Free course, straight in. Looking for a Codex free course? This is a full, free one-hour beginner course on ChatGPT Codex — powered by the new GPT 5.6 Sol model — that shows you how to build and automate almost anything.
Websites, scheduled agents, emails, slide decks, videos and apps, all from one tool. Watch the full course below, and here’s what you’ll learn.
Last updated: July 2026.
Key takeaways
- A free one-hour ChatGPT Codex course — the full course is the video above.
- Codex (with GPT 5.6 Sol) builds websites, automations, scheduled agents, emails, slides and videos.
- You’ll learn plan mode, computer use, agent loops, parallel projects and token management.
- For the full Codex masterclass and my Agent OS, join the AI Profit Boardroom.
What the Free Codex Course Covers
It’s a genuine hour of hands-on training. You’ll learn:
- Installing Codex and building locally vs in the cloud
- Plan mode vs action mode — and why planning first gives better outputs
- Managing tokens and usage (frontier models are powerful but expensive to run)
- Connecting plugins — Gmail, presentations and computer use
- Building a real website (a productised SEO-agency store) from brand assets
- Scheduled agents and Gmail ‘loops’ that draft your emails before you wake up
- Creating animated promo videos with the open-source ReMotion skill
- Building an Agent OS dashboard, switching models (GPT 5.6 Sol, OmniRoute, HY3), and an Obsidian second brain
How to Get Started With Codex
Getting going is simple: download Codex from the ChatGPT/OpenAI site and log in — the app changed recently with GPT 5.6 Sol. From there you pick a project folder, choose local or cloud, and start building.
One thing the course is honest about: GPT 5.6 Sol is powerful but token usage adds up, so it also covers keeping costs down — including routing to free APIs. See my free Codex setup guide for that side.
Why Plan Mode Matters
One thing the course drills in: plan before you build. Research (from Kilo Code) found that planning first produces better outputs, because the decisions are made up front instead of the agent going off track mid-build. So you use plan mode to map the project, then switch to action mode to build it.
For anything non-trivial, that two-step — plan, then build — is the difference between a clean result and a mess.
Keeping Codex Costs Down
GPT 5.6 Sol is powerful, but frontier models are expensive to run, so token usage is the real constraint. The course covers staying efficient — including routing Codex through free providers like OmniRoute (with HY3 as a fallback) so you can build far more before anything caps out.
Pair that with the token-minimizer tools in my RTK vs Caveman guide and you can run Codex hard without the bill.
What You’ll Be Able to Build
By the end you can build and automate real, sellable work — not just toy demos:
| Build this | In the course |
|---|---|
| Websites & apps | A productised SEO store; a gamified habit-tracker app |
| Automations | Daily Gmail drafts, scheduled tasks, agent loops |
| Content | Slide decks emailed automatically; animated promo videos |
| Systems | An Agent OS dashboard tying every agent together |
Plenty of people sell exactly these automations to clients — the course points that out too.
Go Deeper: The Codex Masterclass + Agent OS
The full one-hour course above is free. When you want the deeper version — the full Codex masterclass, all the systems and my Agent OS ready to install — that’s inside the AI Profit Boardroom. New to this? Start free with my AI course and community (plus 1,000+ AI agents), or grab a free strategy session.
It pairs with my multi-agent orchestration guide and my agentic OS download guide.
FAQ
Is this Codex course really free?
Yes — the full one-hour course is the free video above. For the deeper masterclass and my Agent OS, there’s the AI Profit Boardroom.
What model does Codex use?
The course focuses on GPT 5.6 Sol, OpenAI’s frontier model — powerful for building and automating, though token usage is worth managing.
What can you build with Codex?
Websites, apps, automations, scheduled agents, emails, slide decks and animated videos — often in a single prompt.
Is Codex free to use?
Codex runs on your OpenAI usage, which is metered. The course also shows how to route it through free providers to cut costs — see my free Codex setup guide.
Do I need coding experience?
No — the app is built to be non-technical. You describe what you want, use plan mode, and Codex builds it, previewing locally as it goes.
The Bottom Line
Use this Codex free course to build automations with GPT 5.6 Sol in an hour. Free to watch; the full masterclass and Agent OS live in the AI Profit Boardroom.