Noometry

Model comparison

Gemini 2.0 Flash-Lite vs GPT-5.5 Pro

GPT-5.5 Pro is the stronger model overall, scoring 64.3 to 37.8 on the Noometry Index.

Last verified . 1 shared benchmarks.

Gemini 2.0 Flash-Lite Google

37.8

Rank #194 Confirmed

GPT-5.5 Pro OpenAI

64.3

Rank #8 Confirmed

Summary

  • They share 1 benchmark with published results for both. Gemini 2.0 Flash-Lite scores higher in 0 categories and GPT-5.5 Pro in 3 categories; 3 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where GPT-5.5 Pro leads 73.3 to 22.0.
  • The biggest single-benchmark swing is DTBench: 52.5% for Gemini 2.0 Flash-Lite and 96% for GPT-5.5 Pro.

Side by side

Gemini 2.0 Flash-LiteGPT-5.5 Pro
ProviderGoogleOpenAI
Noometry Index37.864.3
Released2025-02-052026-04-23
WeightsProprietaryProprietary
Context window—1.05M
Max output—128K
Input $ / M tokens—$30
Output $ / M tokens—$180
Results tracked3214

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Category by category

Coding Not comparable

Gemini 2.0 Flash-Lite: 37.9 (#185), GPT-5.5 Pro: —

BenchmarkGemini 2.0 Flash-LiteGPT-5.5 Pro
LiveBench Coding47.1%—
LMArena Coding1322—

Reasoning GPT-5.5 Pro leads

Gemini 2.0 Flash-Lite: 22.0 (#210), GPT-5.5 Pro: 73.3 (#10)

BenchmarkGemini 2.0 Flash-LiteGPT-5.5 Pro
DTBench52.5%96%
ARC-AGI-2—84.6%
SimpleBench—76.9%
ARC-AGI-1—96.5%
CritPt—30.6%
Chess Puzzles—64%
LiveBench Reasoning50.1%—
LMArena Hard Prompts1324—
LiveBench Data Analysis65.5%—
LMCA—53.9%
Epoch Capabilities Index—162.07
ForecastBench57.1—
LiveBench54.3%—

Math GPT-5.5 Pro leads

Gemini 2.0 Flash-Lite: 34.1 (#196), GPT-5.5 Pro: 84.0 (#10)

BenchmarkGemini 2.0 Flash-LiteGPT-5.5 Pro
FrontierMath (Tiers 1-3)—87.7%
FrontierMath Tier 4—78%
OTIS Mock AIME 2024-2025—100%
Omni-MATH37.4%—
LiveBench Math58.1%—
LMArena Math1309—
FrontierMath (Feb 2025 set)—52.4%
FrontierMath Tier 4 (v1)—39.6%

Knowledge GPT-5.5 Pro leads

Gemini 2.0 Flash-Lite: 35.0 (#189), GPT-5.5 Pro: 64.1 (#19)

BenchmarkGemini 2.0 Flash-LiteGPT-5.5 Pro
GPQA Diamond—93.9%
MMLU-Pro72%—
GPQA (HELM)50%—
LMArena Expert1305—

Multimodal Not comparable

Gemini 2.0 Flash-Lite: 31.2 (#109), GPT-5.5 Pro: —

BenchmarkGemini 2.0 Flash-LiteGPT-5.5 Pro
LMArena Vision1100—

Multilingual Not comparable

Gemini 2.0 Flash-Lite: 46.0 (#161), GPT-5.5 Pro: —

BenchmarkGemini 2.0 Flash-LiteGPT-5.5 Pro
LMArena Non-English1323—
LMArena Chinese1339—
LMArena French1347—
LMArena German1306—
LMArena Japanese1301—
LMArena Korean1325—
LMArena Russian1328—
LMArena Spanish1313—

Instruction Following Not comparable

Gemini 2.0 Flash-Lite: 70.4 (#163), GPT-5.5 Pro: —

BenchmarkGemini 2.0 Flash-LiteGPT-5.5 Pro
LiveBench Instruction Following78.3%—
IFEval82.4%—
LMArena Instruction Following1305—

Long Context Not comparable

Gemini 2.0 Flash-Lite: 40.1 (#160), GPT-5.5 Pro: —

BenchmarkGemini 2.0 Flash-LiteGPT-5.5 Pro
LMArena Longer Query1320—

Writing & Preference Not comparable

Gemini 2.0 Flash-Lite: 51.7 (#177), GPT-5.5 Pro: —

BenchmarkGemini 2.0 Flash-LiteGPT-5.5 Pro
LMArena Text1330—
LMArena Creative Writing1319—
WildBench79%—
LMArena Multi-Turn1307—
LiveBench Language34.3%—

Frequently asked questions

Is Gemini 2.0 Flash-Lite better than GPT-5.5 Pro?

GPT-5.5 Pro is the stronger model overall, scoring 64.3 to 37.8 on the Noometry Index.

How many benchmarks do Gemini 2.0 Flash-Lite and GPT-5.5 Pro share?

1 benchmark has published results for both models. Gemini 2.0 Flash-Lite has 32 scored results on Noometry and GPT-5.5 Pro has 14.

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