# AI in PlexiiOffice

> Where AI lives in each PlexiiOffice app: draft and rewrite documents, write formulas and fill sheets, build slides and diagrams, and ask about your work.

Source: https://plexiidesk.com/help/office-ai-actions
Section: Office > Office basics
Plans: All plans
Updated: 2026-10-15

Each PlexiiOffice app has AI built into its editor, aimed at the job that app does. In a document it drafts and rewrites text. In a spreadsheet it writes formulas and fills in rows. In a deck it builds slides, and in a diagram it lays out a flowchart from a description.

Whatever the app, AI shows you what it will do before it changes your file. Nothing is written until you click **Insert**, **Apply** or the app's equivalent.

## Before you start

- **Plans.** The AI in PlexiiOffice is on every plan.
- **AI needs to be set up:** PlexiDesk credits while you are signed in, or your own Anthropic key. See [AI credits and where your AI runs](https://plexiidesk.com/help/ai-credits) and [AI settings](https://plexiidesk.com/help/settings-ai).
- **A few extras use other keys.** Generating pictures in PlexiDesign uses an OpenAI key. See [Add your own API keys](https://plexiidesk.com/help/api-keys).

## AI in each app

| Where | What it does | Learn more |
| --- | --- | --- |
| **PlexiDocs**: **Ask AI** in the toolbar | Drafts new text at your cursor from a description, with a preview first. | [Draft and rewrite with AI in PlexiiDocs](https://plexiidesk.com/help/docs-ai-writing) |
| **PlexiDocs**: select text, then **AI** | Rewrites the selection: improve it, make it shorter, fix the grammar, make it more formal, or turn it into a list or a table. | [Draft and rewrite with AI in PlexiiDocs](https://plexiidesk.com/help/docs-ai-writing) |
| **PlexiSheets**: **AI** beside the formula bar | Writes a formula for the cell you are on from a description of the calculation. | [Describe a calculation, get a formula](https://plexiidesk.com/help/sheets-ai-formula) |
| **PlexiSheets**: **AI fill** | Suggests columns for the data you describe, then fills in the rows. | [Build a sheet with AI fill](https://plexiidesk.com/help/sheets-ai-fill) |
| **PlexiSheets**: **Assistant** | Summarises your figures in a few insights and answers questions about them. | [Insights and questions about your sheet](https://plexiidesk.com/help/sheets-assistant-insights) |
| **PlexiSlides**: **AI** in the toolbar | Generates a deck from a description, or redesigns your slides. | [AI in PlexiiSlides](https://plexiidesk.com/help/slides-ai) |
| **PlexiDiagrams**: **AI map** | Lays out a diagram from a description. | [Start a diagram from a template or AI](https://plexiidesk.com/help/diagrams-templates-and-ai) |
| **PlexiDesign**: **Generate with AI** | Writes copy and lays out a design from a description, with variations to choose from. | [Generate designs and copy with AI](https://plexiidesk.com/help/design-ai-design) |

## Start a whole file with AI

The Documents page writes a first draft of a document, spreadsheet, deck or flowchart from a description. Choose what you are making, describe it, and click **Create with AI**. See [The Documents page](https://plexiidesk.com/help/office-documents-page).

## Ask Plexii about your work

- On Office Home, the **AI Assistant** bar at the bottom has **Ask AI**, which opens Plexii, the assistant, for questions about your documents, data or presentations.
- In PlexiDocs, the **Assistant** button above the page opens Plexii.
- The assistant panels in PlexiSheets, PlexiSlides and PlexiDesign include **Ask your workspace**, which answers from everything in your workspace and shows the files it used.

See [Meet Plexii, your assistant](https://plexiidesk.com/help/ai-assistant).

## Good habits

- **Be specific.** "A risks section with a table of five risks, their likelihood and an owner" gets a better result than "add risks".
- **Read the preview.** If it is not right, use **Regenerate** or **Re-suggest**, or change your description and try again.
- **Check the figures.** In a spreadsheet, AI writes real formulas that the sheet calculates, so the numbers come from your data. Still check that a formula refers to the cells you meant.
- **Undo is there.** Anything AI adds can be undone like any other change.

## Common questions

**The AI says no key is set.**
AI is not set up yet. Sign in to use PlexiDesk credits, or add your own Anthropic key. See [AI settings](https://plexiidesk.com/help/settings-ai).

**Does AI change my file without asking?**
No. The editors show a preview first, and only change the file when you click to insert or apply.

**Can I see what changed after AI edited a file?**
Changes Plexii makes to a file for you are saved in version history labelled **AI edit**. See [Version history](https://plexiidesk.com/help/office-version-history).

## Related tasks

- [Draft and rewrite with AI in PlexiiDocs](https://plexiidesk.com/help/docs-ai-writing)
- [Describe a calculation, get a formula](https://plexiidesk.com/help/sheets-ai-formula)
- [Build a sheet with AI fill](https://plexiidesk.com/help/sheets-ai-fill)
- [Insights and questions about your sheet](https://plexiidesk.com/help/sheets-assistant-insights)
- [AI in PlexiiSlides](https://plexiidesk.com/help/slides-ai)
- [Meet Plexii, your assistant](https://plexiidesk.com/help/ai-assistant)