AIOpenAI's GPT-5.2-Codex Brings Long-Horizon Agentic Coding to ChatGPT
OpenAI's GPT-5.2-Codex lands May 29, 2026, a long-horizon agentic coding model tuned for big refactors, reliable tool use, and stronger secure coding.

Dr. Nova Chen★May 31, 2026★5 min read