OpenAI Open Sources Codex: The CLI Coding Agent

About this video

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