Microsoft Copilot is an AI assistant embedded directly into the Microsoft 365 apps you already use every day — Word, Excel, PowerPoint, Outlook, Teams, and more. Unlike standalone AI chatbots, Copilot works *inside* your documents, spreadsheets, and emails, with full access to your organizational data through Microsoft Graph.
How Copilot Works Under the Hood
Copilot combines large language models (based on OpenAI's GPT-4 architecture) with your Microsoft 365 data — your emails, files, meetings, chats, and calendar. When you ask Copilot a question, it:
- Processes your natural-language prompt
- Searches your Microsoft Graph data (emails, files, chats) for relevant context
- Generates a response grounded in your actual organizational data
- Returns the result inside the app you're working in
This is fundamentally different from using ChatGPT, because Copilot already knows about your work — your documents, your meetings, your team's files.
Copilot vs. ChatGPT vs. Bing Chat
- ChatGPT — A general-purpose AI chatbot. Great for broad questions and creative tasks, but doesn't know about your work files.
- Microsoft Copilot (free, Bing-based) — A free AI chat experience in Edge, Windows, and bing.com. Uses web data, not your M365 data.
- Microsoft 365 Copilot — The premium, enterprise-grade AI built into M365 apps. This is what we'll cover in this course.
Licensing & Requirements
Microsoft 365 Copilot requires a Microsoft 365 E3/E5 or Business Standard/Premium license, plus the Copilot add-on ($30/user/month as of early 2026). Your organization's IT admin needs to enable it. Files should be stored in OneDrive or SharePoint for Copilot to access them.
Why This Matters
Microsoft Office is used by over 1.5 billion people worldwide. Having AI embedded in these tools means productivity gains aren't theoretical — they happen in the apps where work actually gets done.