Noometry

Model comparison

Grok 4.1 Fast vs Mistral Large 3

Grok 4.1 Fast is the stronger model overall, scoring 41.4 to 39.1 on the Noometry Index.

Last verified . 22 shared benchmarks.

Grok 4.1 Fast xAI

41.4

Rank #136 Confirmed

Mistral Large 3 Mistral AI

39.1

Rank #176 Confirmed

Summary

  • They share 22 benchmarks with published results for both. Grok 4.1 Fast scores higher in 1 category and Mistral Large 3 in 8 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Grok 4.1 Fast leads 43.4 to 15.2.
  • The biggest single-benchmark swing is NYT Connections (extended): 87.4% for Grok 4.1 Fast and 7.5% for Mistral Large 3.
  • Grok 4.1 Fast is cheaper at $0.20 / $0.50 per million input/output tokens, against $0.25 / $0.75 for Mistral Large 3.
  • Mistral Large 3 accepts more context: 262K tokens versus 128K.
  • Mistral Large 3 has downloadable open weights; the other is API-only.

Side by side

Grok 4.1 FastMistral Large 3
ProviderxAIMistral AI
Noometry Index41.439.1
Released2025-06-272025-12-02
WeightsProprietaryOpen
Context window128K262K
Max output30K8K
Input $ / M tokens$0.20$0.25
Output $ / M tokens$0.50$0.75
Results tracked3224

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Category by category

Coding Too close to call

Grok 4.1 Fast: 34.1 (#245), Mistral Large 3: 34.4 (#237)

BenchmarkGrok 4.1 FastMistral Large 3
LMArena WebDev12421230
LMArena Coding14111448
ALE-Bench394.93—

Agentic & Tool Use Not comparable

Grok 4.1 Fast: 36.3 (#39), Mistral Large 3: —

BenchmarkGrok 4.1 FastMistral Large 3
Berkeley Function Calling Leaderboard69.6%—
τ²-bench Banking13.1%—
LMArena Search1171—
Vending-Bench 21,107—

Reasoning Grok 4.1 Fast leads

Grok 4.1 Fast: 43.4 (#49), Mistral Large 3: 15.2 (#319)

BenchmarkGrok 4.1 FastMistral Large 3
NYT Connections (extended)87.4%7.5%
LMArena Hard Prompts14071429
SimpleBench56%—
Kagi LLM Benchmark—50.9%
Thematic Generalization—23%
DTBench87.7%—
ForecastBench61—

Math Mistral Large 3 leads

Grok 4.1 Fast: 31.9 (#221), Mistral Large 3: 38.7 (#129)

BenchmarkGrok 4.1 FastMistral Large 3
LMArena Math14081414
MathArena Final-Answer Competitions60.9%—
ProofBench4%—

Knowledge Mistral Large 3 leads

Grok 4.1 Fast: 33.1 (#207), Mistral Large 3: 36.0 (#177)

BenchmarkGrok 4.1 FastMistral Large 3
Vectara Hallucination Rate17.8%14.5%
LMArena Expert13991421

Multimodal Mistral Large 3 leads

Grok 4.1 Fast: 37.0 (#76), Mistral Large 3: 38.2 (#66)

BenchmarkGrok 4.1 FastMistral Large 3
LMArena Vision12011221

Multilingual Mistral Large 3 leads

Grok 4.1 Fast: 51.0 (#114), Mistral Large 3: 52.5 (#84)

BenchmarkGrok 4.1 FastMistral Large 3
LMArena Non-English13911413
LMArena Chinese14411447
LMArena French14151455
LMArena German14041437
LMArena Japanese13491394
LMArena Korean13611384
LMArena Russian13871411
LMArena Spanish14131440

Instruction Following Mistral Large 3 leads

Grok 4.1 Fast: 72.7 (#133), Mistral Large 3: 74.0 (#108)

BenchmarkGrok 4.1 FastMistral Large 3
LMArena Instruction Following13761403

Long Context Too close to call

Grok 4.1 Fast: 42.4 (#126), Mistral Large 3: 43.1 (#105)

BenchmarkGrok 4.1 FastMistral Large 3
LMArena Longer Query13901413

Writing & Preference Mistral Large 3 leads

Grok 4.1 Fast: 57.2 (#131), Mistral Large 3: 60.0 (#101)

BenchmarkGrok 4.1 FastMistral Large 3
LMArena Text14081428
LMArena Creative Writing13941386
EQ-Bench Creative Writing13271412
LMArena Multi-Turn13891429

Frequently asked questions

Is Grok 4.1 Fast better than Mistral Large 3?

Grok 4.1 Fast is the stronger model overall, scoring 41.4 to 39.1 on the Noometry Index.

Which is cheaper, Grok 4.1 Fast or Mistral Large 3?

Grok 4.1 Fast is cheaper. It lists at $0.20 per million input tokens and $0.50 per million output tokens; Mistral Large 3 lists at $0.25 and $0.75.

Is Grok 4.1 Fast or Mistral Large 3 better for coding?

They score almost the same on coding (34.1 vs 34.4); test both on your own repository before choosing.

Which has the bigger context window?

Mistral Large 3 does, with 262K tokens against 128K.

How many benchmarks do Grok 4.1 Fast and Mistral Large 3 share?

22 benchmarks have published results for both models. Grok 4.1 Fast has 32 scored results on Noometry and Mistral Large 3 has 24.

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