Free, web-only, and not the reason anyone should be picking Copilot.
The unpaid Copilot included with any Microsoft 365 Business or Enterprise subscription. Web-grounded only, with no access to mailbox, files, or Teams content. Capped image generation and access to the latest models only at off-peak hours.
Now removed from Word, Excel, PowerPoint, and OneNote (15 April 2026) unless you hold a paid Copilot licence. As a general chatbot, ChatGPT free and Claude free are both better. No real reason to use it over those.
Free with any qualifying M365 subscription.