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

OpenAI

GPT-5-Codex

Released 4 months ago ยท Sep 15 2025

About GPT-5-Codex

More detailed information about GPT-5-Codex will be added here as the timeline data becomes more comprehensive.

This page is ready for additional content including benchmarks, features, capabilities, comparisons, and more.