Hover over a video to see an AI summary and save time before opening it. Tired of clicking into YouTube videos that turn out to be a waste of time? YouTube 600x shows you an AI-generated summary the instant you hover over any video thumbnail — so you can decide to watch, save, or skip in seconds, without ever pressing play. The problem it solves: you click a video hoping it delivers, then bail two minutes in. YouTube 600x replaces click-and-hope browsing with a quick, informed glance.