Science & Technology

Codex Full Course 2026: The NEW Best AI Coding Tool

📚 Main topics

Codex basics and organizationThe course introduces Codex as a desktop AI agent that can search the web, work with files, and use computer controls. Projects keep chats and generated files organized, and the app supports different models, permissions, and effort levels. 2:36
Plugins, skills, and automationsPlugins connect Codex to services such as Google Calendar, Gmail, and Figma, while skills package repeatable workflows. The tutorial demonstrates building custom skills with APIs and scheduling automations for recurring work. 14:28
Design and app-building workflowsThe second half follows the creation of the Chorus app, from initial mobile designs to a Swift iOS app, a web landing page, and a Supabase-backed database. It also covers generating a motion-graphics launch video and an investor deck. 35:39
Multitasking across agents and toolsThe creator runs multiple tasks in parallel, steering active chats with new instructions and using Claude Code for design work he finds Codex handles less effectively. 25:18

✨ Key takeaways

Give agents a clear workspaceProjects tie chats to folders where generated files are stored, making it easier to find, reference, and update work. 4:42
Use integrations to extend capabilitiesWhen Codex does not have a ready-made integration, the tutorial suggests finding an API or MCP and asking the agent to create a reusable skill. 27:51
Multitask by handing off focused tasksSend a clear prompt, let the agent work, then move to another task rather than waiting idly for every job to finish. 36:10
Review and refine generated workThe examples show that AI-created designs, video scenes, and decks may need multiple rounds of feedback, and sometimes another tool is a better fit for a particular task. 1:08:02

🧠 Lessons learned

Ask the agent when you are unsureThe creator uses Codex to investigate choices such as databases, integrations, and setup steps, then proceeds based on its recommendations. 52:50
Test the actual resultThe tutorial checks the app in an iOS simulator and on a phone, verifies the web waitlist submission, and inspects database contents before treating tasks as complete. 1:22:10
Keep sensitive credentials privateAPI keys are entered off camera, and the tutorial emphasizes not exposing them while configuring integrations. 29:56
Use visual feedback to guide revisionsScreenshots, sketches, precise video timestamps, and coordinate guides help communicate specific changes to agents. 1:05:23

🏁 Conclusion/next steps

Build and automate iterativelyThe creator finishes with a working app, a deployed waitlist page, an investor deck, a launch-video draft, and scheduled automations, while noting that each can be improved further. 1:41:24
Look for repeatable work to automateThe closing advice is to identify recurring tasks in your job or business and experiment with Codex, skills, plugins, and other connected tools to streamline them. 1:41:54

Transcript excerpt

0:00 Welcome to the Open AI Codex complete guide, where we will be learning how to use Open AI's new super app to create and edit designs, do research and create documents, create and deploy full web apps, create motion graphic launch videos, create high-quality investor decks that you can export to Canva, and even create high-quality iOS apps in Swift. What you'll realize in this video is Codex is the only unified all-purpose

0:32 AI agent tool. One that combines coding, co-work, browser, and computer use cases all into one single interface that we are going to cover in great detail. So, this video is going to be divided into two parts. We're going to first start with the basics, and then we are going to move on to multitasking and creating many different things in parallel. In part one, we're going to talk about the basics of prompting. We're going to talk about permissions, the different AI models you can use, and the effort.

🔒 The full, searchable transcript is available with Pro.

Suggestions