My 1 month subscription of Gemini Ultra is finished in three days and I revert to their $20/month plan. Assuming that daily and weekly quotas are OK for casual use, I will probably use AntiGravity CLI most of the time.
Off topic, but maybe interesting: during my one month test of Gemini Ultra I did several tasks in parallel to compare (old) Antigravity+Claude Opus vs. OpenCode with a fast provider for deepseek-v4-pro, kimi-k2p6, and minimax-m2p7. In almost all cases I could get stuff done in about 60% to 70% of the time using Antivravity+Claude Opus -- but!, OpenCode with the open models is so much cheaper. I get that in a work environment when someone else is paying for tokens, why not burn someone else's money. Paradoxically, I felt more relaxed after the tests with OpenCode with the open models even though I was actively doing more work myself.
EDIT: two months ago I wrote my own small coding agent in Emacs Lisp that I enjoy using. I am researching redoing my Emacs project using the new Antigravity SDK.