Model comparison

Gemini 3.1 Flash Lite vs Gemini 3 Pro

Gemini 3 Pro is the stronger model overall, scoring 54.7 to 40.4 on the Noometry Index.

Last verified . 33 shared benchmarks.

Gemini 3.1 Flash Lite Google

40.4

Rank #141 Confirmed

Gemini 3 Pro Google

54.7

Rank #23 Confirmed

Summary

  • They share 33 benchmarks with published results for both. Gemini 3.1 Flash Lite scores higher in 0 categories and Gemini 3 Pro in 10 categories; 10 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Gemini 3 Pro leads 52.5 to 22.3.
  • The biggest single-benchmark swing is NYT Connections (extended): 8.2% for Gemini 3.1 Flash Lite and 94.4% for Gemini 3 Pro.

Side by side

Gemini 3.1 Flash Lite and Gemini 3 Pro specifications
Gemini 3.1 Flash LiteGemini 3 Pro
ProviderGoogleGoogle
Noometry Index40.454.7
Released2026-03-032025-11-18
WeightsProprietaryProprietary
Context window1.05M—
Max output66K—
Input $ / M tokens$0.25—
Output $ / M tokens$1.50—
Results tracked3867

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Category by category

Coding Gemini 3 Pro leads

Gemini 3.1 Flash Lite: 37.5 (#179), Gemini 3 Pro: 52.1 (#33)

Coding benchmarks
BenchmarkGemini 3.1 Flash LiteGemini 3 Pro
LMArena WebDev12561439
WeirdML52.2%69.9%
LMArena Coding14001482
ALE-Bench797.731,177
SWE-bench Verified—72.9%
SWE-bench Verified (bash only)—74.2%
SWE-bench Multilingual—68.7%
SciCode41.9%—
GSO—18.6%
AlgoTune—1.83

Agentic & Tool Use Gemini 3 Pro leads

Gemini 3.1 Flash Lite: 29.9 (#72), Gemini 3 Pro: 40.5 (#21)

Agentic & Tool Use benchmarks
BenchmarkGemini 3.1 Flash LiteGemini 3 Pro
DeepResearch Bench37.3%46.3%
Terminal-Bench—69.4%
Berkeley Function Calling Leaderboard—72.5%
GDPval—40.3%
Remote Labor Index—1.3%
τ²-bench Airline—80.5%
τ²-bench Banking—18%
τ²-bench Retail—75.9%
τ²-bench Telecom—91%
BALROG—58.1%
LMArena Search—1207
METR Time Horizons—71%
Vending-Bench 2—5,478

Reasoning Gemini 3 Pro leads

Gemini 3.1 Flash Lite: 22.3 (#181), Gemini 3 Pro: 52.5 (#28)

Reasoning benchmarks
BenchmarkGemini 3.1 Flash LiteGemini 3 Pro
Kagi LLM Benchmark67.2%80.1%
NYT Connections (extended)8.2%94.4%
CritPt1.1%6.9%
Chess Puzzles25%31%
EnigmaEval3%18.2%
LMArena Hard Prompts14071481
Epoch Capabilities Index144.45152.96
ForecastBench54.461.2
ARC-AGI-2—31.1%
SimpleBench—76.4%
ARC-AGI-1—75%
Thematic Generalization63.3%—
DTBench76.8%—
LMCA35%—

Math Gemini 3 Pro leads

Gemini 3.1 Flash Lite: 39.5 (#82), Gemini 3 Pro: 48.8 (#50)

Math benchmarks
BenchmarkGemini 3.1 Flash LiteGemini 3 Pro
OTIS Mock AIME 2024-202580%91.4%
LMArena Math14271475
FrontierMath (Tiers 1-3)27.7%—
MathArena Final-Answer Competitions—67%
ProofBench—20%
Omni-MATH—55.5%
FrontierMath (Feb 2025 set)—37.6%
FrontierMath Tier 4 (v1)—18.8%

Knowledge Gemini 3 Pro leads

Gemini 3.1 Flash Lite: 41.7 (#95), Gemini 3 Pro: 64.3 (#15)

Knowledge benchmarks
BenchmarkGemini 3.1 Flash LiteGemini 3 Pro
GPQA Diamond81.8%92.6%
Humanity's Last Exam8.6%37.5%
Vectara Hallucination Rate8.2%13.6%
LMArena Expert13971475
MMLU-Pro—90.3%
GPQA (HELM)—80.3%

Multimodal Gemini 3 Pro leads

Gemini 3.1 Flash Lite: 38.7 (#57), Gemini 3 Pro: 56.9 (#1)

Multimodal benchmarks
BenchmarkGemini 3.1 Flash LiteGemini 3 Pro
LMArena Vision12401305
GeoBench—84%
VPCT—91%
LMArena Document—1434

Multilingual Gemini 3 Pro leads

Gemini 3.1 Flash Lite: 52.5 (#82), Gemini 3 Pro: 57.1 (#14)

Multilingual benchmarks
BenchmarkGemini 3.1 Flash LiteGemini 3 Pro
LMArena Non-English14101474
LMArena Chinese14611522
LMArena French14231492
LMArena German14291517
LMArena Japanese14111513
LMArena Korean13931449
LMArena Russian14201493
LMArena Spanish14201468

Instruction Following Gemini 3 Pro leads

Gemini 3.1 Flash Lite: 72.9 (#126), Gemini 3 Pro: 76.4 (#42)

Instruction Following benchmarks
BenchmarkGemini 3.1 Flash LiteGemini 3 Pro
LMArena Instruction Following13761458
IFEval—87.7%

Long Context Gemini 3 Pro leads

Gemini 3.1 Flash Lite: 42.5 (#117), Gemini 3 Pro: 44.0 (#75)

Long Context benchmarks
BenchmarkGemini 3.1 Flash LiteGemini 3 Pro
LMArena Longer Query13941472
CL-bench—15.8%

Writing & Preference Gemini 3 Pro leads

Gemini 3.1 Flash Lite: 61.0 (#90), Gemini 3 Pro: 66.6 (#34)

Writing & Preference benchmarks
BenchmarkGemini 3.1 Flash LiteGemini 3 Pro
LMArena Text14161479
LMArena Creative Writing14011482
LMArena Multi-Turn14171484
EQ-Bench Creative Writing—1525
WildBench—85.9%

Frequently asked questions

Is Gemini 3.1 Flash Lite better than Gemini 3 Pro?

Gemini 3 Pro is the stronger model overall, scoring 54.7 to 40.4 on the Noometry Index.

Is Gemini 3.1 Flash Lite or Gemini 3 Pro better for coding?

Gemini 3 Pro scores higher on coding benchmarks: 52.1 versus 37.5 in the Noometry coding category.

How many benchmarks do Gemini 3.1 Flash Lite and Gemini 3 Pro share?

33 benchmarks have published results for both models. Gemini 3.1 Flash Lite has 38 scored results on Noometry and Gemini 3 Pro has 67.

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