AI productivity tools take routine knowledge work off your plate: drafting and polishing text, summarizing documents and meetings, answering questions from your own files, and automating tasks across apps. Most of them live inside software teams already use, so the best pick usually depends on your existing stack, such as Microsoft 365, Google, Notion or a CRM. Compare which AI features sit behind higher tiers, how usage limits work, and how each vendor handles company data before rolling a tool out to a whole team.