STATISTICS

AI traffic statistics in 2026

AI assistants sent 0.43% of web traffic in September 2026 (Ahrefs), and ChatGPT accounted for 95.1% of AI referrals in August 2026 (BrightEdge).

Updated October 30, 20264 min read

0.43%Share of all website traffic from AI in Sep 2026 (Ahrefs)
95.1%ChatGPT's share of AI referral traffic in Aug 2026 (BrightEdge)
770.7MMonthly AI referral visits worldwide, up 117.4% YoY (Similarweb)

In short

AI assistants sent 0.43% of all website traffic across 115,254 sites in September 2026, while traditional search engines sent 26.82%, according to Ahrefs.
ChatGPT accounted for 95.1% of AI referral traffic in August 2026, as measured by BrightEdge.
Worldwide AI referral visits averaged 770.7 million per month between June 2025 and May 2026, representing 117.4% year-over-year growth in Similarweb's tracking.

In Ahrefs' September 2026 benchmark, AI assistants sent 0.43% of website traffic across 115,254 sites. Below are the current benchmarks on AI referral volume, assistant market share, and conversion rates, plus how to track whether ChatGPT cites your pages.

Top AI traffic numbers at a glance

The benchmarks below cover AI referral traffic, visitor conversions and ChatGPT usage.

Number	What it measures	Source	Date
0.43%	Share of all website traffic sent by AI assistants across 115,254 sites	Ahrefs	Sep 2026
1.08%	Share of website traffic from AI referrals across 1,215 enterprise sites	Conductor	May to Sep 2025
95.1%	ChatGPT's share of all AI referral traffic sent to websites	BrightEdge	Aug 2026
770.7M	Monthly AI referral visits to websites worldwide (up 117.4% YoY)	Similarweb	Jun 2025 to May 2026
101%	Growth in ChatGPT referral traffic from January to August 2026	BrightEdge	Sep 2026
0.62%	Ratio of ChatGPT sessions compared to Google organic sessions across 100 sites	Marie Haynes	Oct 2026
1.81%	Conversion rate of ChatGPT visitors across 94 ecommerce brands	Visibility Labs	2025 (pub. Feb 2026)
+90%	Higher conversion rate for AI visitors to U.S. retail sites vs non-AI visitors	Adobe	Sep 2026
1.2B	ChatGPT weekly active users	OpenAI	Sep 29, 2026

Similarweb counted 770.7 million AI referral visits a month worldwide from June 2025 to May 2026, up 117.4% year over year. For more on how search and chat split user habits, read our guide to ChatGPT vs Google.

26.82% vs 0.43%: Traditional search engines sent 26.82% of website traffic across 115,254 sites in September 2026, compared to 0.43% from AI assistants (Ahrefs).
1.08%: Share of website traffic from AI referrals across 1,215 enterprise sites from May to September 2025 (Conductor, Nov 12, 2025).
0.62%: Size of ChatGPT referral sessions relative to Google organic sessions across 100 sites (Marie Haynes, Oct 21, 2026).
770.7 million (up 117.4% YoY): Average monthly AI referral visits worldwide between June 2025 and May 2026 (Similarweb, Sep 3, 2026).
101%: Growth in ChatGPT referral traffic between January and August 2026 (BrightEdge, Sep 24, 2026).
71%: Year-over-year growth in AI traffic to U.S. retail websites in September 2026 (Adobe, Oct 29, 2026).

Which AI assistants send the most traffic

ChatGPT sent 95.1% of AI referral traffic in August 2026, according to BrightEdge. See more user and query data in our full list of ChatGPT statistics.

95.1%: ChatGPT's share of AI referral traffic in August 2026, followed by Gemini at 2.4%, Perplexity at 1.1%, and Claude at 0.8% (BrightEdge, Sep 24, 2026).
About 53%: ChatGPT's share of generative AI web visits in May 2026, down from about 76% in June 2025 (Similarweb, Jul 29, 2026).
5.9 billion: Estimated web-only visits to chatgpt.com in September 2026 (Similarweb via Visual Capitalist).

Scale of ChatGPT usage behind the clicks

The gap between how many people use ChatGPT and how many click out to websites shows why zero-click searches are the norm in AI answers. OpenAI launched ChatGPT search on October 31, 2024 and opened it to everyone without sign-up on February 5, 2025.

1.2 billion: ChatGPT weekly active users on September 29, 2026 (OpenAI), up from 900 million on February 27, 2026 and 800 million on October 6, 2025 (TechCrunch).
More than 2.5 billion: Messages handled by ChatGPT a day in July 2025 (The Verge; no newer official figure exists).
24%: Share of ChatGPT messages categorized as "Seeking Information" in OpenAI's September 15, 2025 study (up from 14% a year earlier), while 70% of messages were non-work.

How AI referral traffic converts

Visitors who click a link inside an AI answer often convert well, though results vary depending on which channel you compare them against.

90% higher conversion and 83% more revenue per visit: Performance of AI visitors to U.S. retail sites compared to non-AI visitors in September 2026 (Adobe, Oct 29, 2026).
1.81% vs 1.39%: Conversion rate of ChatGPT visitors versus non-branded organic search visitors across 94 ecommerce brands in 2025 (Visibility Labs, Feb 26, 2026).
973 sites: Sample size of a 2026 Marketing Science study finding that ChatGPT-referred conversions ranked above paid social, but below the other traditional channels.

What these numbers mean for your business

ChatGPT had 1.2 billion weekly users on September 29, 2026; in OpenAI's September 15, 2025 study, 24% of messages were categorized as seeking information.

To capture both citations and referral clicks in SEO in 2026, allow OAI-SearchBot in your robots.txt file so your pages can appear in ChatGPT search answers (OpenAI, Oct 2026). You can test any URL with our free GEO audit, which needs no account, allows 5 audits a day, fetches your page with the OAI-SearchBot user agent, rebuilds the title and snippet of about 200 characters that ChatGPT's search keeps, and returns a score out of 100 with a letter grade.

To track whether ChatGPT finds or cites your pages, FoundByChat checks the questions your customers ask in ChatGPT with web search on every 2 hours, as a user in the United States or the Netherlands. It records whether ChatGPT's search found your page, whether the answer cited it, and what title and snippet ChatGPT keeps in its index. It is free to start without a password or credit card.

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Questions

How much traffic does ChatGPT send to websites?

AI assistants sent 0.43% of total website traffic in September 2026 (Ahrefs), and ChatGPT accounted for 95.1% of AI referral traffic in August 2026 (BrightEdge). Across 100 sites studied by Marie Haynes, reported in October 2026, ChatGPT sessions equaled 0.62% of Google organic sessions.

How do I track ChatGPT referral traffic in analytics?

According to OpenAI's publisher FAQ (October 2026), ChatGPT referrals carry utm_source=chatgpt.com. Filter your analytics reports by this source or the chatgpt.com referrer to count visits and conversions.

Does blocking GPTBot stop my site from getting ChatGPT traffic?

No. OpenAI's bot settings are independent: GPTBot crawls content that may be used to train generative AI foundation models, whereas OAI-SearchBot surfaces websites in ChatGPT's search features. Blocking GPTBot does not remove your site from ChatGPT search answers.

Do ChatGPT visitors convert better than Google search visitors?

It depends on the benchmark. Visibility Labs (94 ecommerce brands, 2025) found ChatGPT visitors converted at 1.81% versus 1.39% for non-branded organic search, while a 2026 Marketing Science study of 973 sites found ChatGPT-referred conversions beat paid social but trailed the other traditional channels.

Why is AI referral traffic so low compared to ChatGPT's user numbers?

ChatGPT reached 1.2 billion weekly users in September 2026, but it answers questions directly in the chat.