Open a file and click Ask AI (or press Ctrl+J). Ask questions about the file — answers quote the pages they come from; click a citation to jump there. Quick actions summarise, extract key points, translate or draft an e-mail about the file. New → Document / Spreadsheet with AI writes a first draft from your prompt and opens it in the editor. Switch the search to Meaning to find files by what they say, not just their names (index your files once from Settings → AI & privacy).
Every request uses AI credits from your plan (1 credit ≈ 1 000 tokens of text). The panel shows how many you have left this month; when they are used up the assistant pauses until the next period or an upgrade. You can turn the assistant off for your account in Settings → AI & privacy, where you also see which provider answers your questions. Your files are never used to train models, and nothing is sent for files opened through shared links.