Noometry

Model comparison

Gemini 3.1 Pro Preview vs GPT-4o

Gemini 3.1 Pro Preview is the stronger model overall, scoring 56.7 to 28.5 on the Noometry Index.

Last verified . 41 shared benchmarks.

Gemini 3.1 Pro Preview Google

56.7

Rank #20 Confirmed

GPT-4o OpenAI

28.5

Rank #316 Confirmed

Summary

  • They share 41 benchmarks with published results for both. Gemini 3.1 Pro Preview scores higher in 10 categories and GPT-4o in 0 categories; 10 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Gemini 3.1 Pro Preview leads 71.7 to 9.4.
  • The biggest single-benchmark swing is ARC-AGI-1: 98% for Gemini 3.1 Pro Preview and 4.5% for GPT-4o.
  • Both cost about the same: $2 input and $12 output per million tokens.
  • Gemini 3.1 Pro Preview accepts more context: 1.05M tokens versus 128K.

Side by side

Gemini 3.1 Pro PreviewGPT-4o
ProviderGoogleOpenAI
Noometry Index56.728.5
Released2026-02-192024-05-13
WeightsProprietaryProprietary
Context window1.05M128K
Max output66K16K
Input $ / M tokens$2$2.50
Output $ / M tokens$12$10
Results tracked7172

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Category by category

Coding Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 42.7 (#88), GPT-4o: 25.1 (#323)

BenchmarkGemini 3.1 Pro PreviewGPT-4o
SWE-bench Verified75.6%31%
GSO22.6%0%
WeirdML72.1%25.1%
LMArena Coding14831297
DeepSWE11.7%—
SWE-bench Verified (bash only)—21.6%
Aider Polyglot—45.3%
LMArena WebDev1446—
SciCode58.9%—
BigCodeBench Instruct—51.1%
LiveBench Coding—51.4%
MirrorCode8.9%—
BigCodeBench Complete—61.1%
CadEval—26%
ALE-Bench1,161—
AlgoTune2.02—
HumanEval+—87.2%
MBPP+—72.2%

Agentic & Tool Use Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 37.7 (#33), GPT-4o: 20.8 (#133)

BenchmarkGemini 3.1 Pro PreviewGPT-4o
BALROG57%32.3%
LMArena Search12111006
METR Time Horizons77%40.8%
Terminal-Bench80.2%—
APEX-Agents35.3%—
GDPval—9.9%
TheAgentCompany—8.6%
τ²-bench Banking26%—
Cybench—12.5%
DeepResearch Bench47.8%—
PostTrainBench22%—
ExploitBench26.1%—
GBAEval0.8%—
GDP.pdf17%—
Vending-Bench 23,774—

Reasoning Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 71.7 (#9), GPT-4o: 9.4 (#338)

BenchmarkGemini 3.1 Pro PreviewGPT-4o
ARC-AGI-277.1%0%
SimpleBench79.6%17.8%
ARC-AGI-198%4.5%
CritPt17.7%0%
Chess Puzzles55%13%
EnigmaEval36.8%0.8%
LMArena Hard Prompts14841281
DTBench97.1%64.5%
LMCA53.8%16.6%
Epoch Capabilities Index154.92128.97
ForecastBench5957.7
NYT Connections (extended)97.4%—
Thematic Generalization79.4%—
EBR-Bench14.3%—
LiveBench Reasoning—55.8%
Mystery Game Puzzles34%—
LiveBench Data Analysis—60.9%
LiveBench—55.3%

Math Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 61.8 (#28), GPT-4o: 10.2 (#303)

BenchmarkGemini 3.1 Pro PreviewGPT-4o
FrontierMath (Tiers 1-3)59.6%0.4%
OTIS Mock AIME 2024-202595.6%6.4%
LMArena Math14851285
FrontierMath (Feb 2025 set)36.9%0.3%
FrontierMath Tier 426.8%—
MathArena Final-Answer Competitions86.5%—
ProofBench26%—
Omni-MATH—29.3%
LiveBench Math—49.5%
MATH Level 5—53.3%
FrontierMath Tier 4 (v1)16.7%—

Knowledge Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 71.8 (#3), GPT-4o: 28.8 (#235)

BenchmarkGemini 3.1 Pro PreviewGPT-4o
GPQA Diamond94.4%49.2%
Humanity's Last Exam46.4%2.7%
SimpleQA Verified73.5%26%
Vectara Hallucination Rate10.4%9.6%
LMArena Expert14841250
MMLU-Pro—71.3%
Confabulations—15.3%
GPQA (HELM)—52%
MMLU—88.1%

Multimodal Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 38.1 (#60), GPT-4o: 33.9 (#85)

BenchmarkGemini 3.1 Pro PreviewGPT-4o
LMArena Vision12961137
Video-MME—71.9%
GeoBench—71%
VPCT—40%
Blueprint-Bench 226.5%—
Furniture Assembly26.7%—
LMArena Document1444—
ScienceQA—88.5%

Multilingual Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 57.1 (#11), GPT-4o: 43.4 (#181)

BenchmarkGemini 3.1 Pro PreviewGPT-4o
LMArena Non-English14751283
LMArena Chinese15281277
LMArena French14881303
LMArena German14911282
LMArena Japanese14941257
LMArena Korean14581234
LMArena Russian14961286
LMArena Spanish14801292

Instruction Following Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 77.1 (#31), GPT-4o: 66.8 (#202)

BenchmarkGemini 3.1 Pro PreviewGPT-4o
LMArena Instruction Following14651278
LiveBench Instruction Following—68.6%
IFEval—81.7%

Long Context Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 47.3 (#17), GPT-4o: 39.4 (#174)

BenchmarkGemini 3.1 Pro PreviewGPT-4o
LMArena Longer Query14821289
Fiction.LiveBench—66.7%
CL-bench20.8%—
CL-bench Life16.9%—

Writing & Preference Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 66.3 (#36), GPT-4o: 52.8 (#160)

BenchmarkGemini 3.1 Pro PreviewGPT-4o
LMArena Text14801300
LMArena Creative Writing14821291
LMArena Multi-Turn14861302
Short-Story Creative Writing—81.8%
EQ-Bench Creative Writing1491—
WildBench—82.8%
EQ-Bench 41142—
LiveBench Language—47.6%

Frequently asked questions

Is Gemini 3.1 Pro Preview better than GPT-4o?

Gemini 3.1 Pro Preview is the stronger model overall, scoring 56.7 to 28.5 on the Noometry Index.

Which is cheaper, Gemini 3.1 Pro Preview or GPT-4o?

GPT-4o is cheaper. It lists at $2.50 per million input tokens and $10 per million output tokens; Gemini 3.1 Pro Preview lists at $2 and $12.

Is Gemini 3.1 Pro Preview or GPT-4o better for coding?

Gemini 3.1 Pro Preview scores higher on coding benchmarks: 42.7 versus 25.1 in the Noometry coding category.

Which has the bigger context window?

Gemini 3.1 Pro Preview does, with 1.05M tokens against 128K.

How many benchmarks do Gemini 3.1 Pro Preview and GPT-4o share?

41 benchmarks have published results for both models. Gemini 3.1 Pro Preview has 71 scored results on Noometry and GPT-4o has 72.

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