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Bard vs o3-pro

Google Bard vs OpenAI o3-pro — side-by-side specs.

Google
Bard
OpenAI
o3-pro
Overview
CompanyGoogleOpenAI
Release dateMar 21 2023Jun 10 2025
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapBard shipped 812 days before o3-pro

Which is better: Bard or o3-pro?

Bard and o3-pro do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. Bard shipped 812 days before o3-pro, 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 Bard released?
Bard was released by Google on Mar 21 2023.
When was o3-pro released?
o3-pro was released by OpenAI on Jun 10 2025.

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