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Gemini 2.5 Flash vs o3-mini-high

Google Gemini 2.5 Flash vs OpenAI o3-mini-high — side-by-side specs.

Google
Gemini 2.5 Flash
OpenAI
o3-mini-high
Overview
CompanyGoogleOpenAI
Release dateApr 17 2025Jan 31 2025
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Timeline
Release gapo3-mini-high shipped 76 days before Gemini 2.5 Flash

Which is better: Gemini 2.5 Flash or o3-mini-high?

Gemini 2.5 Flash and o3-mini-high don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. o3-mini-high shipped 76 days before Gemini 2.5 Flash, 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 — Gemini 2.5 Flash and o3-mini-high don't publish scores on any of the same benchmarks.

Frequently asked questions

When was Gemini 2.5 Flash released?
Gemini 2.5 Flash was released by Google on Apr 17 2025.
When was o3-mini-high released?
o3-mini-high was released by OpenAI on Jan 31 2025.

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