ModelMonkey is an AI-powered add-on for Google Sheets and Excel that uses Anthropic’s Claude Sonnet 4.5 to automate financial modeling, formula generation, and spreadsheet analysis directly in your workbook; with natural-language prompts it builds 3-statement models, DCFs, cap tables, pulls SEC/web and warehouse data, creates charts, debugs formulas, and applies your firm’s modeling conventions. The AI autonomously executes multi-step workflows, writes dynamic, auditable formulas into cells, explains every change and formula, and provides one-click undo so analysts and finance teams can trust and review edits instead of copying and pasting between tools. It’s designed for financial analysts, CFOs, founders and data teams who want to speed up repetitive modeling tasks while retaining enterprise-grade security (TLS 1.3/AES-256) and zero data retention.