Noometry

Model comparison

Gemini 2.0 Pro vs GPT-5.1

GPT-5.1 is the stronger model overall, scoring 49.0 to 39.1 on the Noometry Index.

Last verified . 10 shared benchmarks.

Gemini 2.0 Pro Google

39.1

Rank #173 Confirmed

GPT-5.1 OpenAI

49.0

Rank #53 Confirmed

Summary

  • They share 10 benchmarks with published results for both. Gemini 2.0 Pro scores higher in 0 categories and GPT-5.1 in 7 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in long context, where GPT-5.1 leads 47.6 to 29.2.
  • The biggest single-benchmark swing is LiveBench Reasoning: 60.1% for Gemini 2.0 Pro and 95.8% for GPT-5.1.

Side by side

Gemini 2.0 ProGPT-5.1
ProviderGoogleOpenAI
Noometry Index39.149.0
Released2025-02-052025-11-13
WeightsProprietaryProprietary
Context window—400K
Max output—128K
Input $ / M tokens—$1.25
Output $ / M tokens—$10
Results tracked1463

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Category by category

Coding GPT-5.1 leads

Gemini 2.0 Pro: 37.8 (#187), GPT-5.1: 46.4 (#66)

BenchmarkGemini 2.0 ProGPT-5.1
LiveBench Coding63.5%72.5%
SWE-bench Verified—68%
SWE-bench Verified (bash only)—66%
Aider Polyglot35.6%—
LMArena WebDev—1395
SciCode—43.3%
GSO—13.7%
WeirdML—60.8%
LMArena Coding—1454
ALE-Bench—1,192

Agentic & Tool Use Not comparable

Gemini 2.0 Pro: —, GPT-5.1: 32.7 (#60)

BenchmarkGemini 2.0 ProGPT-5.1
Terminal-Bench—47.6%
DeepResearch Bench—42.8%
LMArena Search—1199
Vending-Bench 2—1,473

Reasoning GPT-5.1 leads

Gemini 2.0 Pro: 22.3 (#198), GPT-5.1: 39.8 (#58)

BenchmarkGemini 2.0 ProGPT-5.1
EnigmaEval0.7%11.2%
LiveBench Reasoning60.1%95.8%
LiveBench Data Analysis68%72.1%
Epoch Capabilities Index135.06149.64
LiveBench65.1%78.8%
ARC-AGI-2—17.6%
SimpleBench—53.2%
ARC-AGI-1—72.8%
CritPt—4.9%
Chess Puzzles—32%
LMArena Hard Prompts—1457
Mystery Game Puzzles—19%
DTBench—90.1%
LMCA—43.9%
ForecastBench—58.1

Math GPT-5.1 leads

Gemini 2.0 Pro: 39.7 (#100), GPT-5.1: 52.2 (#51)

BenchmarkGemini 2.0 ProGPT-5.1
LiveBench Math71%94.5%
OTIS Mock AIME 2024-2025—88.6%
Omni-MATH—46.4%
LMArena Math—1447
MATH Level 583.5%—
FrontierMath (Feb 2025 set)—31%
FrontierMath Tier 4 (v1)—12.5%

Knowledge GPT-5.1 leads

Gemini 2.0 Pro: 36.5 (#167), GPT-5.1: 50.6 (#71)

BenchmarkGemini 2.0 ProGPT-5.1
GPQA Diamond65.7%87.6%
Humanity's Last Exam—23.7%
SimpleQA Verified—48%
MMLU-Pro—57.9%
Confabulations18.4%—
Vectara Hallucination Rate—10.9%
GPQA (HELM)—44.2%
LMArena Expert—1470

Multimodal Not comparable

Gemini 2.0 Pro: —, GPT-5.1: 44.8 (#19)

BenchmarkGemini 2.0 ProGPT-5.1
LMArena Vision—1250
VPCT—58.7%
LMArena Document—1403

Multilingual Not comparable

Gemini 2.0 Pro: —, GPT-5.1: 53.8 (#56)

BenchmarkGemini 2.0 ProGPT-5.1
LMArena Non-English—1431
LMArena Chinese—1495
LMArena French—1450
LMArena German—1438
LMArena Japanese—1453
LMArena Korean—1401
LMArena Russian—1435
LMArena Spanish—1433

Instruction Following GPT-5.1 leads

Gemini 2.0 Pro: 75.5 (#59), GPT-5.1: 83.9 (#1)

BenchmarkGemini 2.0 ProGPT-5.1
LiveBench Instruction Following83.4%93.3%
IFEval—93.5%
LMArena Instruction Following—1443

Long Context GPT-5.1 leads

Gemini 2.0 Pro: 29.2 (#292), GPT-5.1: 47.6 (#14)

BenchmarkGemini 2.0 ProGPT-5.1
Fiction.LiveBench41.7%—
CL-bench—23.7%
CL-bench Life—17.3%
LMArena Longer Query—1447

Writing & Preference GPT-5.1 leads

Gemini 2.0 Pro: 52.7 (#165), GPT-5.1: 64.5 (#55)

BenchmarkGemini 2.0 ProGPT-5.1
LiveBench Language44.9%80.2%
LMArena Text—1443
LMArena Creative Writing—1427
WildBench—86.3%
LMArena Multi-Turn—1450

Frequently asked questions

Is Gemini 2.0 Pro better than GPT-5.1?

GPT-5.1 is the stronger model overall, scoring 49.0 to 39.1 on the Noometry Index.

Is Gemini 2.0 Pro or GPT-5.1 better for coding?

GPT-5.1 scores higher on coding benchmarks: 46.4 versus 37.8 in the Noometry coding category.

How many benchmarks do Gemini 2.0 Pro and GPT-5.1 share?

10 benchmarks have published results for both models. Gemini 2.0 Pro has 14 scored results on Noometry and GPT-5.1 has 63.

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