Excel is powerful, but complex models can become difficult to question, explain, and keep aligned. Drift brings an AI analysis layer directly into Excel, turning spreadsheets from static models into interactive sources of insight. It can examine large workbooks, cross-check numbers against PDFs and other business documents, investigate assumptions, run scenarios, retrieve external data, and write analysis back into the spreadsheet. With persistent context and role-aware analysis, Drift is designed to help analysts, investors, managers, and decision-makers explore financial models without leaving the environment where the work already happens.