Noometry

Model comparison

Gemini 3.6 Flash vs GPT-5.5 Instant

Gemini 3.6 Flash is the stronger model overall, scoring 54.1 to 42.7 on the Noometry Index.

Last verified . 27 shared benchmarks.

Gemini 3.6 Flash Google

54.1

Rank #33 Confirmed

GPT-5.5 Instant OpenAI

42.7

Rank #110 Confirmed

Summary

  • They share 27 benchmarks with published results for both. Gemini 3.6 Flash scores higher in 8 categories and GPT-5.5 Instant in 1 category; 9 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Gemini 3.6 Flash leads 58.8 to 24.9.
  • The biggest single-benchmark swing is FrontierMath (Tiers 1-3): 58.9% for Gemini 3.6 Flash and 26.3% for GPT-5.5 Instant.

Side by side

Gemini 3.6 FlashGPT-5.5 Instant
ProviderGoogleOpenAI
Noometry Index54.142.7
Released2026-07-212026-05-05
WeightsProprietaryProprietary
Context window1.05M—
Max output66K—
Input $ / M tokens$0.75—
Output $ / M tokens$3.75—
Results tracked4627

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Category by category

Coding Gemini 3.6 Flash leads

Gemini 3.6 Flash: 50.0 (#48), GPT-5.5 Instant: 44.3 (#74)

BenchmarkGemini 3.6 FlashGPT-5.5 Instant
SciCode52.7%48.6%
LMArena Coding14911433
DeepSWE46.7%—
FrontierCode34.4%—
LMArena WebDev1538—
WeirdML56.1%—
ALE-Bench715.52—

Agentic & Tool Use Not comparable

Gemini 3.6 Flash: 32.3 (#65), GPT-5.5 Instant: —

BenchmarkGemini 3.6 FlashGPT-5.5 Instant
APEX-Agents46.9%—
GDP.pdf14%—

Reasoning Gemini 3.6 Flash leads

Gemini 3.6 Flash: 58.8 (#22), GPT-5.5 Instant: 24.9 (#155)

BenchmarkGemini 3.6 FlashGPT-5.5 Instant
CritPt10.6%0%
Chess Puzzles43%12%
LMArena Hard Prompts14851426
Epoch Capabilities Index154.25142.52
ARC-AGI-260.4%—
NYT Connections (extended)89%—
ARC-AGI-191.2%—
Mystery Game Puzzles30%—
DTBench95.5%—
LMCA44.9%—

Math Gemini 3.6 Flash leads

Gemini 3.6 Flash: 57.3 (#40), GPT-5.5 Instant: 26.5 (#259)

BenchmarkGemini 3.6 FlashGPT-5.5 Instant
FrontierMath (Tiers 1-3)58.9%26.3%
FrontierMath Tier 422%2.4%
OTIS Mock AIME 2024-202594.2%68.1%
LMArena Math15051420
MathArena Final-Answer Competitions70.8%—
ProofBench36%—

Knowledge Gemini 3.6 Flash leads

Gemini 3.6 Flash: 67.8 (#8), GPT-5.5 Instant: 48.9 (#74)

BenchmarkGemini 3.6 FlashGPT-5.5 Instant
GPQA Diamond94.1%82.5%
LMArena Expert14881409
SimpleQA Verified66.2%—

Multimodal GPT-5.5 Instant leads

Gemini 3.6 Flash: 38.5 (#64), GPT-5.5 Instant: 40.0 (#52)

BenchmarkGemini 3.6 FlashGPT-5.5 Instant
LMArena Vision12981250
LMArena Document14561403
Blueprint-Bench 231.2%—
Furniture Assembly23.3%—

Multilingual Gemini 3.6 Flash leads

Gemini 3.6 Flash: 56.5 (#19), GPT-5.5 Instant: 52.8 (#80)

BenchmarkGemini 3.6 FlashGPT-5.5 Instant
LMArena Non-English14691417
LMArena Chinese15311456
LMArena French15041428
LMArena German14781411
LMArena Japanese14761408
LMArena Korean14311392
LMArena Russian14871431
LMArena Spanish14751429

Instruction Following Gemini 3.6 Flash leads

Gemini 3.6 Flash: 77.0 (#33), GPT-5.5 Instant: 74.2 (#100)

BenchmarkGemini 3.6 FlashGPT-5.5 Instant
LMArena Instruction Following14661406

Long Context Gemini 3.6 Flash leads

Gemini 3.6 Flash: 45.1 (#50), GPT-5.5 Instant: 43.4 (#96)

BenchmarkGemini 3.6 FlashGPT-5.5 Instant
LMArena Longer Query14741422

Writing & Preference Gemini 3.6 Flash leads

Gemini 3.6 Flash: 68.2 (#27), GPT-5.5 Instant: 61.8 (#85)

BenchmarkGemini 3.6 FlashGPT-5.5 Instant
LMArena Text14791419
LMArena Creative Writing14651419
LMArena Multi-Turn14811433
EQ-Bench Creative Writing1604—

Frequently asked questions

Is Gemini 3.6 Flash better than GPT-5.5 Instant?

Gemini 3.6 Flash is the stronger model overall, scoring 54.1 to 42.7 on the Noometry Index.

Is Gemini 3.6 Flash or GPT-5.5 Instant better for coding?

Gemini 3.6 Flash scores higher on coding benchmarks: 50.0 versus 44.3 in the Noometry coding category.

How many benchmarks do Gemini 3.6 Flash and GPT-5.5 Instant share?

27 benchmarks have published results for both models. Gemini 3.6 Flash has 46 scored results on Noometry and GPT-5.5 Instant has 27.

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