Noometry

Model comparison

Gemini 3.5 Flash vs Mistral Small

Gemini 3.5 Flash is the stronger model overall, scoring 54.2 to 33.4 on the Noometry Index. Mistral Small costs 13× less per token, which makes it the better buy when Gemini 3.5 Flash's lead doesn't matter for your workload.

Last verified . 25 shared benchmarks.

Gemini 3.5 Flash Google

54.2

Rank #32 Confirmed

Mistral Small Mistral AI

33.4

Rank #243 Confirmed

Summary

  • They share 25 benchmarks with published results for both. Gemini 3.5 Flash scores higher in 9 categories and Mistral Small in 1 category; 10 gaps are clear of the uncertainty.
  • The widest gap is in math, where Gemini 3.5 Flash leads 60.7 to 16.4.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 95.6% for Gemini 3.5 Flash and 5.8% for Mistral Small.
  • Mistral Small is cheaper at $0.15 / $0.60 per million input/output tokens, against $1.50 / $9 for Gemini 3.5 Flash.
  • Gemini 3.5 Flash accepts more context: 1.05M tokens versus 262K.
  • Mistral Small has downloadable open weights; the other is API-only.

Side by side

Gemini 3.5 FlashMistral Small
ProviderGoogleMistral AI
Noometry Index54.233.4
Released2026-05-192024-02-26
WeightsProprietaryOpen
Context window1.05M262K
Max output66K256K
Input $ / M tokens$1.50$0.15
Output $ / M tokens$9$0.60
Results tracked5439

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Category by category

Coding Gemini 3.5 Flash leads

Gemini 3.5 Flash: 49.4 (#49), Mistral Small: 34.0 (#247)

BenchmarkGemini 3.5 FlashMistral Small
SciCode53.1%26.5%
LMArena Coding14921362
ALE-Bench911.02497.62
SWE-bench Verified79.3%—
DeepSWE37.4%—
LMArena WebDev1499—
WeirdML62.6%—
BigCodeBench Instruct—36.1%
LiveBench Coding—36.2%
BigCodeBench Complete—46.6%

Agentic & Tool Use Mistral Small leads

Gemini 3.5 Flash: 24.7 (#114), Mistral Small: 28.1 (#93)

BenchmarkGemini 3.5 FlashMistral Small
APEX-Agents27.5%—
Berkeley Function Calling Leaderboard—37.1%
GBAEval6.7%—
GDP.pdf14%—
Vending-Bench 25,396—

Reasoning Gemini 3.5 Flash leads

Gemini 3.5 Flash: 62.8 (#18), Mistral Small: 19.8 (#250)

BenchmarkGemini 3.5 FlashMistral Small
CritPt13.1%0%
LMArena Hard Prompts14881335
DTBench94.7%70.9%
LMCA47.1%20.6%
ARC-AGI-272.1%—
SimpleBench76.7%—
Kagi LLM Benchmark—37.8%
NYT Connections (extended)92.6%—
ARC-AGI-192.5%—
Chess Puzzles50%—
EnigmaEval25.4%—
EBR-Bench4.8%—
LiveBench Reasoning—44.8%
Mystery Game Puzzles32%—
LiveBench Data Analysis—53.7%
Surface Evolver Bench58.1%—
Epoch Capabilities Index154.46—
ForecastBench59—
LiveBench—44%

Math Gemini 3.5 Flash leads

Gemini 3.5 Flash: 60.7 (#36), Mistral Small: 16.4 (#293)

BenchmarkGemini 3.5 FlashMistral Small
OTIS Mock AIME 2024-202595.6%5.8%
LMArena Math15041341
FrontierMath (Tiers 1-3)62.8%—
FrontierMath Tier 426.8%—
MathArena Final-Answer Competitions76.3%—
ProofBench31%—
LiveBench Math—39.9%
MATH Level 5—46.8%
FrontierMath (Feb 2025 set)39%—
FrontierMath Tier 4 (v1)14.6%—

Knowledge Gemini 3.5 Flash leads

Gemini 3.5 Flash: 66.3 (#11), Mistral Small: 31.0 (#222)

BenchmarkGemini 3.5 FlashMistral Small
GPQA Diamond92.8%47.5%
LMArena Expert14951291
SimpleQA Verified66.2%—
Vectara Hallucination Rate—5.1%
MMLU—68.7%

Multimodal Gemini 3.5 Flash leads

Gemini 3.5 Flash: 45.7 (#15), Mistral Small: 33.5 (#96)

BenchmarkGemini 3.5 FlashMistral Small
LMArena Vision13101142
Blueprint-Bench 233.6%—
LMArena Document1463—

Multilingual Gemini 3.5 Flash leads

Gemini 3.5 Flash: 57.0 (#13), Mistral Small: 45.5 (#169)

BenchmarkGemini 3.5 FlashMistral Small
LMArena Non-English14761315
LMArena Chinese15261340
LMArena French14901337
LMArena German14921340
LMArena Japanese14861275
LMArena Korean14511259
LMArena Russian14931324
LMArena Spanish14801346

Instruction Following Gemini 3.5 Flash leads

Gemini 3.5 Flash: 77.0 (#30), Mistral Small: 66.4 (#209)

BenchmarkGemini 3.5 FlashMistral Small
LMArena Instruction Following14671310
LiveBench Instruction Following—63.7%

Long Context Gemini 3.5 Flash leads

Gemini 3.5 Flash: 45.4 (#38), Mistral Small: 40.4 (#156)

BenchmarkGemini 3.5 FlashMistral Small
LMArena Longer Query14821327

Writing & Preference Gemini 3.5 Flash leads

Gemini 3.5 Flash: 65.5 (#47), Mistral Small: 52.5 (#171)

BenchmarkGemini 3.5 FlashMistral Small
LMArena Text14821338
LMArena Creative Writing14701305
LMArena Multi-Turn14811344
EQ-Bench 41087—
LiveBench Language—30.5%

Frequently asked questions

Is Gemini 3.5 Flash better than Mistral Small?

Gemini 3.5 Flash is the stronger model overall, scoring 54.2 to 33.4 on the Noometry Index. Mistral Small costs 13× less per token, which makes it the better buy when Gemini 3.5 Flash's lead doesn't matter for your workload.

Which is cheaper, Gemini 3.5 Flash or Mistral Small?

Mistral Small is cheaper. It lists at $0.15 per million input tokens and $0.60 per million output tokens; Gemini 3.5 Flash lists at $1.50 and $9.

Is Gemini 3.5 Flash or Mistral Small better for coding?

Gemini 3.5 Flash scores higher on coding benchmarks: 49.4 versus 34.0 in the Noometry coding category.

Which has the bigger context window?

Gemini 3.5 Flash does, with 1.05M tokens against 262K.

How many benchmarks do Gemini 3.5 Flash and Mistral Small share?

25 benchmarks have published results for both models. Gemini 3.5 Flash has 54 scored results on Noometry and Mistral Small has 39.

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