Comscore: March AI Chatbot Engagement Up 21.3% to 44.4M Visitors
SCOR•Comscore’s March 2026 data shows U.S. desktop AI chatbot platforms reached 44.4 million unique visitors, a 21.3% month-over-month gain. OpenAI ChatGPT led with 33.86 million visitors (+18.9%) while Anthropic Claude surged 130.1% to 2.66 million unique users.
1. Overall Engagement Growth
Comscore’s March 2026 rankings indicate U.S. desktop AI chatbot platforms collectively achieved 44.4 million unique visitors, marking a 21.3% increase from February’s total of 36.6 million. This growth underscores rising consumer adoption of AI assistants across multiple providers.
2. Leading Platforms
OpenAI’s ChatGPT retained the top position with 33.86 million U.S. desktop unique visitors, up 18.9% month-over-month. Google Gemini secured second place at 10.66 million visitors (+29.1%), followed by Microsoft Copilot at 5.02 million (+44.4%).
3. Fastest-Growing Challenger
Anthropic’s Claude posted the strongest monthly gain, soaring 130.1% to 2.66 million unique visitors and moving into fourth place. This rapid uptake highlights increasing consumer interest in emerging AI platforms beyond the market leaders.
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