Microsoft says its Copilot AI tool is a 'vital companion' in new analysis of 37.5M conversations

In a new preprint titled “It’s About Time: The Copilot Usage Report 2025,” Microsoft AI researchers analyzed 37.5 million de-identified Copilot conversations between January and September of this year.

Enterprise and school accounts were excluded, and machine classifiers labeled each chat by topic and “intent,” such as searching for information, getting advice, or creating content.

The top-line finding: on desktop computers, Copilot usage centers on work and technical questions during business hours. On mobile, it’s about health — all day, every day.

“Health and Fitness” paired with information-seeking was the single most common topic-intent combination for mobile users, and stayed in the top spot every hour of the day across the nine-month window.

The paper suggests this shows how people increasingly treat Copilot on their phones as a private advisor for personal questions, not just a search tool.

Read more | GEEK WIRE