The old ChatGPT is now ChatGPT Classic. Codex is now ChatGPT.
There is a funny interaction in the Microsoft store, where ChatGPT turns into Codex when you click on it: https://f003.backblazeb2.com/file/sharexxx/ShareX/2026/07/Ap...
(Also GG @ MSFT for opening a nag about Windows Hello twice while I wanted to stop the recording.)
The best of Microsoft's naming schemes, now coming to your LLM chatbot.
I had a similar effect on macOS.