Microsoft Copilot

Copilot puts top-tier OpenAI models one keypress away on every Windows machine — free, with web grounding by default. Pro lights it up inside Word, Excel, PowerPoint and Outlook: drafting documents, building slides from a prompt and reasoning over spreadsheets. For Microsoft-centric workers it's the least-friction AI there is.

For the billion people in Windows + Office, Copilot's placement beats a better chatbot in another tab. The free tier is a legitimately strong general assistant.

Every place Microsoft Copilot shows up across Choose My Stack — the research it’s part of and the articles that cover it.

The honest list