Noometry

Model comparison

Grok-3 mini vs Mistral Medium 3.5

Grok-3 mini is the stronger model overall, scoring 41.0 to 39.6 on the Noometry Index.

Last verified . 18 shared benchmarks.

Grok-3 mini xAI

41.0

Rank #130 Confirmed

Mistral Medium 3.5 Mistral AI

39.6

Rank #151 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 46.3 to 39.3.
  • 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 Index41.039.6
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: 40.4 (#126), Mistral Medium 3.5: 35.7 (#208)

BenchmarkGrok-3 miniMistral Medium 3.5
LMArena Coding13801461
Aider Polyglot49.3%—
LMArena WebDev—1263
WeirdML42.6%—

Reasoning Mistral Medium 3.5 leads

Grok-3 mini: 13.8 (#323), Mistral Medium 3.5: 16.6 (#290)

BenchmarkGrok-3 miniMistral Medium 3.5
Kagi LLM Benchmark61.3%41.4%
LMArena Hard Prompts13741436
Epoch Capabilities Index140.35141.42
ARC-AGI-20.4%—
NYT Connections (extended)—12.9%
ARC-AGI-116.5%—

Math Grok-3 mini leads

Grok-3 mini: 40.3 (#78), Mistral Medium 3.5: 36.4 (#113)

BenchmarkGrok-3 miniMistral Medium 3.5
LMArena Math13861432
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: 46.3 (#75), Mistral Medium 3.5: 39.3 (#123)

BenchmarkGrok-3 miniMistral Medium 3.5
LMArena Expert13951431
GPQA Diamond76.3%—
MMLU-Pro79.9%—
Confabulations10.8%—
GPQA (HELM)67.5%—

Multimodal Not comparable

Grok-3 mini: —, Mistral Medium 3.5: 37.6 (#64)

BenchmarkGrok-3 miniMistral Medium 3.5
LMArena Vision—1222

Multilingual Mistral Medium 3.5 leads

Grok-3 mini: 48.3 (#141), Mistral Medium 3.5: 52.1 (#93)

BenchmarkGrok-3 miniMistral Medium 3.5
LMArena Non-English13521405
LMArena Chinese13871443
LMArena French13571448
LMArena German13501453
LMArena Korean13361387
LMArena Russian13521396
LMArena Spanish13791406
LMArena Japanese1343—

Instruction Following Grok-3 mini leads

Grok-3 mini: 78.7 (#8), Mistral Medium 3.5: 74.7 (#87)

BenchmarkGrok-3 miniMistral Medium 3.5
LMArena Instruction Following13561414
IFEval95.1%—

Long Context Mistral Medium 3.5 leads

Grok-3 mini: 41.0 (#142), Mistral Medium 3.5: 43.2 (#101)

BenchmarkGrok-3 miniMistral Medium 3.5
LMArena Longer Query13721414
Fiction.LiveBench66.7%—

Writing & Preference Mistral Medium 3.5 leads

Grok-3 mini: 52.7 (#163), Mistral Medium 3.5: 58.6 (#113)

BenchmarkGrok-3 miniMistral Medium 3.5
LMArena Text13701421
LMArena Creative Writing13421372
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 41.0 to 39.6 on the Noometry Index.

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

Grok-3 mini scores higher on coding benchmarks: 40.4 versus 35.7 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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