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

o3-pro vs ChatGLM-6B

OpenAI
o3-pro
Z.ai
ChatGLM-6B
Overview
CompanyOpenAIZ.ai
Release dateJun 10 2025Mar 14 2023
AccessProprietaryOpen Weight
Specifications
Parameters
6B
Timeline
Release gapChatGLM-6B shipped 819 days before o3-pro

Which is better: o3-pro or ChatGLM-6B?

o3-pro and ChatGLM-6B don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. ChatGLM-6B shipped 819 days before o3-pro, so benchmark comparisons should account for the intervening progress.

o3-pro is proprietary, while ChatGLM-6B is open weight.

Direct benchmark comparisons are unavailable — o3-pro and ChatGLM-6B don't publish scores on any of the same benchmarks.

Frequently asked questions

o3-pro was released by OpenAI on Jun 10 2025.

ChatGLM-6B was released by Z.ai on Mar 14 2023.

o3-pro is a proprietary model released by OpenAI. ChatGLM-6B is an open weight model released by Z.ai.

Other comparisons