C
AI coding agents
Codex
OpenAI's coding agent for building and shipping apps.
OpenAI's coding agent for building and shipping apps.
Codex is OpenAI's coding agent, available through ChatGPT, that writes, edits, and ships code from plain-language instructions. You describe what you want built or fixed, and Codex works in a sandboxed environment to generate the code, run it, and report back.
It handles full projects, not just snippets, so it can scaffold a website, wire up a form, or fix a bug across multiple files. Pricing runs roughly $20 a month, with no free tier.
Codex is Justin's pick. On the Episode 001 live he said the entire AI4NTP site, the ads, and the interactive widget were built with Codex. Alec has used it too: in Episode 004 he had Codex pull from the SpyFu API to build a prospect list in about 10 minutes, and in Episode 005 he tested it as one coding-agent path before choosing Lovable for that build.
We keep Codex in the stack because it handles real, multi-file projects inside a tool most operators already have open (ChatGPT), not some separate technical setup. You do not need to know how to code to direct it: you describe the outcome, Codex writes and runs the code, and you review what comes back. Weigh it against Claude Code if you want a second opinion, but for about $20 a month, a tool that shipped an entire live site has earned its spot here.
Codex is built for writing and shipping code, which means what it produces under the hood is technical, and getting a project fully live still involves things like hosting and deployment. You do not have to write that code yourself, though. You describe what you want in plain language, and Codex handles the execution. If you are comfortable directing an assistant and reviewing what it builds, Codex is workable without a programming background. That is how Justin used it to build the AI4NTP site, ads, and widget.
Genuine substitutes for Codex that we've also run on stage:
Paid; ~$20/mo (stated on the live).
Justin Novak used it in Episode 001 for building the AI4NTP site, ads, and live widget; Alec Saluga used it in Episode 004 for building a prospect list via the SpyFu API in about 10 minutes; Alec Saluga used it in Episode 005 for comparing coding-agent options before choosing Lovable; Alec Saluga used it in Session 006 for driving an Apify scraper and enriching prospect data for the cold-email agent.
Codex is built for writing and shipping code, which means what it produces under the hood is technical, and getting a project fully live still involves things like hosting and deployment. You do not have to write that code yourself, though. You describe what you want in plain language, and Codex handles the execution. If you are comfortable directing an assistant and reviewing what it builds, Codex is workable without a programming background. That is how Justin used it to build the AI4NTP site, ads, and widget.
Tools we've also used live that can stand in for Codex: Claude Code.
| Category | AI coding agents |
|---|---|
| Pricing | Paid; ~$20/mo (stated on the live). |
| Free tier | No |
| Used live in | Episode 001 and Episode 004 and Episode 005 and Session 006 |
| Operator(s) | Justin Novak, Alec Saluga |
| Website | chatgpt.com/codex |
On AI4NTP, every tool is shown live by a real operator. These are the people who demoed Codex on stage.
Founder and host of AI4NTP. He sold his first company from his college dorm room, and as a fractional CMO has helped scale multiple businesses past $50M in ARR.
A former B2B salesman with no technical background who self-taught AI. He builds and deploys AI-driven marketing and websites, and has grown a following of over 15,000 teaching AI adoption.
Explore other tools we've demoed live at AI4NTP:
See tools like Codex set up live, step by step, on AI4NTP, or get hands-on help putting it to work.