ChatGPT Dominates AI Chatbot Traffic With 81% Share
Graphite's analysis of Similarweb data shows no rival has yet captured 10% of the AI chatbot market.
Updated on Nov. 9, 2026 in Artificial Intelligence
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ChatGPT accounts for more than 81% of worldwide traffic to major AI chatbots, according to research from Graphite based on Similarweb data. Its monthly visits climbed nearly 20% to a record 61.35 billion in September.
Why it matters
The concentration of traffic in a single service shapes how users, publishers and competitors reach AI tools and how referral traffic flows across the web. Usage had plateaued for seven months after a surge in the first half of 2025, which makes the September rebound notable.
Graphite analyzed web and app traffic to and from major AI services using Similarweb data, finding ChatGPT responsible for 60% of AI referral visits and 1.2 billion weekly users. Worldwide referral traffic from AI services jumped 92% over the past year, and the US accounts for 8.8% of worldwide AI traffic.
The players
Graphite
Graphite is a research firm that analyzed web and app traffic to major AI services for this report.
Similarweb
Similarweb is a digital analytics company that tracks website and app traffic data used across the AI industry.
The details
ChatGPT usage surged through the first half of 2025 before plateauing for seven months. Google's AI Overviews now appear in 62% of US searches, and Google's AI Mode drew 491 million US web visits in August.
Timeline
First half of 2025: ChatGPT usage surges.
Seven months after mid-2025: ChatGPT usage plateaus.
August 2026: Google AI Mode attracts 491 million US visits.
September 2026: ChatGPT monthly visits reach a record 61.35 billion.
November 9, 2026: Graphite publishes its AI chatbot traffic research.
Market Landscape
The traffic data measured by Similarweb shows AI chatbot usage has consolidated around a single leader rather than spreading across rivals. Google's AI Overviews and AI Mode are growing inside search, which indicates competition is shifting from standalone chatbots to features embedded in existing platforms.
Because ChatGPT handles the large majority of AI chatbot traffic, most people using these tools worldwide are interacting with a single service. Changes in Google's AI Overviews now appearing in 62% of US searches may also alter how users find websites and information in everyday searching.
The takeaway
Traffic concentration suggests that users and publishers should watch how AI referral patterns change, since a single service now drives most AI-originated visits. Tracking shifts in referral share can help site owners plan for where future visitors will come from.
Further reading
For broader context on how these tools are reshaping online discovery, explore Artificial Intelligence coverage on Wisevoter.
Source note: This article includes information reported by Business Insider.
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