Noometry

Model comparison

Grok-3 mini vs Mistral Small 3.1

Grok-3 mini is the stronger model overall, scoring 41.2 to 31.7 on the Noometry Index.

Last verified . 25 shared benchmarks.

Grok-3 mini xAI

41.2

Rank #141 Confirmed

Mistral Small 3.1 Mistral AI

31.7

Rank #269 Confirmed

Summary

  • They share 25 benchmarks with published results for both. Grok-3 mini scores higher in 7 categories and Mistral Small 3.1 in 1 category; 8 gaps are clear of the uncertainty.
  • The widest gap is in math, where Grok-3 mini leads 42.1 to 14.7.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 77.8% for Grok-3 mini 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-3 miniMistral Small 3.1
ProviderxAIMistral AI
Noometry Index41.231.7
Released2025-04-092025-03-17
WeightsProprietaryOpen
Context window—128K
Max output—102K
Input $ / M tokens—$0.35
Output $ / M tokens—$0.56
Results tracked3528

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Category by category

Coding Grok-3 mini leads

Grok-3 mini: 40.8 (#131), Mistral Small 3.1: 38.3 (#179)

BenchmarkGrok-3 miniMistral Small 3.1
LMArena Coding13791309
Aider Polyglot49.3%—
WeirdML42.6%—

Reasoning Mistral Small 3.1 leads

Grok-3 mini: 13.6 (#334), Mistral Small 3.1: 19.7 (#254)

BenchmarkGrok-3 miniMistral Small 3.1
LMArena Hard Prompts13751278
Epoch Capabilities Index140.35127.48
ARC-AGI-20.4%—
Kagi LLM Benchmark61.3%—
ARC-AGI-116.5%—
Chess Puzzles—1%

Math Grok-3 mini leads

Grok-3 mini: 42.1 (#85), Mistral Small 3.1: 14.7 (#301)

BenchmarkGrok-3 miniMistral Small 3.1
OTIS Mock AIME 2024-202577.8%3.9%
Omni-MATH31.8%24.8%
LMArena Math13861262
MATH Level 590.9%—
FrontierMath (Feb 2025 set)5.9%—

Knowledge Grok-3 mini leads

Grok-3 mini: 46.4 (#81), Mistral Small 3.1: 22.6 (#271)

BenchmarkGrok-3 miniMistral Small 3.1
GPQA Diamond76.3%41.9%
MMLU-Pro79.9%61%
GPQA (HELM)67.5%39.2%
LMArena Expert13951257
Confabulations10.8%—

Multimodal Not comparable

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

BenchmarkGrok-3 miniMistral Small 3.1
LMArena Vision—1136

Multilingual Grok-3 mini leads

Grok-3 mini: 48.1 (#145), Mistral Small 3.1: 41.2 (#209)

BenchmarkGrok-3 miniMistral Small 3.1
LMArena Non-English13521255
LMArena Chinese13871253
LMArena French13571273
LMArena German13491266
LMArena Japanese13421208
LMArena Korean13351206
LMArena Russian13531263
LMArena Spanish13811283

Instruction Following Grok-3 mini leads

Grok-3 mini: 78.5 (#9), Mistral Small 3.1: 63.6 (#230)

BenchmarkGrok-3 miniMistral Small 3.1
IFEval95.1%75%
LMArena Instruction Following13571264

Long Context Grok-3 mini leads

Grok-3 mini: 41.0 (#147), Mistral Small 3.1: 39.5 (#178)

BenchmarkGrok-3 miniMistral Small 3.1
LMArena Longer Query13721299
Fiction.LiveBench66.7%—

Writing & Preference Grok-3 mini leads

Grok-3 mini: 52.5 (#169), Mistral Small 3.1: 37.0 (#259)

BenchmarkGrok-3 miniMistral Small 3.1
LMArena Text13701277
LMArena Creative Writing13421253
WildBench65.1%78.8%
LMArena Multi-Turn13551270
Short-Story Creative Writing73.5%—
EQ-Bench Creative Writing—761

Frequently asked questions

Is Grok-3 mini better than Mistral Small 3.1?

Grok-3 mini is the stronger model overall, scoring 41.2 to 31.7 on the Noometry Index.

Is Grok-3 mini or Mistral Small 3.1 better for coding?

Grok-3 mini scores higher on coding benchmarks: 40.8 versus 38.3 in the Noometry coding category.

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

25 benchmarks have published results for both models. Grok-3 mini has 35 scored results on Noometry and Mistral Small 3.1 has 28.

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