Small 3.1: 39.5 (#178)

BenchmarkGrok 3Mistral Small 3.1
LMArena Longer Query14391299
Fiction.LiveBench58.3%—

Writing & Preference Grok 3 leads

Grok 3: 55.8 (#141), Mistral Small 3.1: 37.0 (#259)

BenchmarkGrok 3Mistral Small 3.1
LMArena Text14261277
LMArena Creative Writing14141253
EQ-Bench Creative Writing1186761
WildBench84.9%78.8%
LMArena Multi-Turn14251270
Short-Story Creative Writing76.4%—

Frequently asked questions

Is Grok 3 better than Mistral Small 3.1?

Grok 3 is the stronger model overall, scoring 39.9 to 31.7 on the Noometry Index.

Is Grok 3 or Mistral Small 3.1 better for coding?

Grok 3 scores higher on coding benchmarks: 41.9 versus 38.3 in the Noometry coding category.

How many benchmarks do Grok 3 and Mistral Small 3.1 share?

26 benchmarks have published results for both models. Grok 3 has 40 scored results on Noometry and Mistral Small 3.1 has 28.

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