AI Model Release Tracker - Timeline of Major AI Models from 2022-2026

Gemini 1.5 Flash vs o1-pro

Google
Gemini 1.5 Flash
OpenAI
o1-pro
Overview
CompanyGoogleOpenAI
Release dateMay 14 2024Mar 19 2025
AccessProprietaryProprietary
Timeline
Release gapGemini 1.5 Flash shipped 309 days before o1-pro

Which is better: Gemini 1.5 Flash or o1-pro?

Gemini 1.5 Flash and o1-pro don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Gemini 1.5 Flash shipped 309 days before o1-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 — Gemini 1.5 Flash and o1-pro don't publish scores on any of the same benchmarks.

Frequently asked questions

Gemini 1.5 Flash was released by Google on May 14 2024.

o1-pro was released by OpenAI on Mar 19 2025.

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