I'm using it in antigravity, and fint it quite good. I have not managed to run out of usage on Flash. You can run Pro out of quota almost instantly, they really don't want you to use it if you're not paying $200 a month.
I do not use super broad prompts, though. None of this "build me a webapp" stuff. It's more like, "adjust this part of this class to do Y instead of X."
Also bonus: using it in Antigravity you can burn through all the Opus credit Google give you first to do all the planning and then switch it to Gemini 3.1 Pro to do the grunt work.