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Mica is an Excel AI tool that does the work in your workbook. Free download, pay per use.
Mica is an Excel AI tool and workbook agent that completes the task inside your open file instead of handing you a formula to paste elsewhere. In your own spreadsheet, Mica changes cells, formulas and structure directly and shows every step as it happens, so you can stop it mid-task. Free to download, Mica gives new users a trial battery allowance, then charges per battery - $18 for one, $80 for five - with no subscription or monthly minimum. On Windows, Mica runs alongside Excel desktop, Excel 2007 through Microsoft 365.

AI office agent that completes tasks and creates editable office files
Lingxi is a desktop AI office agent developed by Kingsoft Office. Users describe a task in natural language, and Lingxi plans and carries out the work by using tools and interacting with office applications, producing editable Word documents, Excel spreadsheets, and PowerPoint presentations. It can work across connected environments such as WPS, browsers, local files, and enterprise messaging, and can retain project context and work preferences to support future tasks.