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Gemini Omni vs o3

Google Gemini Omni vs OpenAI o3 — side-by-side specs.

Google
Gemini Omni
OpenAI
o3
Overview
CompanyGoogleOpenAI
Release dateMay 19 2026Apr 16 2025
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapo3 shipped 398 days before Gemini Omni

Which is better: Gemini Omni or o3?

Gemini Omni and o3 do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. o3 shipped 398 days before Gemini Omni, 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 Omni released?
Gemini Omni was released by Google on May 19 2026.
When was o3 released?
o3 was released by OpenAI on Apr 16 2025.

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