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  1. Behind the Craft
  2. ChatGPT Work + Codex Tutorial: My Complete System at OpenAI | Jason Liu
ChatGPT Work + Codex Tutorial: My Complete System at OpenAI | Jason Liu

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

Behind the Craft · Jul 26, 2026

OpenAI's Jason Liu reveals his system for using ChatGPT Work and Codex as a personal OS, automating tasks and building custom learning apps.

OpenAI's Jason Liu Uses a "Chief of Staff" AI Agent to Prioritize His Workday

Jason automates a "chief of staff" thread that runs multiple times a day. It scans his email, Slack, and Linear board to synthesize priorities, pre-draft responses, and even manage tasks like flight check-ins, creating a focused overview of his work.

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

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

Behind the Craft·2 days ago

Train an AI to Mimic Your Writing by Analyzing Your Sent Slack Messages

Jason creates personalized "write me" skills by instructing his AI to analyze his past Slack messages or sent emails. This allows the AI to learn his communication style, tone, and how he tailors messages for different audiences like executives versus team members.

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

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

Behind the Craft·2 days ago

Build a "Self-Improve" Skill For Your AI Agent to Autonomously Refine Its Performance

Jason created a meta-skill that analyzes session logs of his other AI skills. It identifies the most frequently used skills, reviews the user feedback given in those sessions, and then suggests or automatically implements improvements, creating a self-correcting system.

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

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

Behind the Craft·2 days ago

Improve AI Project Outcomes by Making the AI Write Its Own Plan and Goals

Instead of meticulously writing a project spec, Jason describes his high-level objective to his AI and has it generate its own `goal.md` (success criteria) and `plan.md` (implementation details). This approach often yields better results because the AI sets a plan it can execute effectively.

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

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

Behind the Craft·2 days ago

The Most Valuable Skill in the AI Era Is Articulating What You Dislike

The primary job for humans collaborating with AI is to be dissatisfied with its output and learn the vocabulary to explain *why*. Progress comes not from coding solutions, but from clearly articulating problems with the AI's work, like a poor UX or inefficient design.

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

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

Behind the Craft·2 days ago

Use a Centralized Obsidian Vault as Your AI Agent's Primary Knowledge Base

Jason uses a single Obsidian Vault as the foundational project for his AI agent. This collection of markdown files contains all his context, notes, and preferences. By starting every task from this vault, he ensures the agent always has access to a persistent, well-structured knowledge base.

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

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

Behind the Craft·2 days ago

Delegate Video Editing and Revisions to an AI Agent via Remote Control

While on a bike ride, Jason used his phone to remotely command his AI to find a video file on his laptop, re-export it with requested subtitle changes, post it to Slack, and then autonomously handle subsequent revision rounds based on team feedback.

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

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

Behind the Craft·2 days ago

Use AI Agents to Prepare Decision-Making Context, Not Just Deliver Summaries

When shopping online, Jason has his AI research products and then open each final recommendation in a separate browser tab. This presents him with a pre-vetted set of options ready for his final review, letting him make the high-context decision instead of reading a summary.

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

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

Behind the Craft·2 days ago

Treat Pinned AI Chat Threads as Long-Running, Context-Aware Project Workspaces

Jason organizes his AI work using pinned threads as dedicated, persistent workspaces for each project. He leverages the AI's strong context compaction to maintain long-running conversations without losing history, effectively turning each thread into a self-contained project environment.

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

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

Behind the Craft·2 days ago