Microsoft Copilot is the AI assistant woven through the world's most-used software: Windows, Edge, Bing, and, in its paid form, the Microsoft 365 apps where office work actually happens.

The free Copilot, on the web, in Windows, and in mobile apps, is a full-featured assistant powered by frontier OpenAI models plus Microsoft's own: chat, web-grounded answers with citations, image generation, voice conversations, and document understanding. Copilot Pro upgrades individuals with priority access to the latest models and AI inside Word, Excel, PowerPoint, Outlook, and OneNote for personal Microsoft 365 subscribers.

The enterprise product, Microsoft 365 Copilot, is the deeper play: grounded in your organization's emails, meetings, chats, and files via Microsoft Graph, it drafts documents from your actual context, summarizes Teams meetings, triages Outlook, and builds decks from Word docs, with enterprise-grade permissions and compliance.

Who is it for?

Windows users who want capable free AI, Microsoft 365 households upgrading their apps, and enterprises rolling out AI where their documents, meetings, and mail already live.

How much does Microsoft Copilot cost?

Copilot is free with generous limits. Copilot Pro is $20 per month per person. Microsoft 365 Copilot for business is $30 per user per month on top of an eligible Microsoft 365 plan.

Our verdict

The free Copilot is one of the best-value assistants anywhere, and inside organizations that live in Microsoft 365, the work-grounded version is transformative. Standalone-model purists may prefer the labs directly; everyone else gets frontier AI where they already work.