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Microsoft's AI assistant in Word, Excel, Outlook, Teams and other 365 apps, grounded in your work files.
Microsoft 365 Copilot is an AI assistant inside the Office apps many businesses already use. It can draft documents and emails, summarize meetings and answer questions using your company's own files. Partners also build agents on it, for example to read and code invoices.
Copilot works inside Microsoft 365 apps and draws on your organization's emails, files and meetings. Copilot Chat comes with eligible plans; a Copilot licence adds Copilot in the apps, Work IQ grounding, Microsoft's Researcher and Analyst agents, and custom agents. Copilot Studio builds agents.
FinanceVendor or secondhand (evidence grade C)
Construction contractor (Perry Contracting), partner-built
A helper suggests the account code, and a person still has to say yes.
OperationsLight evidence (evidence grade D)
Copilot can sum up a long email for you, and meeting notes may need a paid add-on.
FinanceVendor or secondhand (evidence grade C)
Small accounting firm (Bregman Accountants, Zoetermeer, Netherlands)
A small firm lets Copilot answer from its own files, and the partner says hours came back.
Know before you start
Copilot Chat comes at no extra cost with eligible Microsoft business plans. The full Copilot licence is paid per user, either as an add-on or bundled into the Business Standard and Business Premium plans.
Price checked Oct 16, 2026 on microsoft.com. Prices and plans change; check the official site before you buy.