Merlin
An AI assistant available through a browser extension and other entry points for web research, document understanding, summaries and writing.
Microsoft’s personal AI offering, with additional Word, Excel, PowerPoint and Outlook features in eligible Microsoft 365 subscriptions.
Core features
- Assist with document and presentation drafts
- Analyze spreadsheets and summarize email in eligible plans
- Research and multi-step work assistance
When to use it
Useful for people organizing documents, email and office work in Microsoft 365.
Plans and practical limits
Individual subscriptions have AI usage limits, and some AI benefits belong only to the subscription owner rather than all shared members.
The personal assistant entry and subscription-based office features have different entitlements; listed features are not all free.
Sources and review
Official source 1 · Official source 2 · Checked 19 October 2026. Based on public official sources; signed-in and paid features were not tested.
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