Noometry

Model comparison

Gemini 3.5 Flash Lite vs GPT-5.5 Instant

GPT-5.5 Instant is the stronger model overall, scoring 42.7 to 41.5 on the Noometry Index.

Last verified . 26 shared benchmarks.

Gemini 3.5 Flash Lite Google

41.5

Rank #133 Confirmed

GPT-5.5 Instant OpenAI

42.7

Rank #110 Confirmed

Summary

  • They share 26 benchmarks with published results for both. Gemini 3.5 Flash Lite scores higher in 7 categories and GPT-5.5 Instant in 2 categories; 5 gaps are clear of the uncertainty.
  • The biggest single-benchmark swing is Chess Puzzles: 22% for Gemini 3.5 Flash Lite and 12% for GPT-5.5 Instant.

Side by side

Gemini 3.5 Flash LiteGPT-5.5 Instant
ProviderGoogleOpenAI
Noometry Index41.542.7
Released2026-07-212026-05-05
WeightsProprietaryProprietary
Context window1.05M—
Max output66K—
Input $ / M tokens$0.30—
Output $ / M tokens$2.50—
Results tracked3927

Sponsored placements are available on pages like this one. Advertise on Noometry

Category by category

Coding GPT-5.5 Instant leads

Gemini 3.5 Flash Lite: 42.4 (#104), GPT-5.5 Instant: 44.3 (#74)

BenchmarkGemini 3.5 Flash LiteGPT-5.5 Instant
SciCode41.3%48.6%
LMArena Coding14531433
LMArena WebDev1440—
WeirdML39%—
ALE-Bench765.27—

Agentic & Tool Use Not comparable

Gemini 3.5 Flash Lite: 25.7 (#107), GPT-5.5 Instant: —

BenchmarkGemini 3.5 Flash LiteGPT-5.5 Instant
APEX-Agents29.3%—
GDP.pdf10%—

Reasoning Gemini 3.5 Flash Lite leads

Gemini 3.5 Flash Lite: 27.8 (#114), GPT-5.5 Instant: 24.9 (#155)

BenchmarkGemini 3.5 Flash LiteGPT-5.5 Instant
CritPt0%0%
Chess Puzzles22%12%
LMArena Hard Prompts14411426
Epoch Capabilities Index145.13142.52
ARC-AGI-210.3%—
NYT Connections (extended)60.4%—
ARC-AGI-153.5%—
Mystery Game Puzzles19%—
DTBench83.5%—
LMCA37.6%—

Math Too close to call

Gemini 3.5 Flash Lite: 25.9 (#264), GPT-5.5 Instant: 26.5 (#259)

BenchmarkGemini 3.5 Flash LiteGPT-5.5 Instant
FrontierMath (Tiers 1-3)26%26.3%
FrontierMath Tier 40%2.4%
OTIS Mock AIME 2024-202571.1%68.1%
LMArena Math14331420
ProofBench13%—

Knowledge Gemini 3.5 Flash Lite leads

Gemini 3.5 Flash Lite: 50.1 (#72), GPT-5.5 Instant: 48.9 (#74)

BenchmarkGemini 3.5 Flash LiteGPT-5.5 Instant
GPQA Diamond83.3%82.5%
LMArena Expert14351409

Multimodal Gemini 3.5 Flash Lite leads

Gemini 3.5 Flash Lite: 41.1 (#40), GPT-5.5 Instant: 40.0 (#52)

BenchmarkGemini 3.5 Flash LiteGPT-5.5 Instant
LMArena Vision12681250
LMArena Document—1403

Multilingual Too close to call

Gemini 3.5 Flash Lite: 53.5 (#63), GPT-5.5 Instant: 52.8 (#80)

BenchmarkGemini 3.5 Flash LiteGPT-5.5 Instant
LMArena Non-English14271417
LMArena Chinese14691456
LMArena French14511428
LMArena German14541411
LMArena Japanese14271408
LMArena Korean14071392
LMArena Russian14431431
LMArena Spanish14421429

Instruction Following Too close to call

Gemini 3.5 Flash Lite: 74.8 (#85), GPT-5.5 Instant: 74.2 (#100)

BenchmarkGemini 3.5 Flash LiteGPT-5.5 Instant
LMArena Instruction Following14201406

Long Context Too close to call

Gemini 3.5 Flash Lite: 43.9 (#84), GPT-5.5 Instant: 43.4 (#96)

BenchmarkGemini 3.5 Flash LiteGPT-5.5 Instant
LMArena Longer Query14351422

Writing & Preference Gemini 3.5 Flash Lite leads

Gemini 3.5 Flash Lite: 64.2 (#57), GPT-5.5 Instant: 61.8 (#85)

BenchmarkGemini 3.5 Flash LiteGPT-5.5 Instant
LMArena Text14351419
LMArena Creative Writing14201419
LMArena Multi-Turn14451433
EQ-Bench Creative Writing1559—

Frequently asked questions

Is Gemini 3.5 Flash Lite better than GPT-5.5 Instant?

GPT-5.5 Instant is the stronger model overall, scoring 42.7 to 41.5 on the Noometry Index.

Is Gemini 3.5 Flash Lite or GPT-5.5 Instant better for coding?

GPT-5.5 Instant scores higher on coding benchmarks: 44.3 versus 42.4 in the Noometry coding category.

How many benchmarks do Gemini 3.5 Flash Lite and GPT-5.5 Instant share?

26 benchmarks have published results for both models. Gemini 3.5 Flash Lite has 39 scored results on Noometry and GPT-5.5 Instant has 27.

Related comparisons

Go deeper