ChatGPT Work + Codex Tutorial: My Complete System at OpenAI | Jason Liu

AI agents like Codex and ChatGPT Work transform productivity by shifting the focus from manual execution to high-level management and iterative feedback. Jason Liu, from the OpenAI Codex team, demonstrates how these tools automate daily operations—such as managing Slack, email, and project boards—through "heartbeat" threads that prioritize tasks and pre-draft responses. Beyond operational efficiency, these agents enable users to build complex, custom applications, like a personalized drum-learning tool, by defining clear success criteria and refining outputs through specific, goal-oriented prompts. Success with AI hinges on the ability to articulate precise requirements and maintain a critical eye toward the user experience, rather than merely writing code. By leveraging computer use and browser integration, these systems handle multi-step workflows, allowing work to continue autonomously even when the user is offline.