Noometry

Model comparison

Grok 3 vs Mistral Medium 3.5

Grok 3 and Mistral Medium 3.5 score almost the same on the Noometry Index (39.9 vs 40.2), so choose on price, context window or the category you care about most.

Last verified . 18 shared benchmarks.

Grok 3 xAI

39.9

Rank #157 Confirmed

Mistral Medium 3.5 Mistral AI

40.2

Rank #152 Confirmed

Summary

  • They share 18 benchmarks with published results for both. Grok 3 scores higher in 4 categories and Mistral Medium 3.5 in 4 categories; 6 gaps are clear of the uncertainty.
  • The widest gap is in knowledge, where Grok 3 leads 46.2 to 40.0.
  • The biggest single-benchmark swing is Kagi LLM Benchmark: 61.3% for Grok 3 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 3Mistral Medium 3.5
ProviderxAIMistral AI
Noometry Index39.940.2
Released2025-04-09—
WeightsProprietaryOpen
Context window—262K
Max output—210K
Input $ / M tokens—$1.50
Output $ / M tokens—$7.50
Results tracked4022

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Category by category

Coding Grok 3 leads

Grok 3: 41.9 (#115), Mistral Medium 3.5: 36.0 (#213)

BenchmarkGrok 3Mistral Medium 3.5
LMArena Coding14321461
Aider Polyglot53.3%—
LMArena WebDev—1264
WeirdML37.2%—

Agentic & Tool Use Not comparable

Grok 3: 30.5 (#76), Mistral Medium 3.5: —

BenchmarkGrok 3Mistral Medium 3.5
BALROG29.5%—

Reasoning Mistral Medium 3.5 leads

Grok 3: 13.7 (#333), Mistral Medium 3.5: 17.3 (#295)

BenchmarkGrok 3Mistral Medium 3.5
Kagi LLM Benchmark61.3%41.4%
LMArena Hard Prompts14341436
Epoch Capabilities Index138.33141.35
ARC-AGI-20%—
SimpleBench36.1%—
NYT Connections (extended)—12.9%
ARC-AGI-15.5%—

Math Mistral Medium 3.5 leads

Grok 3: 38.0 (#145), Mistral Medium 3.5: 39.1 (#113)

BenchmarkGrok 3Mistral Medium 3.5
LMArena Math13911431
OTIS Mock AIME 2024-202555.6%—
Omni-MATH46.4%—
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 Medium 3.5: 40.0 (#126)

BenchmarkGrok 3Mistral Medium 3.5
LMArena Expert14211432
GPQA Diamond75.8%—
MMLU-Pro78.8%—
Confabulations14.2%—
Vectara Hallucination Rate5.8%—
GPQA (HELM)65%—

Multimodal Not comparable

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

BenchmarkGrok 3Mistral Medium 3.5
LMArena Vision—1223

Multilingual Too close to call

Grok 3: 52.3 (#87), Mistral Medium 3.5: 51.9 (#100)

BenchmarkGrok 3Mistral Medium 3.5
LMArena Non-English14101404
LMArena Chinese14481442
LMArena French14601448
LMArena German14311451
LMArena Korean13731385
LMArena Russian14161395
LMArena Spanish14171409
LMArena Japanese1387—

Instruction Following Too close to call

Grok 3: 75.0 (#73), Mistral Medium 3.5: 74.6 (#90)

BenchmarkGrok 3Mistral Medium 3.5
LMArena Instruction Following14091415
IFEval88.4%—

Long Context Mistral Medium 3.5 leads

Grok 3: 38.7 (#192), Mistral Medium 3.5: 43.2 (#103)

BenchmarkGrok 3Mistral Medium 3.5
LMArena Longer Query14391415
Fiction.LiveBench58.3%—

Writing & Preference Mistral Medium 3.5 leads

Grok 3: 55.8 (#141), Mistral Medium 3.5: 58.5 (#117)

BenchmarkGrok 3Mistral Medium 3.5
LMArena Text14261421
LMArena Creative Writing14141374
LMArena Multi-Turn14251423
Short-Story Creative Writing76.4%—
EQ-Bench Creative Writing1186—
WildBench84.9%—
EQ-Bench 4—993

Frequently asked questions

Is Grok 3 better than Mistral Medium 3.5?

Grok 3 and Mistral Medium 3.5 score almost the same on the Noometry Index (39.9 vs 40.2), so choose on price, context window or the category you care about most.

Is Grok 3 or Mistral Medium 3.5 better for coding?

Grok 3 scores higher on coding benchmarks: 41.9 versus 36.0 in the Noometry coding category.

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

18 benchmarks have published results for both models. Grok 3 has 40 scored results on Noometry and Mistral Medium 3.5 has 22.

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