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Google DeepMind: Gemini 3.1 Pro

gemini-3-1-pro

Gemini 3.1 Pro is Google DeepMind’s proprietary AI model, released Feb 19, 2026. Its strongest use case is reasoning & knowledge, where it ranks in the 94th percentile of the models Model Beat tracks.

Context
Input
/ 1M
Output
/ 1M
Released
Feb 19, 2026
Modalities
Strongest atReasoning & Knowledge top 6%Agentic & Tools top 17%Math top 26%

Benchmarks

Scores on standardized evaluations. Higher is better — and rank shows where Gemini 3.1 Pro lands among all models tracked on Model Beat.

79.0
Intelligence Index
Epoch AI
79th percentile of tracked models
65.0
Coding Index
Epoch AI
65th percentile of tracked models
83.0
Agentic Index
Epoch AI
83rd percentile of tracked models

Reasoning

7 evals
ARC-AGI98.0%

Abstract visual reasoning

ARC-AGI-277.1%

Harder abstract reasoning

GPQA Diamond94.1%

Graduate-level scientific reasoning

Humanity's Last Exam46.4%

Frontier of human expert knowledge

SimpleBench79.6%

Common-sense trick questions

SimpleQA Verified77.3%

Factual accuracy & hallucination

WeirdML72.1%

Novel ML problem-solving

Coding

3 evals
GSO (code optimization)22.6%

Code performance optimization

SWE-bench Verified75.6%

Real GitHub issue resolution

WebDev Arena1461

Human-rated web development

Math

3 evals
AIME 2024/202595.6%

Olympiad-qualifier math

FrontierMath36.9%

Research-level math problems

FrontierMath Tier 416.7%

Hardest research math

Agentic & Tools

3 evals
APEX33.5%

Multi-step agentic tasks

METR task horizon6.4 h

Autonomous task length

Terminal-Bench80.2%

Command-line agentic tasks

In the news

3

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Frequently asked questions

What is Gemini 3.1 Pro?

Gemini 3.1 Pro is a Gemini-family AI model, from Google DeepMind, released Feb 19, 2026.

Who created Gemini 3.1 Pro?

Gemini 3.1 Pro is an AI model developed by Google DeepMind, part of the Gemini family, released Feb 19, 2026.

How does Gemini 3.1 Pro perform on benchmarks?

On standardized evaluations tracked by Epoch AI, Gemini 3.1 Pro scores 98.0% on ARC-AGI, 77.3% on SimpleQA Verified, 94.1% on GPQA Diamond.

Is Gemini 3.1 Pro open source?

Gemini 3.1 Pro is a proprietary model (API access), available through its provider's API rather than as a downloadable open-weight model.

Benchmark data from Epoch AI (CC BY) and Artificial Analysis; pricing, specs & descriptions from OpenRouter. Data updated Jul 30, 2026.