4 Best AI Plugins & Add-ins for Excel (2026)
The best AI plugins and add-ins for Excel in 2026 come in two kinds: companion apps that analyse the whole file — DataHub Pro (free tier, nothing to install, $19.99 per seat) — and in-grid add-ins that write formulas and fill cells — Microsoft Copilot in Excel (needs Microsoft 365), Ajelix and Arcwise. Install an add-in for formula help; use a companion app for analysis, forecasts and dashboards.
Try it on your own file → · Updated 13 September 2026
DataHub Pro runs 67 analyses on an uploaded spreadsheet in the browser, free and unlimited, with no add-in and no macro.
Upload the actual file and get the actual answer — pivots, forecasts, cohorts, variance and anomaly detection against your own numbers, not a worked example.
Run it on your own spreadsheet →"AI plugin for Excel" can mean two very different things: an in-grid add-in that writes formulas and fills cells, or a companion tool that analyses the whole file. Here's an honest ranking of both — with what each is genuinely best at, and the free options.
Which should you choose?
Choose Excel if the task is genuinely a spreadsheet task and one person owns it. Choose DataHub Pro if your data already lives in spreadsheets, you want the analysis and the branded report done for you on a schedule, and you don't have an analyst to hand.
Excel is the better choice when…
The task is genuinely a spreadsheet task and one person owns it. It is a mature, capable product and there are jobs it does better than we do.Typical cost: included in Microsoft 365.
DataHub Pro is the better choice when…
You work in Excel or CSV, you need dashboards, forecasts and a board-ready report without building a data model, and you want it to arrive automatically each week or month with your own branding on it.$19.99 per seat flat, or $199/year — unlimited users on the workspace.
Where we are not the right fit: we are not a warehouse-scale BI platform. If you need a semantic layer, row-level security across thousands of users, or SQL-native modelling over a data warehouse, pick Excel or a comparable enterprise tool — you will outgrow us and we would rather say so here than after you've paid.
The short version
· Best for whole-file analysis: DataHub Pro — dashboards, forecasts and reports from the file, with an audit trail.
· Best native add-in: Microsoft Copilot in Excel (if you pay for M365 Copilot).
· Best formula add-in: Ajelix — formulas, VBA and templates in one place.
· Best free: DataHub Pro free tier (whole-file analysis); Ajelix’s limited free tier (formulas).
Two kinds of "AI plugin" — pick the right one
Most "AI plugins for Excel" are formula assistants: you describe what you want in plain English and they write the formula, regex or script, or fill a column with AI. Brilliant for the cell-level grunt work. But they don't analyse your data — they don't build a dashboard, forecast a trend, or segment your customers. For that you want a companion analytics tool that reads the whole file. The list below covers both, clearly labelled. No affiliate links; pricing taken from each vendor in June 2026.
| Tool | Type | Best for | Free tier | From |
|---|---|---|---|---|
| DataHub Pro | Companion app | Whole-file analysis & reports | Yes | $19.99/seat |
| Copilot in Excel | Native add-in | In-grid AI on M365 | No | ~$30/user/mo |
| Ajelix | Add-in/web | Formulas, templates, VBA | Limited | $9/mo |
| Arcwise | Add-in | AI in Google Sheets/Excel | Limited | Paid |
1. DataHub Pro — companion app
From $19.99/seat · free tierNot a formula add-in — a full analytics layer for the file you already have. Upload an Excel/CSV and get KPI dashboards, Holt-Winters forecasts, cohort/RFM analysis, anomaly detection and plain-English Q&A, then export a branded Word/PowerPoint report. Every answer ships with the pandas operations it ran, so the numbers are auditable.
2. Microsoft Copilot in Excel — native add-in
~$30/user/moThe built-in AI, available with a Microsoft 365 Copilot subscription. Summarises ranges, suggests formulas and answers questions about the sheet you're in.
3. Ajelix — add-in / web
From $9/moA popular Excel/Sheets AI toolkit: formula generator and explainer, template generator, VBA scripts and translation. Strong, affordable formula helper.
4. Arcwise — add-in
PaidAn AI copilot for spreadsheets with data connectors and context-aware help. More analyst-oriented than a pure formula bot.
Which should you install?
If you just want help writing formulas, Ajelix is the one to start with, and Copilot is worth it if you already pay for M365. But if what you actually need is to turn the spreadsheet into a dashboard, forecast or board report — the work a formula plugin can't do — use DataHub Pro alongside Excel. Many teams run both: a formula add-in for cell work, and DataHub Pro for the analysis and reporting.
Go beyond formulas
Upload your spreadsheet and get an auditable dashboard, forecast, and report in about two minutes — free to try.
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