They don't exactly put it front and center. Click "usage limits" (at the bottom; https://support.claude.com/en/articles/9797557-usage-limit-b...) then "Max plan" in the first list (https://support.claude.com/en/articles/11014257-about-claude...). There is a $200/mo price which people are likely referring to with "20x more usage per session" (which kinda bothers me because I'd bet my bottom dollar it's 20x "as much" but that's a lost cause).