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Market Share

ChatGPT in the U.S. vs Internationally

ChatGPT is stronger in the United States than almost anywhere else — its web-visit share runs near 58.9% in the US versus about 54.7% worldwide — yet the US is steadily shrinking as a share of its total base as adoption accelerates abroad. The US share of ChatGPT users has fallen from roughly 38% in 2024 toward the low 30s and, by some traffic measures, under 20%, while India has become the second-largest single-country market and Asia-Pacific is the fastest-growing region. This page maps where ChatGPT is strongest, how the US-vs-international balance is shifting, and which countries drive the most usage.

4 visualizations 4 sources Last updated June 2026 Free to embed
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Source: Presenc AI (US share 38%→31%, 2024–2026). Traffic-based measures (DemandSage / Similarweb) put the US even lower, near 18.5% of visitors — different denominators, same direction.
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CHART 1 · WHERE THE LEAD IS BIGGEST

ChatGPT web-visit share: US vs worldwide

Web-visit share: worldwide vs US (April 2026)

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Source: Similarweb (via Momentic, June 2026); First Page Sage US estimates. Web-visit share within the leading-assistants set, April 2026. ChatGPT's share runs higher in the US (~58.9%) than worldwide (~54.7%).
Chart 2 · The US is shrinking as a share

US share of ChatGPT's user base over time

US share of ChatGPT's user base (by users)

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Source: Presenc AI (US 38% → 31%, 2024→2026); DemandSage (US ~18.5% of visitors by traffic). Different denominators give different levels; both show the same direction — the US is a declining share as international adoption accelerates.
Chart 3 · Top countries

ChatGPT usage share by country

ChatGPT visitor share by country (2026)

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Source: DemandSage / Similarweb, 2026: US 18.5%, India 9.8%, Brazil 5.6%, Japan 4.2%. Share of worldwide visitors. The long tail across 190+ countries makes up the remainder.
Chart 4 · Where growth is fastest

Regional share shift, 2024 vs 2026

Regional share of ChatGPT users, 2024 vs 2026

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Source: Presenc AI, 2026: Asia-Pacific rose from 19% to 24% of users; India ~48M users, the #2 single-country market after the US (~142M). Low- and middle-income countries are growing several times faster than high-income ones.

About this data

This page compiles published estimates of ChatGPT's usage in the United States relative to the rest of the world, drawing on Similarweb web-traffic data (via Momentic), First Page Sage US estimates, and country/region breakdowns from Presenc AI and DemandSage.

The AI Behavior Index is the research arm of OneChat AI, an integrated multi-model AI platform. We compile and analyze data from primary research sources to make AI adoption and market trends more accessible to journalists, researchers, and decision-makers.

Why US-share figures range from ~18% to ~38%: they measure different things. Share of total users (Presenc AI) puts the US near 31% and falling; share of web visitors (DemandSage/Similarweb) puts the US near 18.5%; web-visit share within a country (how much of that market ChatGPT holds) puts the US near 58.9%. These are not contradictory — they answer different questions, and all three point to the same trend: the US is a high-intensity but shrinking slice of a globalizing base.

Methodology notes: country and regional shares are drawn from panel-modeled traffic and usage estimates that carry error bands and are revised over time. "User" counts and "visitor" counts use different definitions across vendors, which is the main reason absolute levels differ. Regional 2024-vs-2026 points are disclosed anchors; intermediate movement is directional.

Sources used on this page:

Corrections or suggestions: research@aibehaviorindex.org

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Every statistic shown is sourced from a publicly available study, survey, or report. We aggregate, organize, and contextualize this data — but the underlying research is conducted by the cited sources. Click any source link to access the original methodology. If you run into any issues or have a study to suggest, contact us at research@aibehaviorindex.org.