Dogfood so nutritious it’s building the future of SDLCs

Ryan welcomes Thibault Sottiaux, OpenAI’s engineering lead on Codex, to discuss how the Codex team dogfoods Codex to build Codex, what distinguishes an agentic coding tool from a chat-based code assistant, and why they’re focusing on a safe and secure agentic SDLC rather than just code generation.

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February 24, 2026

Dogfood so nutritious it’s building the future of SDLCs

Ryan welcomes Thibault Sottiaux, OpenAI’s engineering lead on Codex, to discuss how the Codex team dogfoods Codex to build Codex, what distinguishes an agentic coding tool from a chat-based code assistant, and why they’re focusing on a safe and secure agentic SDLC rather than just code generation.

[Image: Article hero image]

Credit: Alexandra Francis

Codex CLI is a coding agent from OpenAI that runs locally on your computer. Try it now with your Free or Go ChatGPT plan. You can keep up with everything happening at OpenAI on their blog.

Connect with Thibault on LinkedIn and Twitter.

Congrats to user kevinyu for winning a Great Question badge for Does println! borrow or own the variable?.

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[Original source](https://stackoverflow.blog/2026/02/24/dogfood-so-nutritious-it-s-building-the-future-of-sdlcs/)