OpenAI's Codex: This Model Is So Fast It Changes How You Code

About this episode

Dan Shipper interviews Thibault Sottiaux and Andrew Ambrosino about OpenAI's Codex and its impact on coding.

OpenAI’s hottest app isn’t ChatGPT—it’s Codex. In the last few weeks alone, the Codex team shipped a desktop app, GPT-5.3 Codex (a new flagship model), and Spark, the fastest coding model I’ve ever used. Usage has grown fivefold since January, and over a million people now use Codex weekly. Codex was also the app that OpenAI chose to run an ad for in the Super Bowl. Dan Shipper talked to Thibault Sottiaux, head of Codex, and Andrew Ambrosino, a member of technical staff who built the Codex app, for Every’s AI & I about what OpenAI is building and how they’re using it internally. If you found this episode interesting, please like, subscribe, comment, and share! Want even more? Sign up for Every to unlock our ultimate guide to prompting ChatGPT here: https://every.ck.page/ultimate-guide-to-prompting-chatgpt . It’s usually only for paying subscribers, but you can get it here for free. To hear more from Dan Shipper: Subscribe to Every: https://every.to/subscribe Follow him on X: https://twitter.com/danshipper Head to granola.ai/every and get 3 months free with the code EVERY. Timestamps: 00:00:00 - Start 00:01:27 - Introduction 00:05:27 - OpenAI's evolving bet on its coding agent…

People in this episode

Host: Dan Shipper

Guests: Thibault Sottiaux, Andrew Ambrosino

Topics covered

• OpenAI
• Codex
• AI development
• coding tools
• technology trends
• software engineering

Keywords

• OpenAI
• Codex
• GPT-5.3
• Spark
• AI workflows
• coding model
• software development

Sponsors

Every, granola.ai

Mentioned in this episode

Organizations: OpenAI, Every, granola.ai

Products: Codex, GPT-5.3 Codex, Spark

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