Your plan sets how many active jobs you can run, how many video recordings and AI credits you get each month, and how many team seats you have. A seat is any teammate you invite, in any role.
Your plan also decides which capabilities are switched on, such as AI interview summaries, CV parsing, bulk CV import, the activity log, and AI candidate matching. Where an article says "if your plan includes it", this is what it means. The Billing page is the source of truth for your exact limits and which capabilities are active.