I'm on the Ultra plan and use it for chat, antigravity, and some other work automations (similar to your example). The only time I've ever hit my limit is when I use Deep Think (which usually eats up 4-5% of the 6-hour usage limit per response).

Really generous. I'm on the Pro plan and I just use Antigravity for vibe coding w/o automation. It's actually difficult to hit my weekly limit now, it takes about ~30-35 hours of continuous agent work, which virtually only happens when building a new app from scratch.