YouTube is testing "Ask YouTube," a conversational search experience that returns AI-generated text summaries alongside cited videos and supports follow-up questions in a persistent thread. The feature is available to Premium subscribers in the US who are 18 or older, searching in English on desktop, and runs until June 8. Users can ask complex questions, receive results that combine video and text, and ask follow-ups to explore further. The experiment is being tested by the company and will end by June 8 unless it is extended.