OpenAI Open Sources Codex: The CLI Coding Agent

Exploring Codex: AI Coding in Terminal

In this video, I explore Codex, a new lightweight CLI tool for AI coding that runs in the terminal. This tool, possibly a response to Anthropic's CLI, allows users to edit and create new code within their repositories. Originally released in 2021 by OpenAI, Codex translates natural language into code using models like O3 and O4 Mini. I provide a demo on how to install and use Codex, create new applications, and make edits using different modes and configurations. I compare Codex's performance with tools like Windsurf, Cursor, and Claude Code, and discuss its potential and limitations in AI-assisted coding. Check out the repo, try Codex yourself, and share your thoughts on this tool versus others. Don't forget to comment, share, and subscribe!

Repo: https://github.com/openai/codex

00:00 Introduction to Codex
01:16 Installing and Setting Up Codex
02:10 Demonstrating Codex Features
03:19 Advanced Configurations and Usage
05:06 Real-World Application and Performance
06:57 Final Thoughts and Comparisons
09:26 Conclusion and Call to Action