How To Install & Setup OpenAI Codex for Beginners (Step-By-Step Guide)
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Summary ⤵️
OpenAI just launched the new Codex app, and in this video I show you exactly how to install it, set it up, and start using it to build AI agents that act like real AI employees. We also walk through the interface, models, permissions, and why Codex is a serious competitor to tools like Claude Code and Gemini’s terminal tools.
In this video, I break down the new Codex desktop app and show what actually changed, how to install it on Mac, how to log in with ChatGPT, and how it holds up in real tests for coding, agent workflows, and AI-powered automation.
What you’ll learn ⤵️
✅ How to download and install the Codex app from chatgpt.com/codex
✅ How to log in with ChatGPT vs using an API key (and which one you should use)
✅ How projects work in Codex and how to create your first workspace for agents
✅ How Codex models, reasoning effort, and permissions actually work in practice
✅ How to use Codex to create and modify files, run commands, and preview changes like a real AI dev environment
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Why watch?
If this is your first video, I’m Kyle Herbel. A few years ago I was a complete beginner learning AI from scratch and testing everything the hard way. Once it clicked, I started building real automations and systems, not just prompts, and turned that into an agency that’s now done over $500,000 in total revenue.
Now I’m building AI Department with one mission: to help regular people learn practical AI skills that translate into leverage, income, and real-world results.
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