Microsoft’s AI assistant, Copilot, is seeing a dramatic surge in mobile adoption as enterprise integration and product bundling reshape user behavior, Adweek reports based on Comscore data. From March to June 2025, Copilot gained 5.6 million mobile users, a remarkable leap that outpaces ChatGPT’s gain of 3.9 million over the same period.
A Closer Look at the Numbers
- Copilot rose 175 percent from March to June, reaching 8.8 million mobile users in the U.S.
- ChatGPT added 3.9 million users, posting a 17.9 percent growth for a total of 25.4 million mobile users.
- Google Gemini also gained ground, increasing its mobile user base by 68 percent to 14.3 million, aided in part by its placement on Pixel devices.
During the same quarter, mobile usage of AI tools soared 5.3 percent to 73.4 million users, while desktop usage dropped 11.1 percent.
What Is Driving Copilot’s Growth?
Brian Pugh, Comscore’s chief product officer, attributes Copilot’s rapid adoption to its usefulness in professional environments. He emphasizes Copilot’s integration with Microsoft 365, Windows, and Azure makes it a powerful productivity tool that fits naturally into enterprise workflows.
Smriti Sharma, SVP Custom IQ at Comscore, notes that consumers are gravitating toward AI that feels like a trusted companion; tools that respond to voice, visual input, and intuitive context on mobile devices.
Platform Loyalty and Ecosystem Play
A striking 85 percent of top AI assistant users remain loyal to a single tool, demonstrating that many of these apps are becoming habitual rather than experimental. OpenAI has particularly strong retention, while users of Copilot and Gemini tend to explore multiple platforms.
Microsoft’s broad enterprise foothold is offering tailwinds for Copilot: existing licensing, bundled distribution, and compliance tools make Copilot easy to deploy at scale. Meanwhile, Google’s preloading of Gemini on Pixel devices highlights how hardware deals can move users quickly.
Bigger Picture: Revenue and Influence
These growth figures map directly onto business outcomes. Microsoft’s Azure revenue topped $75 billion annually, boosted significantly by AI demand, according to CEO Satya Nadella.
OpenAI, separately, is reporting $10 billion in annual recurring income from ChatGPT subscriptions and API usage.
