Codex keeps your projects and conversation history in the left sidebar, while the main workspace shows your current thread and the chat where you collaborate with Codex.

You can create a standalone thread, but most of the time you’ll want to work inside a project. A project is connected to a folder on your computer:

Tip: To keep things simple, create a folder on your computer named Codex. Inside that Codex folder, you can have a separate folder for each project.