Best AI for Excel formulas
A wrong Excel formula doesn't error — it returns a plausible number, and you find out three meetings later. The right model gets the syntax right, picks the modern function (XLOOKUP over the VLOOKUP everyone defaults to), and explains the logic so you can adapt it. The wrong one gives you a formula that almost works.
Most reliable at correct, copy-paste-ready formula syntax — nested logic, INDEX/MATCH, the dynamic-array functions (FILTER, UNIQUE, LET), and it knows the Google Sheets equivalents when they differ.
Sonnet 4.6 writes the clearer explanation of why a formula works and how to modify it — better when you're learning, not just copying.
In Excel 365: I have a sheet where column B is a salesperson name, column C is a deal amount, and column D is a status ("Won"/"Lost"/"Open"). Give me a formula in cell G2 that sums the deal amounts for "Won" deals belonging to the salesperson named in F2. Then explain it line by line and give the Google Sheets version if it differs.
What to look for in any model
- 1Say which app and version — Excel 365, older Excel, and Google Sheets differ on FILTER, XLOOKUP, and array behavior
- 2Describe your columns by what they contain, not "column A" — the model can't see your sheet
- 3Test on a copy first — a formula that returns a number isn't the same as a formula that returns the right number
- 4For anything beyond a few nested functions, ask whether a pivot table or Power Query is the better tool — sometimes the answer isn't a formula
Run it yourself — free, no card
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