Many businesses use both ChatGPT and M365 Copilot. Here's when to use which:

Use M365 Copilot When

• Working inside Office apps (Word, Excel, PowerPoint, Outlook, Teams)
• You need it to reference your company's emails, documents, and meetings
• Your org is already on Microsoft 365
• You need enterprise compliance and data governance

Use ChatGPT When

• General research, brainstorming, and writing outside Office
• Complex coding tasks
• Tasks requiring a large plugin ecosystem
• You need the latest GPT-4o features

Bottom Line

M365 Copilot wins inside the Microsoft ecosystem. ChatGPT wins everywhere else.

Reference:

M365 Copilot overview

https://www.microsoft.com/en-us/microsoft-365/business/copilot-for-microsoft-365