Tootfinder

Google is testing AI overviews in the main Google Search results with some users, even if they do not opt in to the Search Generative Experience labs feature (Barry Schwartz/Search Engine Land)
https://searchengineland.com/google-st

Google starts testing AI overviews from SGE in main Google search interface
Some users who do not opt in to the Google Search labs SGE feature may see AI overview answers in the search results.