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Gemini 1.5 Pro vs o3-mini

Google Gemini 1.5 Pro vs OpenAI o3-mini — side-by-side specs.

Google
Gemini 1.5 Pro
OpenAI
o3-mini
Overview
CompanyGoogleOpenAI
Release dateFeb 15 2024Jan 31 2025
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapGemini 1.5 Pro shipped 351 days before o3-mini

Which is better: Gemini 1.5 Pro or o3-mini?

Gemini 1.5 Pro and o3-mini do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. Gemini 1.5 Pro shipped 351 days before o3-mini, so benchmark comparisons should account for the intervening progress.

Published specifications for these two models are limited — see each model page for the latest details.

Direct benchmark comparisons are unavailable — at least one of these models has not published scores on GPQA Diamond, SWE-Bench Verified, or MMMU.

Frequently asked questions

When was Gemini 1.5 Pro released?
Gemini 1.5 Pro was released by Google on Feb 15 2024.
When was o3-mini released?
o3-mini was released by OpenAI on Jan 31 2025.

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