Why We Switched From Claude Code to Codex

In January, Dan Shipper wrote that whoever wins vibe coding wins how you work on your computer—and OpenAI had some serious catching up to do. Three months and the release of GPT-5.5 later, Codex has more than caught up. Austin Tedesco, Every's head of growth, now spends about 80 percent of his working time inside the Codex desktop app, doing everything from drafting go-to-market plans from a stack of meeting transcripts to rebuilding the company's KPI dashboard. On this episode of AI & I, Dan sat down with Austin to discuss why the agent management interface—a desktop app built on top of a coding agent—is becoming the new operating system for knowledge work, and why Codex has become his daily driver. If you found this episode interesting, please like, subscribe, comment, and share! To hear more from Dan Shipper: Subscribe to Every: every.to/subscribe Follow him on X: twitter.com/danshipper Join the membership for Where You Live at joinbilt.com/dan Timestamps for YouTube: 00:00:00 Introduction 00:00:57 How Codex went from a tool for senior engineers to a daily driver for knowledge work 00:02:42 How Claude Code proved that a great coding agent works for any knowledge work 00:07:24 Austin's switch to Codex 00:13:48 How Austin set up Codex with folders, keys, and reviewer agents 00:18:24 Using Codex to brainstorm automations across Gmail, Slack, and Notion 00:22:42 How Austin manages the human review step when Codex is drafting communications 00:28:54 Using Codex to build specialized agents inspired by product executive Claire Vo 00:31:09 Synthesizing meeting transcripts and Slack threads into a go-to-market plan 00:40:15 Building a live KPI tracker in Notion that agents can read 00:44:54 Using Codex for recruiting Links to resources mentioned in the episode: Austin on X: @tedescau Dan's January essay on OpenAI's catch-up problem: every.to/chain-of-thought/openai-has-some-catching-up-to-do Every's vibe check on GPT-5.5: every.to/vibe-check/gpt-5-5