John Gruber with another blog post on native Mac apps:

What keeps me using ChatGPT and keeps me away from using Claude is not that ChatGPT happens to be written using native APIs like AppKit. It’s that it looks and feels like a Mac app — you know, with a Settings window that is … a window.

🙂

On the Codex side, unfortunately the app is at least partly Electron. OpenAI has hired great Mac and iOS developers, though, and Codex has some of the best Mac integration I’ve ever seen — the Computer Use feature especially, which uses Apple accessibility APIs. ChatGPT iOS also has a lot of SwiftUI.