Why are there only custom instructions for CODEX possible in the new desktop app? Not for chats ?!
This story is from 2026-09-16. It is preserved in the archive; the latest stories are on the live feed.
I want to add custom instructions to my chatgpt desktop app. But when I go to settings -> personalisation, it only show the possibility to add custom instructions for codex, but not for chats. Where in the desktop app do we enter custom instructions for chat in the desktop app ? Is the new desktop…
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- 2026-09-16 00:50 · r/ChatGPT
Why are there only custom instructions for CODEX possible in the new desktop app? Not for chats ?!