Mobile momentum: Copilot and ChatGPT lead AI usage shift as marketers track engagement trends

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Generative AI is quickly becoming mobile-native. According to new Comscore data, Microsoft Copilot and ChatGPT are seeing significant traction on mobile devices, with Copilot reaching nearly 6.2 million U.S. mobile users in July and ChatGPT drawing 4.6 million.

The data marks a strategic milestone: generative AI is no longer confined to desktops or professional workflows. Consumers are engaging with these tools on-the-go, a shift that has major implications for marketers looking to build experiences around discovery, utility, and convenience.

Microsoft Copilot’s integration with mobile productivity apps like Word and Excel is clearly paying off, helping it edge out ChatGPT in mobile reach. However, OpenAI’s app has steadily grown since launch and has become a staple for younger users and digital-first audiences.

For marketers, the rise of mobile AI tools brings two priorities into focus. First, campaign experiences must be optimized for micro-moments—brief, high-intent interactions where consumers turn to AI for answers, ideas, or solutions. Second, branded integrations within AI ecosystems will need to adapt to mobile behaviors: shorter sessions, multitasking contexts, and real-time expectations.

This shift also suggests that AI will increasingly influence content consumption, purchase journeys, and search behaviors across apps—not just browsers. Brands that rethink their customer journeys to include AI-assisted discovery and decision-making may find new white spaces for influence.

With generative AI moving from the desktop to the pocket, marketing teams now face the next frontier: designing for utility, not novelty.