Codex Full Course 2026: The NEW Best AI Coding Tool

A comprehensive walkthrough of Codeex (OpenAI's desktop AI agent app), covering its core features including project organization, plugins, skills, automations, and computer use. The tutorial demonstrates building a full product suite in parallel: an iOS app in Swift, a React landing page, a Figma/Paper design mockup, a Remotion launch video, and an investor deck. Key workflows shown include creating custom skills with external APIs (e.g., YouTube transcript extraction via SuperData), integrating Google Calendar and Gmail plugins, setting up recurring automations, and using Supabase/Postgres for app data. Emphasis is placed on multitasking across multiple agent chats simultaneously to maximize productivity.