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

Gemma 3 vs GPT-4.5

Google
Gemma 3
OpenAI
GPT-4.5
Overview
CompanyGoogleOpenAI
Release dateMar 12 2025Feb 27 2025
AccessOpen WeightProprietary
Timeline
Release gapGPT-4.5 shipped 13 days before Gemma 3

Which is better: Gemma 3 or GPT-4.5?

Gemma 3 and GPT-4.5 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. GPT-4.5 shipped 13 days before Gemma 3, so benchmark comparisons should account for the intervening progress.

Gemma 3 is open weight, while GPT-4.5 is proprietary.

Direct benchmark comparisons are unavailable — Gemma 3 and GPT-4.5 don't publish scores on any of the same benchmarks.

Frequently asked questions

Gemma 3 was released by Google on Mar 12 2025.

GPT-4.5 was released by OpenAI on Feb 27 2025.

Gemma 3 is an open weight model released by Google. GPT-4.5 is a proprietary model released by OpenAI.

Other comparisons