When using Auto for models and you get GPT-5 models including Codex it’s obvious straightaway because the agents behaviour is so different … and problematic IMHO.
GPT-5:
- doesn’t show as much thinking or activity in the composer
- has long pauses of inactivity
- it’s difficult to tell if it’s working or frozen.
- doesn’t use Plan Mode in the same level of detail as other models
- if you prompt it to add more detail it really struggles
- doesn’t follow conventions like rules
- over engineers features
Does anyone else have this experience with GPT-5 in Cursor?
I absolutely hate it when I see the interaction style of GPT-5 come up because I know it’s going to deliver something whack that I’ll have to undo with a better behaved agent.
What do you do to solve GPT-5’s behaviour?