CodexWriting and editing texts is the most common use of ChatGPT worldwide. Many users do not know how to train AI to remember their writing or editing style. AI is trained to deliver responses. It's not something it inherits by default. You must train ChatGPT to use your writing and editing style.
Instead of asking an AI model to remember your style, you can give it a small file system that makes your style visible. It drafts the first version, saves it, waits for your final edit, and then compares the two versions to update the rules it should follow next time.
In this guide, we will show you how to use Codex to tailor your editing style by turning finished edits into reusable writing rules. The core loop is to draft, snapshot, edit, compare, and improve. Over time, every correction becomes part of the system, so the next draft starts closer to what you actually want.
You can also use Claude Code to teach an AI model to edit like you. The following steps are similar in both Codex and Claude Code. All you have to do is copy the same prompts we showed you with Codex and paste it in Claude Code. The interface of both AI models is similar.
You’ll build a copywriting workspace where your AI can draft, save its first attempt, store your final edit, and learn from what changed.
Instead of cramming everything into one endless prompt thread, you’ll separate the moving parts: source material, rough drafts, polished copy, editorial rules, reusable skills, and automation instructions. The result is a cleaner workflow where your AI has structure, memory, and a clear path for improvement.
By the end of this tutorial, you'll be able to:
Create the project folder
Build the first editorial rules file
Draft an email and save the screenshot
Convert the draft flow into a skill
Edit the email and update the rules
Let's dive right into it!
