I want to add some important findings from Google’s own official documentation that directly contradict the idea of a “shared quota pool” for Family Group members.
1. Official Google One AI page ( Google AI Plans with Cloud Storage - Google One ) states:
“Family plan members on a Google AI Pro plan can enjoy AI benefits and features at no extra cost.”
The word used is “enjoy” — as in each member individually enjoys the benefits. Not “share a limited pool among yourselves.”
2. The plan descriptions for Antigravity specifically say:
- Google AI Pro: “Higher rate limits to agent model in Google Antigravity”
- Google AI Ultra: “Highest rate limits to agent model in Google Antigravity”
These are described as tier-based rate limits per subscription level — not as a single shared bucket split across family members.
3. Footnote 9 on the same official page explicitly defines what IS shared:
“AI credits (daily and monthly) are shared across Flow and Whisk.”
This footnote specifically calls out Flow and Whisk as having shared credits. If Family Group members were also supposed to share a quota pool, this would absolutely be stated here. The absence of any such note is itself evidence that per-member independent quotas were the intended design.
4. Google’s own Help documentation consistently states:
“Each family member uses their own Google account, and individual usage remains private and separate.”
Storage is explicitly described as a “shared pool.” AI usage limits are consistently described as “individual” and “per-user.”
So to summarize: Google’s own official product page, footnotes, and help documentation all point to Family Group members having independent AI quotas. There is zero documentation anywhere stating that Antigravity or AI Studio quotas are shared across family members.
Yet today, they are shared. With no announcement, no changelog update, and no footnote revision.
This is not a gray area. This directly contradicts Google’s own published materials.