Does anyone have any recommendations for something like Cursor but more open? Cursor's harness is so much faster than anything else I've used that I just can't give it up, using Claude Code feels like being on 0.25x speed. Also I do like the IDE-style UI, being able to highlight code in a file editor and then quickly add that to my chat (Cmd-L) is really nice and much more difficult in CLI based harnesses.

Right now I think GPT 5.6 Luna is by far the most cost effective model, so this change is effectively kicking me off of Cursor.