Noometry

Model comparison

Grok-3 mini vs Mistral Medium 3.5

Grok-3 mini is the stronger model overall, scoring 41.2 to 40.2 on the Noometry Index.

Last verified . 18 shared benchmarks.

Grok-3 mini xAI

41.2

Rank #141 Confirmed

Mistral Medium 3.5 Mistral AI

40.2

Rank #152 Confirmed

Summary

  • They share 18 benchmarks with published results for both. Grok-3 mini scores higher in 4 categories and Mistral Medium 3.5 in 4 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in knowledge, where Grok-3 mini leads 46.4 to 40.0.
  • The biggest single-benchmark swing is Kagi LLM Benchmark: 61.3% for Grok-3 mini and 41.4% for Mistral Medium 3.5.
  • Mistral Medium 3.5 has downloadable open weights; the other is API-only.

Side by side

Grok-3 miniMistral Medium 3.5
ProviderxAIMistral AI
Noometry Index41.240.2
Released2025-04-09—
WeightsProprietaryOpen
Context window—262K
Max output—210K
Input $ / M tokens—$1.50
Output $ / M tokens—$7.50
Results tracked3522

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Category by category

Coding Grok-3 mini leads

Grok-3 mini: 40.8 (#131), Mistral Medium 3.5: 36.0 (#213)

BenchmarkGrok-3 miniMistral Medium 3.5
LMArena Coding13791461
Aider Polyglot49.3%—
LMArena WebDev—1264
WeirdML42.6%—

Reasoning Mistral Medium 3.5 leads

Grok-3 mini: 13.6 (#334), Mistral Medium 3.5: 17.3 (#295)

BenchmarkGrok-3 miniMistral Medium 3.5
Kagi LLM Benchmark61.3%41.4%
LMArena Hard Prompts13751436
Epoch Capabilities Index140.35141.35
ARC-AGI-20.4%—
NYT Connections (extended)—12.9%
ARC-AGI-116.5%—

Math Grok-3 mini leads

Grok-3 mini: 42.1 (#85), Mistral Medium 3.5: 39.1 (#113)

BenchmarkGrok-3 miniMistral Medium 3.5
LMArena Math13861431
OTIS Mock AIME 2024-202577.8%—
Omni-MATH31.8%—
MATH Level 590.9%—
FrontierMath (Feb 2025 set)5.9%—

Knowledge Grok-3 mini leads

Grok-3 mini: 46.4 (#81), Mistral Medium 3.5: 40.0 (#126)

BenchmarkGrok-3 miniMistral Medium 3.5
LMArena Expert13951432
GPQA Diamond76.3%—
MMLU-Pro79.9%—
Confabulations10.8%—
GPQA (HELM)67.5%—

Multimodal Not comparable

Grok-3 mini: —, Mistral Medium 3.5: 38.3 (#65)

BenchmarkGrok-3 miniMistral Medium 3.5
LMArena Vision—1223

Multilingual Mistral Medium 3.5 leads

Grok-3 mini: 48.1 (#145), Mistral Medium 3.5: 51.9 (#100)

BenchmarkGrok-3 miniMistral Medium 3.5
LMArena Non-English13521404
LMArena Chinese13871442
LMArena French13571448
LMArena German13491451
LMArena Korean13351385
LMArena Russian13531395
LMArena Spanish13811409
LMArena Japanese1342—

Instruction Following Grok-3 mini leads

Grok-3 mini: 78.5 (#9), Mistral Medium 3.5: 74.6 (#90)

BenchmarkGrok-3 miniMistral Medium 3.5
LMArena Instruction Following13571415
IFEval95.1%—

Long Context Mistral Medium 3.5 leads

Grok-3 mini: 41.0 (#147), Mistral Medium 3.5: 43.2 (#103)

BenchmarkGrok-3 miniMistral Medium 3.5
LMArena Longer Query13721415
Fiction.LiveBench66.7%—

Writing & Preference Mistral Medium 3.5 leads

Grok-3 mini: 52.5 (#169), Mistral Medium 3.5: 58.5 (#117)

BenchmarkGrok-3 miniMistral Medium 3.5
LMArena Text13701421
LMArena Creative Writing13421374
LMArena Multi-Turn13551423
Short-Story Creative Writing73.5%—
WildBench65.1%—
EQ-Bench 4—993

Frequently asked questions

Is Grok-3 mini better than Mistral Medium 3.5?

Grok-3 mini is the stronger model overall, scoring 41.2 to 40.2 on the Noometry Index.

Is Grok-3 mini or Mistral Medium 3.5 better for coding?

Grok-3 mini scores higher on coding benchmarks: 40.8 versus 36.0 in the Noometry coding category.

How many benchmarks do Grok-3 mini and Mistral Medium 3.5 share?

18 benchmarks have published results for both models. Grok-3 mini has 35 scored results on Noometry and Mistral Medium 3.5 has 22.

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