AI Spreadsheet Co-pilot

Excel power users need an AI assistant that understands spreadsheet context and can execute complex multi-step operations safely. Build a Cursor-like interface for spreadsheets with reversible changes, parallel execution, and multi-model provider support. Target: Data analysts, finance teams, and spreadsheet-heavy businesses.

Microsoft Copilot in Excel already exists and ships to any M365 subscriber, which means the incumbent isn't a scrappy startup but a trillion-dollar company with native API access to the file format — that context should be front of mind before committing here. The tailwind is real: post-ChatGPT, finance and ops teams are actively hunting for workflow automation, and the gap Microsoft hasn't closed is trust — reversibility, auditability, and model choice matter to analysts who've had formulas silently corrupted before. The $10k–50k/month band is plausible only through a tight vertical focus, think hedge fund back-offices or FP&A teams at mid-market companies, where willingness to pay for reliability is high enough to justify $200–500/seat pricing rather than competing on volume. The most likely failure mode is distribution: Excel power users sit inside enterprises with locked-down IT policies, lengthy procurement cycles, and an existing Microsoft relationship that makes adding a third-party co-pilot a hard sell regardless of quality.