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Gemini 2.5 Flash vs o4-mini-high

Google Gemini 2.5 Flash vs OpenAI o4-mini-high — side-by-side specs.

Google
Gemini 2.5 Flash
OpenAI
o4-mini-high
Overview
CompanyGoogleOpenAI
Release dateApr 17 2025Apr 16 2025
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Timeline
Release gapo4-mini-high shipped 1 days before Gemini 2.5 Flash

Which is better: Gemini 2.5 Flash or o4-mini-high?

Gemini 2.5 Flash and o4-mini-high don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. o4-mini-high shipped 1 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 o4-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 o4-mini-high released?
o4-mini-high was released by OpenAI on Apr 16 2025.

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