My experience with Antigravity is the opposite. It's the first time in over 10 years that an IDE has managed to take me out a bit out of the jetbrain suite. I did not think that was something possible as I am a hardcore jetbrain user/lover.
I disagree. At least in my brief test drive, when used with Claude, the performance was on par with Cursor except that the Agent could actually interact with the terminal properly (Cursor is comically bad at this for some reason).
When the (generous!) Claude credits dry up functionality stops however. Gemini is as useless in Antigravity as everywhere else.
The models feel terrible, somehow, like they're being fed terrible system prompts.
Plus the damn thing kept crashing and asking me to "restart it". What?!
At least Kiro does what it says on the tin.