What Microsoft Copilot is in 2026
Copilot is Microsoft's AI brand — a single name covering the consumer chat at copilot.microsoft.com, the in-app assistants in Word/Excel/PowerPoint/Outlook/Teams, the Windows-level Copilot, and a growing set of enterprise agents in Dynamics and Power Platform.
Under the hood, the models are largely OpenAI's (GPT-5 family) with Microsoft's orchestration, retrieval against your Microsoft Graph data (emails, files, meetings), and the compliance/security guarantees enterprises need.
Who it's for
Anyone whose organization is on Microsoft 365. Copilot lives inside the apps your users already open — drafting emails in Outlook, formulas in Excel, slides in PowerPoint — which produces real adoption rates that standalone AI subscriptions struggle to match.
Standout features
Microsoft Graph integration — Copilot in M365 has structured access to your emails, calendar, files, and Teams chats. "Summarise what happened in the project last week" actually works.
Teams meeting recap — automatic, structured, and shareable.
Excel analysis — point Copilot at a sheet and ask questions in English; it writes formulas, explains data, and builds charts.
The honest take
Copilot is rarely the best AI experience available, but it's the AI that gets adopted because it lives where work happens. If you run a company on M365, Copilot for M365 is the right enterprise pick. For individual power users, ChatGPT, Claude, or Gemini directly will give you a better tool.