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

Gemini 3.1 Flash vs o1-pro

Google
Gemini 3.1 Flash
OpenAI
o1-pro
Overview
CompanyGoogleOpenAI
Release dateFeb 26 2026Mar 19 2025
AccessProprietaryProprietary
Timeline
Release gapo1-pro shipped 344 days before Gemini 3.1 Flash

Which is better: Gemini 3.1 Flash or o1-pro?

Gemini 3.1 Flash and o1-pro don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. o1-pro shipped 344 days before Gemini 3.1 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 3.1 Flash and o1-pro don't publish scores on any of the same benchmarks.

Frequently asked questions

Gemini 3.1 Flash was released by Google on Feb 26 2026.

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

Other comparisons