AI coding agents

Codex

OpenAI's coding agent for building and shipping apps.

Visit Codex →

Codex: OpenAI's coding agent for building and shipping apps. Demoed live on AI4NTP in Episode 001.

CategoryAI coding agents
PricingPaid; ~$20/mo (stated on the live).
Free tierNo
Used live inEpisode 001
Operator(s)Justin Novak
Websitechatgpt.com/codex

Seen live at AI4NTP

Episode 001 · Justin Novak
Built the AI4NTP site, ads, and live widget.
Watch the recap →YouTube replay →

What is Codex?

OpenAI's coding agent for building and shipping apps.

How and why we use Codex at AI4NTP

Justin's pick. On the Episode 001 live he said the entire AI4NTP site, the ads, and the interactive widget were built with Codex.

Codex alternatives we've used live

Genuine substitutes for Codex that we've also run on stage:

Tools we used alongside Codex

Other tools from Episode 001 in the directory:

Codex FAQ

How much does Codex cost?

Paid; ~$20/mo (stated on the live).

What did AI4NTP use Codex for?

Justin Novak used it in Episode 001 to built the AI4NTP site, ads, and live widget.

What are some Codex alternatives?

Tools we've also used live that can stand in for Codex: Claude Code.

Want to get more out of Codex?

See tools like Codex set up live, step by step, on AI4NTP, or get hands-on help putting it to work.

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Last updated 2026-06-05