Noometry

Model comparison

Gemini 3.6 Flash vs Grok 4.3

Gemini 3.6 Flash is the stronger model overall, scoring 54.1 to 43.8 on the Noometry Index.

Last verified . 36 shared benchmarks.

Gemini 3.6 Flash Google

54.1

Rank #33 Confirmed

Grok 4.3 xAI

43.8

Rank #86 Confirmed

Summary

  • They share 36 benchmarks with published results for both. Gemini 3.6 Flash scores higher in 10 categories and Grok 4.3 in 0 categories; 10 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Gemini 3.6 Flash leads 58.8 to 35.9.
  • The biggest single-benchmark swing is NYT Connections (extended): 89% for Gemini 3.6 Flash and 55.2% for Grok 4.3.
  • Both cost about the same: $0.75 input and $3.75 output per million tokens.
  • Gemini 3.6 Flash accepts more context: 1.05M tokens versus 1M.

Side by side

Gemini 3.6 FlashGrok 4.3
ProviderGooglexAI
Noometry Index54.143.8
Released2026-07-212026-04-17
WeightsProprietaryProprietary
Context window1.05M1M
Max output66K30K
Input $ / M tokens$0.75$1.25
Output $ / M tokens$3.75$2.50
Results tracked4640

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Category by category

Coding Gemini 3.6 Flash leads

Gemini 3.6 Flash: 50.0 (#48), Grok 4.3: 41.6 (#121)

BenchmarkGemini 3.6 FlashGrok 4.3
LMArena WebDev15381357
SciCode52.7%47.3%
WeirdML56.1%49.9%
LMArena Coding14911415
ALE-Bench715.52944.17
DeepSWE46.7%—
FrontierCode34.4%—

Agentic & Tool Use Gemini 3.6 Flash leads

Gemini 3.6 Flash: 32.3 (#65), Grok 4.3: 27.7 (#99)

BenchmarkGemini 3.6 FlashGrok 4.3
GDP.pdf14%8%
APEX-Agents46.9%—
LMArena Search—1165
Vending-Bench 2—35.26

Reasoning Gemini 3.6 Flash leads

Gemini 3.6 Flash: 58.8 (#22), Grok 4.3: 35.9 (#68)

BenchmarkGemini 3.6 FlashGrok 4.3
NYT Connections (extended)89%55.2%
CritPt10.6%8%
Chess Puzzles43%25%
LMArena Hard Prompts14851396
DTBench95.5%90.7%
LMCA44.9%38.3%
Epoch Capabilities Index154.25149.16
ARC-AGI-260.4%—
ARC-AGI-191.2%—
Mystery Game Puzzles30%—
ForecastBench—60.3

Math Gemini 3.6 Flash leads

Gemini 3.6 Flash: 57.3 (#40), Grok 4.3: 46.0 (#74)

BenchmarkGemini 3.6 FlashGrok 4.3
FrontierMath (Tiers 1-3)58.9%42.8%
FrontierMath Tier 422%14.6%
OTIS Mock AIME 2024-202594.2%93.3%
ProofBench36%11%
LMArena Math15051388
MathArena Final-Answer Competitions70.8%—

Knowledge Gemini 3.6 Flash leads

Gemini 3.6 Flash: 67.8 (#8), Grok 4.3: 52.5 (#62)

BenchmarkGemini 3.6 FlashGrok 4.3
GPQA Diamond94.1%88.8%
SimpleQA Verified66.2%33.2%
LMArena Expert14881385

Multimodal Gemini 3.6 Flash leads

Gemini 3.6 Flash: 38.5 (#64), Grok 4.3: 31.6 (#104)

BenchmarkGemini 3.6 FlashGrok 4.3
LMArena Vision12981229
Blueprint-Bench 231.2%0%
Furniture Assembly23.3%—
LMArena Document1456—

Multilingual Gemini 3.6 Flash leads

Gemini 3.6 Flash: 56.5 (#19), Grok 4.3: 50.5 (#120)

BenchmarkGemini 3.6 FlashGrok 4.3
LMArena Non-English14691385
LMArena Chinese15311422
LMArena French15041412
LMArena German14781395
LMArena Japanese14761379
LMArena Korean14311356
LMArena Russian14871399
LMArena Spanish14751398

Instruction Following Gemini 3.6 Flash leads

Gemini 3.6 Flash: 77.0 (#33), Grok 4.3: 72.1 (#140)

BenchmarkGemini 3.6 FlashGrok 4.3
LMArena Instruction Following14661366

Long Context Gemini 3.6 Flash leads

Gemini 3.6 Flash: 45.1 (#50), Grok 4.3: 42.5 (#123)

BenchmarkGemini 3.6 FlashGrok 4.3
LMArena Longer Query14741393

Writing & Preference Gemini 3.6 Flash leads

Gemini 3.6 Flash: 68.2 (#27), Grok 4.3: 58.5 (#118)

BenchmarkGemini 3.6 FlashGrok 4.3
LMArena Text14791397
LMArena Creative Writing14651380
LMArena Multi-Turn14811406
EQ-Bench Creative Writing1604—
EQ-Bench 4—1075

Frequently asked questions

Is Gemini 3.6 Flash better than Grok 4.3?

Gemini 3.6 Flash is the stronger model overall, scoring 54.1 to 43.8 on the Noometry Index.

Which is cheaper, Gemini 3.6 Flash or Grok 4.3?

Gemini 3.6 Flash is cheaper. It lists at $0.75 per million input tokens and $3.75 per million output tokens; Grok 4.3 lists at $1.25 and $2.50.

Is Gemini 3.6 Flash or Grok 4.3 better for coding?

Gemini 3.6 Flash scores higher on coding benchmarks: 50.0 versus 41.6 in the Noometry coding category.

Which has the bigger context window?

Gemini 3.6 Flash does, with 1.05M tokens against 1M.

How many benchmarks do Gemini 3.6 Flash and Grok 4.3 share?

36 benchmarks have published results for both models. Gemini 3.6 Flash has 46 scored results on Noometry and Grok 4.3 has 40.

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