MechanismArticle
The toggle between Codex and ChatGPT Work changes the surrounding experience but not the underlying capability of the product.
Ambrosino explains that switching between the code-intensive Codex mode and the less-technical ChatGPT Work mode alters the interface and experience, not what the underlying system can actually do. ✦ AI generated
Andrew Ambrosino · Big Technology · 2026-07-10 · original ↗
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“Why not have the product itself determine your intent and guide you through the appropriate experience?”
There’s a toggle between the more code-intensive version of the app, which is OpenAI’s Codex product, and its less-technical version, ChatGPT Work. Code is foundational to both experiences, Ambrosino told me, but the Codex version is more useful for digging into the code itself. “The toggle does not affect what this product can do,” he said.
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supports → The naming of AI agent modes across ChatGPT and Claude is confusing and inconsistent, with Work, Codex, Cowork, and Code not mapping cleanly between platforms.Ethan Mollick · Simon Willison's Weblogsupports → The difference between ChatGPT Work on mobile versus the desktop app is spectacularly unintuitive — mobile Work mode simply grants the Code Interpreter unrestricted internet access rather than providing agentic capabilities.Author · Simon Willison's Weblogexplains mechanism → The difference between ChatGPT Work on mobile versus on desktop is spectacularly unintuitive — on mobile, switching from Chat to Work mode gives the Code Interpreter unrestricted internet access, while on desktop the same mode is effectively a skin on top of Codex.Author · Simon Willison's Weblog