When to choose each path
Choose ChatGPT first
Pick ChatGPT when the job is one-off cleanup, exploration, charting, or explaining trends from an uploaded spreadsheet, and the output can be manually reviewed before it leaves the owner.
Choose Gemini or Microsoft 365 Copilot first
Pick the suite assistant when the spreadsheet already lives in Google Workspace or Microsoft 365 and admin-controlled file access, tenant policy, and collaboration matter more than moving data to another workspace.
Choose Quadratic first
Pick Quadratic when analysis needs a shared spreadsheet surface with Python, SQL, formulas, charts, live connections, scheduled tasks, or agent-readable spreadsheet state that teammates can inspect.
Use neither yet
Wait when no one owns the metric definition, the source export is messy, or the analysis would drive finance, pricing, customer, compliance, or hiring decisions without a review process.