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Gemini 1.5 Flash vs o3-mini

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

Google
Gemini 1.5 Flash
OpenAI
o3-mini
Overview
CompanyGoogleOpenAI
Release dateMay 14 2024Jan 31 2025
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Timeline
Release gapGemini 1.5 Flash shipped 262 days before o3-mini

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

Gemini 1.5 Flash and o3-mini don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Gemini 1.5 Flash shipped 262 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 — Gemini 1.5 Flash and o3-mini don't publish scores on any of the same benchmarks.

Frequently asked questions

When was Gemini 1.5 Flash released?
Gemini 1.5 Flash was released by Google on May 14 2024.
When was o3-mini released?
o3-mini was released by OpenAI on Jan 31 2025.

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