§ feed · storyline

Introducing GPT-5.3-Codex

OpenAI launches GPT-5.3-Codex, a Codex-native agent combining frontier coding performance with general reasoning for long-horizon technical tasks.

Feb 5 · 01:00:00 · primary fetch1 sourceupdated Feb 5 · 01:00:00

GPT-5.3-Codex is a Codex-native agent that pairs frontier coding performance with general reasoning to support long-horizon, real-world technical work.

read full article on openai.com ↗

§ sources1 publication · timeline below

openai.comIntroducing GPT-5.3-Codexprimary01:00:00