I found a bug in Cursor:
In the Agent window, the model selector cannot distinguish between thinking and non-thinking models — both “Opus 4.6 Max” entries look identical with no visual indicator.
However, in the Edit (Composer) window, the thinking model is properly marked with a brain icon (
), making it easy to tell them apart.
This inconsistency makes it impossible to know which variant you’re selecting in the Agent window.
Attaching screenshots for reference. Hope this gets fixed!