00:00 Introducing Codex 01:38 Setup and kicking off tasks 05:05 Environments 07:20 Guiding Codex with a Markdown file 12:00 The Codex origin story 14:25 Verifying and reviewing Codex tasks 17:28 Using Codex at OpenAI 20:48 Availability via ChatGPT 21:22 Roadmap and Codex CLI updates