Model comparison

Gemini 3 Pro vs GPT-5 Pro

Gemini 3 Pro is the stronger model overall, scoring 54.8 to 46.4 on the Noometry Index.

Last verified . 10 shared benchmarks.

Gemini 3 Pro Google

54.8

Rank #28 Confirmed

GPT-5 Pro OpenAI

46.4

Rank #64 Confirmed

Summary

  • They share 10 benchmarks with published results for both. Gemini 3 Pro scores higher in 4 categories and GPT-5 Pro in 0 categories; 4 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Gemini 3 Pro leads 52.5 to 38.9.
  • The biggest single-benchmark swing is SimpleBench: 76.4% for Gemini 3 Pro and 61.6% for GPT-5 Pro.

Side by side

Gemini 3 Pro and GPT-5 Pro specifications
Gemini 3 ProGPT-5 Pro
ProviderGoogleOpenAI
Noometry Index54.846.4
Released2025-11-182025-10-06
WeightsProprietaryProprietary
Context window—400K
Max output—272K
Input $ / M tokens—$15
Output $ / M tokens—$120
Results tracked6712

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Category by category

Coding Gemini 3 Pro leads

Gemini 3 Pro: 51.6 (#39), GPT-5 Pro: 44.0 (#80)

Coding benchmarks
BenchmarkGemini 3 ProGPT-5 Pro
WeirdML69.9%60.4%
AlgoTune1.831.31
SWE-bench Verified72.9%—
SWE-bench Verified (bash only)74.2%—
LMArena WebDev1440—
SWE-bench Multilingual68.7%—
GSO18.6%—
LMArena Coding1481—
ALE-Bench1,177—

Agentic & Tool Use Not comparable

Gemini 3 Pro: 40.6 (#23), GPT-5 Pro: —

Agentic & Tool Use benchmarks
BenchmarkGemini 3 ProGPT-5 Pro
Terminal-Bench69.4%—
Berkeley Function Calling Leaderboard72.5%—
GDPval40.3%—
Remote Labor Index1.3%—
τ²-bench Airline80.5%—
τ²-bench Banking18%—
τ²-bench Retail75.9%—
τ²-bench Telecom91%—
DeepResearch Bench46.3%—
BALROG58.1%—
LMArena Search1207—
METR Time Horizons71%—
Vending-Bench 25,478—

Reasoning Gemini 3 Pro leads

Gemini 3 Pro: 52.5 (#31), GPT-5 Pro: 38.9 (#62)

Reasoning benchmarks
BenchmarkGemini 3 ProGPT-5 Pro
ARC-AGI-231.1%18.3%
SimpleBench76.4%61.6%
Kagi LLM Benchmark80.1%76.8%
ARC-AGI-175%70.2%
EnigmaEval18.2%18.8%
Epoch Capabilities Index152.92150.28
NYT Connections (extended)94.4%—
CritPt6.9%—
Chess Puzzles31%—
LMArena Hard Prompts1480—
ForecastBench61.2—

Math Gemini 3 Pro leads

Gemini 3 Pro: 49.9 (#59), GPT-5 Pro: 48.5 (#63)

Knowledge Gemini 3 Pro leads

Gemini 3 Pro: 64.4 (#16), GPT-5 Pro: 56.7 (#42)

Knowledge benchmarks
BenchmarkGemini 3 ProGPT-5 Pro
Humanity's Last Exam37.5%31.6%
GPQA Diamond92.6%—
MMLU-Pro90.3%—
Vectara Hallucination Rate13.6%—
GPQA (HELM)80.3%—
LMArena Expert1475—

Multimodal Not comparable

Gemini 3 Pro: 57.6 (#2), GPT-5 Pro: —

Multimodal benchmarks
BenchmarkGemini 3 ProGPT-5 Pro
LMArena Vision1305—
GeoBench84%—
VPCT91%—
LMArena Document1434—

Multilingual Not comparable

Gemini 3 Pro: 56.9 (#16), GPT-5 Pro: —

Multilingual benchmarks
BenchmarkGemini 3 ProGPT-5 Pro
LMArena Non-English1474—
LMArena Chinese1523—
LMArena French1492—
LMArena German1515—
LMArena Japanese1510—
LMArena Korean1448—
LMArena Russian1493—
LMArena Spanish1470—

Instruction Following Not comparable

Gemini 3 Pro: 76.3 (#45), GPT-5 Pro: —

Instruction Following benchmarks
BenchmarkGemini 3 ProGPT-5 Pro
IFEval87.7%—
LMArena Instruction Following1458—

Long Context Not comparable

Gemini 3 Pro: 44.0 (#79), GPT-5 Pro: —

Long Context benchmarks
BenchmarkGemini 3 ProGPT-5 Pro
CL-bench15.8%—
LMArena Longer Query1471—

Writing & Preference Not comparable

Gemini 3 Pro: 66.4 (#35), GPT-5 Pro: —

Writing & Preference benchmarks
BenchmarkGemini 3 ProGPT-5 Pro
LMArena Text1479—
LMArena Creative Writing1482—
EQ-Bench Creative Writing1525—
WildBench85.9%—
LMArena Multi-Turn1484—

Frequently asked questions

Is Gemini 3 Pro better than GPT-5 Pro?

Gemini 3 Pro is the stronger model overall, scoring 54.8 to 46.4 on the Noometry Index.

Is Gemini 3 Pro or GPT-5 Pro better for coding?

Gemini 3 Pro scores higher on coding benchmarks: 51.6 versus 44.0 in the Noometry coding category.

How many benchmarks do Gemini 3 Pro and GPT-5 Pro share?

10 benchmarks have published results for both models. Gemini 3 Pro has 67 scored results on Noometry and GPT-5 Pro has 12.

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