Noometry

Model comparison

Gemini 3.5 Flash vs Kimi K2 Thinking Turbo

Gemini 3.5 Flash is the stronger model overall, scoring 54.2 to 45.8 on the Noometry Index.

Last verified . 21 shared benchmarks.

Gemini 3.5 Flash Google

54.2

Rank #32 Confirmed

Kimi K2 Thinking Turbo Moonshot AI

45.8

Rank #70 Confirmed

Summary

  • They share 21 benchmarks with published results for both. Gemini 3.5 Flash scores higher in 8 categories and Kimi K2 Thinking Turbo in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Gemini 3.5 Flash leads 62.8 to 32.5.
  • The biggest single-benchmark swing is Chess Puzzles: 50% for Gemini 3.5 Flash and 20% for Kimi K2 Thinking Turbo.
  • Kimi K2 Thinking Turbo has downloadable open weights; the other is API-only.

Side by side

Gemini 3.5 FlashKimi K2 Thinking Turbo
ProviderGoogleMoonshot AI
Noometry Index54.245.8
Released2026-05-192025-11-06
WeightsProprietaryOpen
Context window1.05M—
Max output66K—
Input $ / M tokens$1.50—
Output $ / M tokens$9—
Results tracked5421

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Category by category

Coding Gemini 3.5 Flash leads

Gemini 3.5 Flash: 49.4 (#49), Kimi K2 Thinking Turbo: 38.4 (#178)

BenchmarkGemini 3.5 FlashKimi K2 Thinking Turbo
LMArena WebDev14991322
LMArena Coding14921454
SWE-bench Verified79.3%—
DeepSWE37.4%—
SciCode53.1%—
WeirdML62.6%—
ALE-Bench911.02—

Agentic & Tool Use Not comparable

Gemini 3.5 Flash: 24.7 (#114), Kimi K2 Thinking Turbo: —

BenchmarkGemini 3.5 FlashKimi K2 Thinking Turbo
APEX-Agents27.5%—
GBAEval6.7%—
GDP.pdf14%—
Vending-Bench 25,396—

Reasoning Gemini 3.5 Flash leads

Gemini 3.5 Flash: 62.8 (#18), Kimi K2 Thinking Turbo: 32.5 (#75)

BenchmarkGemini 3.5 FlashKimi K2 Thinking Turbo
Chess Puzzles50%20%
LMArena Hard Prompts14881428
ARC-AGI-272.1%—
SimpleBench76.7%—
NYT Connections (extended)92.6%—
ARC-AGI-192.5%—
CritPt13.1%—
EnigmaEval25.4%—
EBR-Bench4.8%—
Mystery Game Puzzles32%—
DTBench94.7%—
LMCA47.1%—
Surface Evolver Bench58.1%—
Epoch Capabilities Index154.46—
ForecastBench59—

Math Gemini 3.5 Flash leads

Gemini 3.5 Flash: 60.7 (#36), Kimi K2 Thinking Turbo: 47.4 (#68)

BenchmarkGemini 3.5 FlashKimi K2 Thinking Turbo
OTIS Mock AIME 2024-202595.6%83.1%
LMArena Math15041429
FrontierMath (Tiers 1-3)62.8%—
FrontierMath Tier 426.8%—
MathArena Final-Answer Competitions76.3%—
ProofBench31%—
FrontierMath (Feb 2025 set)39%—
FrontierMath Tier 4 (v1)14.6%—

Knowledge Gemini 3.5 Flash leads

Gemini 3.5 Flash: 66.3 (#11), Kimi K2 Thinking Turbo: 50.9 (#69)

BenchmarkGemini 3.5 FlashKimi K2 Thinking Turbo
GPQA Diamond92.8%84.2%
LMArena Expert14951439
SimpleQA Verified66.2%—

Multimodal Not comparable

Gemini 3.5 Flash: 45.7 (#15), Kimi K2 Thinking Turbo: —

BenchmarkGemini 3.5 FlashKimi K2 Thinking Turbo
LMArena Vision1310—
Blueprint-Bench 233.6%—
LMArena Document1463—

Multilingual Gemini 3.5 Flash leads

Gemini 3.5 Flash: 57.0 (#13), Kimi K2 Thinking Turbo: 51.4 (#109)

BenchmarkGemini 3.5 FlashKimi K2 Thinking Turbo
LMArena Non-English14761398
LMArena Chinese15261456
LMArena French14901425
LMArena German14921390
LMArena Japanese14861357
LMArena Korean14511330
LMArena Russian14931391
LMArena Spanish14801406

Instruction Following Gemini 3.5 Flash leads

Gemini 3.5 Flash: 77.0 (#30), Kimi K2 Thinking Turbo: 74.0 (#109)

BenchmarkGemini 3.5 FlashKimi K2 Thinking Turbo
LMArena Instruction Following14671403

Long Context Gemini 3.5 Flash leads

Gemini 3.5 Flash: 45.4 (#38), Kimi K2 Thinking Turbo: 43.2 (#102)

BenchmarkGemini 3.5 FlashKimi K2 Thinking Turbo
LMArena Longer Query14821415

Writing & Preference Gemini 3.5 Flash leads

Gemini 3.5 Flash: 65.5 (#47), Kimi K2 Thinking Turbo: 60.0 (#104)

BenchmarkGemini 3.5 FlashKimi K2 Thinking Turbo
LMArena Text14821415
LMArena Creative Writing14701374
LMArena Multi-Turn14811414
EQ-Bench 41087—

Frequently asked questions

Is Gemini 3.5 Flash better than Kimi K2 Thinking Turbo?

Gemini 3.5 Flash is the stronger model overall, scoring 54.2 to 45.8 on the Noometry Index.

Is Gemini 3.5 Flash or Kimi K2 Thinking Turbo better for coding?

Gemini 3.5 Flash scores higher on coding benchmarks: 49.4 versus 38.4 in the Noometry coding category.

How many benchmarks do Gemini 3.5 Flash and Kimi K2 Thinking Turbo share?

21 benchmarks have published results for both models. Gemini 3.5 Flash has 54 scored results on Noometry and Kimi K2 Thinking Turbo has 21.

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