Model comparison

Gemini 3.5 Flash Lite vs o1-pro

Gemini 3.5 Flash Lite is the stronger model overall, scoring 41.5 to 31.5 on the Noometry Index.

Last verified . 1 shared benchmarks.

Gemini 3.5 Flash Lite Google

41.5

Rank #133 Confirmed

o1-pro OpenAI

31.5

Rank #271 Reported

Summary

  • They share 1 benchmark with published results for both. Gemini 3.5 Flash Lite scores higher in 2 categories and o1-pro in 0 categories; 2 gaps are clear of the uncertainty.
  • The widest gap is in knowledge, where Gemini 3.5 Flash Lite leads 50.1 to 29.7.
  • The biggest single-benchmark swing is ARC-AGI-1: 53.5% for Gemini 3.5 Flash Lite and 23.3% for o1-pro.
  • Gemini 3.5 Flash Lite is cheaper at $0.30 / $2.50 per million input/output tokens, against $150 / $600 for o1-pro.
  • Gemini 3.5 Flash Lite accepts more context: 1.05M tokens versus 200K.

Side by side

Gemini 3.5 Flash Lite and o1-pro specifications
Gemini 3.5 Flash Liteo1-pro
ProviderGoogleOpenAI
Noometry Index41.531.5
Released2026-07-212025-03-19
WeightsProprietaryProprietary
Context window1.05M200K
Max output66K100K
Input $ / M tokens$0.30$150
Output $ / M tokens$2.50$600
Results tracked393

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Category by category

Coding Not comparable

Gemini 3.5 Flash Lite: 42.4 (#104), o1-pro: —

Coding benchmarks
BenchmarkGemini 3.5 Flash Liteo1-pro
LMArena WebDev1440—
SciCode41.3%—
WeirdML39%—
LMArena Coding1453—
ALE-Bench765.27—

Agentic & Tool Use Not comparable

Gemini 3.5 Flash Lite: 25.7 (#107), o1-pro: —

Agentic & Tool Use benchmarks
BenchmarkGemini 3.5 Flash Liteo1-pro
APEX-Agents29.3%—
GDP.pdf10%—

Reasoning Gemini 3.5 Flash Lite leads

Gemini 3.5 Flash Lite: 27.8 (#114), o1-pro: 20.4 (#239)

Reasoning benchmarks
BenchmarkGemini 3.5 Flash Liteo1-pro
ARC-AGI-153.5%23.3%
ARC-AGI-210.3%—
NYT Connections (extended)60.4%—
CritPt0%—
Chess Puzzles22%—
EnigmaEval—6.1%
LMArena Hard Prompts1441—
Mystery Game Puzzles19%—
DTBench83.5%—
LMCA37.6%—
Epoch Capabilities Index145.13—

Math Not comparable

Gemini 3.5 Flash Lite: 25.9 (#264), o1-pro: —

Math benchmarks
BenchmarkGemini 3.5 Flash Liteo1-pro
FrontierMath (Tiers 1-3)26%—
FrontierMath Tier 40%—
OTIS Mock AIME 2024-202571.1%—
ProofBench13%—
LMArena Math1433—

Knowledge Gemini 3.5 Flash Lite leads

Gemini 3.5 Flash Lite: 50.1 (#72), o1-pro: 29.7 (#234)

Knowledge benchmarks
BenchmarkGemini 3.5 Flash Liteo1-pro
GPQA Diamond83.3%—
Humanity's Last Exam—8.1%
LMArena Expert1435—

Multimodal Not comparable

Gemini 3.5 Flash Lite: 41.1 (#40), o1-pro: —

Multimodal benchmarks
BenchmarkGemini 3.5 Flash Liteo1-pro
LMArena Vision1268—

Multilingual Not comparable

Gemini 3.5 Flash Lite: 53.5 (#63), o1-pro: —

Multilingual benchmarks
BenchmarkGemini 3.5 Flash Liteo1-pro
LMArena Non-English1427—
LMArena Chinese1469—
LMArena French1451—
LMArena German1454—
LMArena Japanese1427—
LMArena Korean1407—
LMArena Russian1443—
LMArena Spanish1442—

Instruction Following Not comparable

Gemini 3.5 Flash Lite: 74.8 (#85), o1-pro: —

Instruction Following benchmarks
BenchmarkGemini 3.5 Flash Liteo1-pro
LMArena Instruction Following1420—

Long Context Not comparable

Gemini 3.5 Flash Lite: 43.9 (#84), o1-pro: —

Long Context benchmarks
BenchmarkGemini 3.5 Flash Liteo1-pro
LMArena Longer Query1435—

Writing & Preference Not comparable

Gemini 3.5 Flash Lite: 64.2 (#57), o1-pro: —

Writing & Preference benchmarks
BenchmarkGemini 3.5 Flash Liteo1-pro
LMArena Text1435—
LMArena Creative Writing1420—
EQ-Bench Creative Writing1559—
LMArena Multi-Turn1445—

Frequently asked questions

Is Gemini 3.5 Flash Lite better than o1-pro?

Gemini 3.5 Flash Lite is the stronger model overall, scoring 41.5 to 31.5 on the Noometry Index.

Which is cheaper, Gemini 3.5 Flash Lite or o1-pro?

Gemini 3.5 Flash Lite is cheaper. It lists at $0.30 per million input tokens and $2.50 per million output tokens; o1-pro lists at $150 and $600.

Which has the bigger context window?

Gemini 3.5 Flash Lite does, with 1.05M tokens against 200K.

How many benchmarks do Gemini 3.5 Flash Lite and o1-pro share?

1 benchmark has published results for both models. Gemini 3.5 Flash Lite has 39 scored results on Noometry and o1-pro has 3.

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