Xcode 26.1 ChatGPT very slow

Developer Tools & Services Xcode Xcode

Created Nov ’25

Replies 19

Boosts 12

Participants 18

ChatGPT in Xcode 26.1 is super slow for me. What used to complete in a batter f seconds is now taking tens of minutes.

Context: M2 Pro MBP, Xcode 26.1, macOS 26.1. CPU stays under 50% while ChatGPT returns. Using the minimal setting. Tried restarting, have verified I have nothing running Electron, no other apps are running.

ChatGPT returns fast for the displayed content but the preview window where it renders code per line takes a few seconds per line.

Answered by Developer Tools Engineer in 865233022

Thank you for reporting this! We've identified that some users interacting with ChatGPT might experience performance issues when the assistant is applying code changes. A temporary workaround is to switch to another navigator (like the Project Navigator), while a response is being generated in the coding assistant.

For more information, see: https://developer.apple.com/documentation/xcode-release-notes/xcode-26_1-release-notes#Coding-Intelligence

Boost

Developer Tools Engineer OP

Apple

Nov ’25

Ajaxharg OP

Nov ’25

Switching to another navigator makes no difference for me.

Tewha7 OP

Nov ’25

Agreed. Switching to a different navigator seems to speed up the coding assistant exactly as much as a pot's boiling is sped by not watching it.

Product Manager OP

Apple

Nov ’25

This issue has been fixed in Xcode 26.1.1.