Noometry

Model comparison

Kimi K2 Thinking Turbo vs Mistral Small 3.1

Kimi K2 Thinking Turbo is the stronger model overall, scoring 45.8 to 31.7 on the Noometry Index.

Last verified . 20 shared benchmarks.

Kimi K2 Thinking Turbo Moonshot AI

45.8

Rank #70 Confirmed

Mistral Small 3.1 Mistral AI

31.7

Rank #269 Confirmed

Summary

  • They share 20 benchmarks with published results for both. Kimi K2 Thinking Turbo scores higher in 8 categories and Mistral Small 3.1 in 0 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in math, where Kimi K2 Thinking Turbo leads 47.4 to 14.7.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 83.1% for Kimi K2 Thinking Turbo and 3.9% for Mistral Small 3.1.

Side by side

Kimi K2 Thinking TurboMistral Small 3.1
ProviderMoonshot AIMistral AI
Noometry Index45.831.7
Released2025-11-062025-03-17
WeightsOpenOpen
Context window—128K
Max output—102K
Input $ / M tokens—$0.35
Output $ / M tokens—$0.56
Results tracked2128

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Category by category

Coding Too close to call

Kimi K2 Thinking Turbo: 38.4 (#178), Mistral Small 3.1: 38.3 (#179)

BenchmarkKimi K2 Thinking TurboMistral Small 3.1
LMArena Coding14541309
LMArena WebDev1322—

Reasoning Kimi K2 Thinking Turbo leads

Kimi K2 Thinking Turbo: 32.5 (#75), Mistral Small 3.1: 19.7 (#254)

BenchmarkKimi K2 Thinking TurboMistral Small 3.1
Chess Puzzles20%1%
LMArena Hard Prompts14281278
Epoch Capabilities Index—127.48

Math Kimi K2 Thinking Turbo leads

Kimi K2 Thinking Turbo: 47.4 (#68), Mistral Small 3.1: 14.7 (#301)

BenchmarkKimi K2 Thinking TurboMistral Small 3.1
OTIS Mock AIME 2024-202583.1%3.9%
LMArena Math14291262
Omni-MATH—24.8%

Knowledge Kimi K2 Thinking Turbo leads

Kimi K2 Thinking Turbo: 50.9 (#69), Mistral Small 3.1: 22.6 (#271)

BenchmarkKimi K2 Thinking TurboMistral Small 3.1
GPQA Diamond84.2%41.9%
LMArena Expert14391257
MMLU-Pro—61%
GPQA (HELM)—39.2%

Multimodal Not comparable

Kimi K2 Thinking Turbo: —, Mistral Small 3.1: 33.2 (#99)

BenchmarkKimi K2 Thinking TurboMistral Small 3.1
LMArena Vision—1136

Multilingual Kimi K2 Thinking Turbo leads

Kimi K2 Thinking Turbo: 51.4 (#109), Mistral Small 3.1: 41.2 (#209)

BenchmarkKimi K2 Thinking TurboMistral Small 3.1
LMArena Non-English13981255
LMArena Chinese14561253
LMArena French14251273
LMArena German13901266
LMArena Japanese13571208
LMArena Korean13301206
LMArena Russian13911263
LMArena Spanish14061283

Instruction Following Kimi K2 Thinking Turbo leads

Kimi K2 Thinking Turbo: 74.0 (#109), Mistral Small 3.1: 63.6 (#230)

BenchmarkKimi K2 Thinking TurboMistral Small 3.1
LMArena Instruction Following14031264
IFEval—75%

Long Context Kimi K2 Thinking Turbo leads

Kimi K2 Thinking Turbo: 43.2 (#102), Mistral Small 3.1: 39.5 (#178)

BenchmarkKimi K2 Thinking TurboMistral Small 3.1
LMArena Longer Query14151299

Writing & Preference Kimi K2 Thinking Turbo leads

Kimi K2 Thinking Turbo: 60.0 (#104), Mistral Small 3.1: 37.0 (#259)

BenchmarkKimi K2 Thinking TurboMistral Small 3.1
LMArena Text14151277
LMArena Creative Writing13741253
LMArena Multi-Turn14141270
EQ-Bench Creative Writing—761
WildBench—78.8%

Frequently asked questions

Is Kimi K2 Thinking Turbo better than Mistral Small 3.1?

Kimi K2 Thinking Turbo is the stronger model overall, scoring 45.8 to 31.7 on the Noometry Index.

Is Kimi K2 Thinking Turbo or Mistral Small 3.1 better for coding?

They score almost the same on coding (38.4 vs 38.3); test both on your own repository before choosing.

How many benchmarks do Kimi K2 Thinking Turbo and Mistral Small 3.1 share?

20 benchmarks have published results for both models. Kimi K2 Thinking Turbo has 21 scored results on Noometry and Mistral Small 3.1 has 28.

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