Microsoft disclosed its Copilot AI assistant has 15 million paid seats, a 160% year-over-year increase. This figure, revealed for the first time, includes major enterprise adopters like Fiserv, ING, and the U.S. Department of the Interior. The $30 per user monthly price point is attracting business, but the raw number sparks immediate questions about scale.

The shock stems from context: those 15 million users represent only 3.3% of Microsoft 365's 450 million total subscribers. Similarly, GitHub Copilot's 4.7 million paid subscribers are just 3.1% of GitHub's 150 million developers. UBS analyst Karl Keirstead stated Microsoft must "prove that these are good investments," noting M365 revenue growth isn't accelerating due to Copilot.

Usage metrics show deep engagement where adopted—conversations per user doubled and daily actives rose tenfold. Yet, the market perceives a crowded, capital-intensive model market. The data suggests Copilot's current revenue impact is minimal relative to Microsoft's massive AI infrastructure investments. For now, investor confidence rests more on Azure's AI cloud services than on Copilot's direct monetization.