Noometry

Model comparison

Gemini 2.5 Flash-Lite vs Mistral Small 3.1

Gemini 2.5 Flash-Lite is the stronger model overall, scoring 37.0 to 31.7 on the Noometry Index.

Last verified . 24 shared benchmarks.

Gemini 2.5 Flash-Lite Google

37.0

Rank #211 Confirmed

Mistral Small 3.1 Mistral AI

31.7

Rank #269 Confirmed

Summary

  • They share 24 benchmarks with published results for both. Gemini 2.5 Flash-Lite scores higher in 7 categories and Mistral Small 3.1 in 2 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in math, where Gemini 2.5 Flash-Lite leads 38.0 to 14.7.
  • The biggest single-benchmark swing is Omni-MATH: 48% for Gemini 2.5 Flash-Lite and 24.8% for Mistral Small 3.1.
  • Gemini 2.5 Flash-Lite is cheaper at $0.10 / $0.40 per million input/output tokens, against $0.35 / $0.56 for Mistral Small 3.1.
  • Gemini 2.5 Flash-Lite accepts more context: 1.05M tokens versus 128K.
  • Mistral Small 3.1 has downloadable open weights; the other is API-only.

Side by side

Gemini 2.5 Flash-LiteMistral Small 3.1
ProviderGoogleMistral AI
Noometry Index37.031.7
Released2025-06-172025-03-17
WeightsProprietaryOpen
Context window1.05M128K
Max output66K102K
Input $ / M tokens$0.10$0.35
Output $ / M tokens$0.40$0.56
Results tracked3328

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Category by category

Coding Too close to call

Gemini 2.5 Flash-Lite: 38.5 (#173), Mistral Small 3.1: 38.3 (#179)

BenchmarkGemini 2.5 Flash-LiteMistral Small 3.1
LMArena Coding13731309
WeirdML35.2%—
ALE-Bench325.9—

Agentic & Tool Use Not comparable

Gemini 2.5 Flash-Lite: 28.0 (#96), Mistral Small 3.1: —

BenchmarkGemini 2.5 Flash-LiteMistral Small 3.1
Berkeley Function Calling Leaderboard36.9%—

Reasoning Gemini 2.5 Flash-Lite leads

Gemini 2.5 Flash-Lite: 22.2 (#205), Mistral Small 3.1: 19.7 (#254)

BenchmarkGemini 2.5 Flash-LiteMistral Small 3.1
LMArena Hard Prompts13771278
Epoch Capabilities Index133.94127.48
Kagi LLM Benchmark40.5%—
Chess Puzzles—1%
DTBench62.8%—
LMCA18.1%—

Math Gemini 2.5 Flash-Lite leads

Gemini 2.5 Flash-Lite: 38.0 (#144), Mistral Small 3.1: 14.7 (#301)

BenchmarkGemini 2.5 Flash-LiteMistral Small 3.1
Omni-MATH48%24.8%
LMArena Math13731262
OTIS Mock AIME 2024-2025—3.9%

Knowledge Gemini 2.5 Flash-Lite leads

Gemini 2.5 Flash-Lite: 32.5 (#210), Mistral Small 3.1: 22.6 (#271)

BenchmarkGemini 2.5 Flash-LiteMistral Small 3.1
MMLU-Pro53.7%61%
GPQA (HELM)30.9%39.2%
LMArena Expert13731257
GPQA Diamond—41.9%
Vectara Hallucination Rate3.3%—

Multimodal Mistral Small 3.1 leads

Gemini 2.5 Flash-Lite: 29.1 (#114), Mistral Small 3.1: 33.2 (#99)

BenchmarkGemini 2.5 Flash-LiteMistral Small 3.1
LMArena Vision11981136
VPCT30%—

Multilingual Gemini 2.5 Flash-Lite leads

Gemini 2.5 Flash-Lite: 49.3 (#134), Mistral Small 3.1: 41.2 (#209)

BenchmarkGemini 2.5 Flash-LiteMistral Small 3.1
LMArena Non-English13691255
LMArena Chinese14041253
LMArena French13881273
LMArena German13891266
LMArena Japanese13591208
LMArena Korean13601206
LMArena Russian13731263
LMArena Spanish13961283

Instruction Following Gemini 2.5 Flash-Lite leads

Gemini 2.5 Flash-Lite: 70.0 (#168), Mistral Small 3.1: 63.6 (#230)

BenchmarkGemini 2.5 Flash-LiteMistral Small 3.1
IFEval81%75%
LMArena Instruction Following13671264

Long Context Mistral Small 3.1 leads

Gemini 2.5 Flash-Lite: 33.3 (#262), Mistral Small 3.1: 39.5 (#178)

BenchmarkGemini 2.5 Flash-LiteMistral Small 3.1
LMArena Longer Query13731299
Fiction.LiveBench47.2%—

Writing & Preference Gemini 2.5 Flash-Lite leads

Gemini 2.5 Flash-Lite: 56.8 (#135), Mistral Small 3.1: 37.0 (#259)

BenchmarkGemini 2.5 Flash-LiteMistral Small 3.1
LMArena Text13791277
LMArena Creative Writing13671253
WildBench81.8%78.8%
LMArena Multi-Turn13661270
EQ-Bench Creative Writing—761

Frequently asked questions

Is Gemini 2.5 Flash-Lite better than Mistral Small 3.1?

Gemini 2.5 Flash-Lite is the stronger model overall, scoring 37.0 to 31.7 on the Noometry Index.

Which is cheaper, Gemini 2.5 Flash-Lite or Mistral Small 3.1?

Gemini 2.5 Flash-Lite is cheaper. It lists at $0.10 per million input tokens and $0.40 per million output tokens; Mistral Small 3.1 lists at $0.35 and $0.56.

Is Gemini 2.5 Flash-Lite or Mistral Small 3.1 better for coding?

They score almost the same on coding (38.5 vs 38.3); test both on your own repository before choosing.

Which has the bigger context window?

Gemini 2.5 Flash-Lite does, with 1.05M tokens against 128K.

How many benchmarks do Gemini 2.5 Flash-Lite and Mistral Small 3.1 share?

24 benchmarks have published results for both models. Gemini 2.5 Flash-Lite has 33 scored results on Noometry and Mistral Small 3.1 has 28.

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