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

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"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.

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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.

ToolTypeBest forFree tierFrom
DataHub ProCompanion appWhole-file analysis & reportsYes$19.99/seat
Copilot in ExcelNative add-inIn-grid AI on M365No~$30/user/mo
AjelixAdd-in/webFormulas, templates, VBALimited$9/mo
ArcwiseAdd-inAI in Google Sheets/ExcelLimitedPaid

2. Microsoft Copilot in Excel — native add-in

~$30/user/mo

The built-in AI, available with a Microsoft 365 Copilot subscription. Summarises ranges, suggests formulas and answers questions about the sheet you're in.

ProsNative to Excel; no third-party add-in; good general assistant.
ConsRequires a paid Copilot add-on; limited deep analysis/forecasting.

3. Ajelix — add-in / web

From $9/mo

A popular Excel/Sheets AI toolkit: formula generator and explainer, template generator, VBA scripts and translation. Strong, affordable formula helper.

ProsBroad formula/VBA toolset; cheap; works with Excel and Sheets.
ConsCell/formula-level, not whole-file analytics; free tier is limited.

4. Arcwise — add-in

Paid

An AI copilot for spreadsheets with data connectors and context-aware help. More analyst-oriented than a pure formula bot.

ProsContext-aware AI; data connectors; analyst-friendly.
ConsPrimarily Google Sheets-first; paid.

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.

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Frequently asked questions

What are the best AI plugins for Excel?
For in-grid help: Microsoft Copilot and Ajelix. For analysing a whole file (dashboards, forecasting, segmentation), a companion tool like DataHub Pro goes further than a formula plugin.
Is there a free AI plugin for Excel?
Yes — Ajelix has a limited free tier for formulas, and DataHub Pro has a free-forever tier for full-file analysis.
Can an AI plugin analyse my whole spreadsheet?
Most add-ins work cell-by-cell. To analyse the whole file — and see how each number was calculated — use a tool like DataHub Pro that reads the entire dataset and returns an audit trail.

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