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

OpenAI

o3-pro

Released 10 months ago · Jun 10 2025

About o3-pro

o3-pro is an AI model released by OpenAI on Jun 10 2025, 27 days after GPT-4.1 mini. It is the 17th tracked release from OpenAI out of 31 total.

About OpenAI: Creators of ChatGPT and the GPT series of models. Pioneered large-scale language model research.

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