AppStories AppStories

Inside OpenAI’s Codex With Andrew Ambrosino

Aug 31, 2026 · 45m

Summary

Andrew Amrosino from OpenAI joins App Stories to discuss the evolution of Codex into a unified ChatGPT desktop app. He explains the shift from terminal-based agents to a GUI-first approach, emphasizing trust mechanisms for computer use and the company's bottom-up innovation culture. Amrosino also addresses the technical trade-offs of using web technologies for cross-platform consistency while promising deeper macOS integrations.

Topics discussed

Introduction and guest Andrew Amrosino from OpenAI History of Codex: From CLI agent to standalone app Designing the Codex app interface and user experience Why not build an IDE? The middle-ground approach Fluid surfaces and the evolution of coding agents Integration of Computer Use and Computer History Sponsor segment: Finalist 4 planner app Building trust with agents: Cursors and transparency Native Mac app vs. Web technologies debate The 'Super App' concept: Unifying Chat, Work, and Codex OpenAI's internal culture: Everyone builds everything Product leadership, taste, and avoiding feature slop Testing, metrics, and agent-first experiences Future of Codex: Local files and ecosystem integration
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