ChatGPT Search Statistics: Users, Search Rate, Traffic and Citations

More than 1.2 billion people use ChatGPT every week, and OpenAI says search usage inside ChatGPT nearly tripled in the year to March 2026. ChatGPT now runs a web search on about a third of US prompts, and it cites roughly half of the pages it retrieves. Below are 32 numbered statistics on ChatGPT search usage, search triggers, referral traffic, citation behaviour and the crawler that decides eligibility. Each one comes from OpenAI or an original study, and all sources were read on 2 November 2026.

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What are the key takeaways?

• ChatGPT reaches more than 1.2 billion people a week. OpenAI gave that figure on 21 October 2026, up from 700 million weekly users in July 2025.
• Search use is growing faster than the user base. OpenAI says search usage nearly tripled in a year. In NBER research, information-seeking rose from 14% to 24% of all messages.
• Search runs on about a third of prompts. Semrush clickstream data shows search enabled on 34.5% of US ChatGPT queries in February 2026, down from 46% in late 2024.
• Outbound clicks still grew. ChatGPT referral traffic to other websites rose 206% year over year, and Google is now the largest single destination at 21.6%.
• ChatGPT cites about half of what it reads. Ahrefs found that 88% of cited URLs come from search results, and that Reddit makes up 67.8% of the pages it reads but does not cite.
• Eligibility starts with one crawler. OpenAI says a site must allow OAI-SearchBot to appear in ChatGPT search answers, and that placement is not guaranteed.

How many people use ChatGPT, and how many use its search?

ChatGPT had more than 1.2 billion weekly users in October 2026. It had 900 million in March 2026 and 700 million in July 2025. OpenAI does not publish a separate count of search users. It does say search usage nearly tripled in a year, and search has been open to everyone without signing in since February 2025.

1. More than 1.2 billion people use ChatGPT each week. Source: OpenAI, "ChatGPT Ads expands to 26 new countries", 21 October 2026.
2. More than 1 billion weekly active users by the end of August 2026. Source: OpenAI, "A milestone in expanding access to AI", 31 August 2026.
3. More than 900 million weekly active users and more than 50 million subscribers in March 2026. Source: OpenAI, "Accelerating the next phase of AI", 31 March 2026.
4. "Search usage has nearly tripled in a year," OpenAI said in March 2026. Source: OpenAI, 31 March 2026.
5. 700 million weekly users by July 2025, about 10% of the world's adults, sending 18 billion messages a week. Source: Chatterji et al., "How People Use ChatGPT", NBER Working Paper 34255, September 2025.
6. ChatGPT has 6x the monthly web visits and mobile sessions of the next largest AI app. Source: OpenAI, 31 March 2026.
7. 44% of US adults say they have used ChatGPT, more than any other chatbot. Gemini is second at 24%. Source: Pew Research Center, survey of 17 to 23 February 2026, published 17 June 2026.

Date	ChatGPT weekly users	Source
Jul 2025	700M	NBER w34255
Mar 2026	900M+	OpenAI
Aug 2026	1B+	OpenAI
Oct 2026	1.2B+	OpenAI

When did ChatGPT search launch, and who can use it?

OpenAI launched ChatGPT search on 31 October 2024 for Plus and Team users. It opened to all logged-in users on 16 December 2024 and to everyone, without an account, on 5 February 2025. Today it is available on every plan, from Free and Go to Enterprise and Edu, and to logged-out users.

8. Launched 31 October 2024 for Plus, Team and SearchGPT waitlist users, running on a fine-tuned version of GPT-4o. Source: OpenAI, "Introducing ChatGPT search", 31 October 2024.
9. Opened to all logged-in users on 16 December 2024 and to everyone without signup on 5 February 2025. Source: OpenAI, "Introducing ChatGPT search" (updates).
10. Available on Free, Go, Plus, Pro, Business, Enterprise and Edu, and to logged-out users. Source: OpenAI Help Center, "Searching the web with ChatGPT".
11. ChatGPT decides when to search, or the user can force it with the web search icon. Source: OpenAI, "Introducing ChatGPT search".

How often does ChatGPT actually search the web?

ChatGPT ran a web search on 34.5% of US queries in February 2026, according to Semrush's clickstream panel. That share has fallen from 46% in late 2024 and dropped every month from November 2025 to February 2026. Most prompts are still answered from the model alone, so your training-data footprint matters as well.

12. Search was enabled on 34.5% of US ChatGPT queries in February 2026, down from 46% in late 2024. Over the period the monthly rate ranged from 15% to 66.3%. Source: Semrush, "ChatGPT traffic analysis: insights from 17 months of clickstream data", 7 April 2026.
13. Search-enabled sessions declined every month from November 2025 to February 2026. Source: Semrush, 7 April 2026.
14. Seeking Information grew from 14% to 24% of all ChatGPT messages between July 2024 and July 2025. The NBER authors describe it as a close substitute for web search. Source: NBER w34255.
15. 49% of messages are Asking, 40% Doing and 11% Expressing. Asking is the intent closest to a search query. Source: NBER w34255.
16. Non-work messages rose from 53% to 73% of the total by June 2025. Source: NBER w34255.

How do ChatGPT search prompts differ from Google queries?

ChatGPT search prompts are longer and less predictable than keywords. Semrush found search-enabled prompts grew from 4.7 to 8.7 words. Between 65% and 85% of prompts matched no keyword in a 27-billion-keyword database, so keyword tools alone miss most of the questions that decide whether you get mentioned.

17. Search-enabled prompts grew from 4.7 to 8.7 words on average, while prompts without search shrank from 24.9 to 13.5 words. Source: Semrush, 7 April 2026.
18. 65% to 85% of ChatGPT prompts matched no keyword in Semrush's 27-billion-keyword database. The share that did match search terms rose from 18.9% in October 2025 to 34.9% in February 2026. Source: Semrush, 7 April 2026.
19. Queries per session rose to 1.75 by February 2026, about 50% above the 1.16 to 1.21 range seen through 2025. Source: Semrush, 7 April 2026.
20. ChatGPT rewrites a prompt into one or more targeted queries before sending them to its search providers, and can use approximate location and memories when it does. Source: OpenAI Help Center, "Searching the web with ChatGPT".

How much traffic does ChatGPT search send to websites?

ChatGPT's outbound referral traffic grew 206% from January 2025 to January 2026 in Semrush's US panel. The number of sites it sends visitors to peaked at about 260,000 a month in October 2025. Google is the largest single destination, and the top ten domains take just over 30% of all referrals.

21. Outbound referral traffic from ChatGPT grew 206% year over year, January 2025 to January 2026. Source: Semrush, 7 April 2026.
22. Unique domains receiving ChatGPT referrals grew from about 71,000 a month in October 2024 to a peak of about 260,000 in October 2025, then fell to about 170,000 by February 2026. Source: Semrush, 7 April 2026.
23. Google receives 21.6% of ChatGPT's referrals, up from about 14%, and the top ten domains take just over 30%. Source: Semrush, 7 April 2026.
24. Citation links appeared in about 6.8% of US ChatGPT prompts in May 2026, up from about 1.6% in June 2025. Travel and hospitality reached about 23%, and professional services stayed under 4%. Source: Similarweb, "AI Search Stats 2026", 29 July 2026.
25. Homepage referrals from ChatGPT rose from about 26% to 29% to about 62% to 63% of its referrals after the May 2026 update that made brand names clickable. Source: Similarweb, 29 July 2026.

For conversion rates and traffic share by AI platform, see our AI referral traffic statistics.

Which pages does ChatGPT search cite?

ChatGPT cites about half of the URLs it retrieves, Ahrefs found across 1.4 million prompts. Pages pulled from search results get cited 88.46% of the time, while Reddit threads are usually read and then dropped. Pages with descriptive slugs and titles close to the prompt wording get cited more often.

26. ChatGPT cites about 50% of the URLs it retrieves, with about 16.6 cited and 16.6 non-cited URLs per prompt. Source: Ahrefs, "Why ChatGPT Cites One Page Over Another (Study of 1.4M Prompts)".
27. Citation rate by source type: search results 88.46%, news 12.01%, Reddit 1.93%, YouTube 0.51%, academic 0.40%. 88% of all cited URLs came from search. Source: Ahrefs, 1.4M-prompt study.
28. Reddit makes up 67.8% of the URLs ChatGPT retrieves but does not cite. Source: Ahrefs, 1.4M-prompt study.
29. URLs with natural-language slugs had an 89.78% citation rate, against 81.11% for URLs without them. Cited titles were also closer to the prompt (similarity 0.602) than non-cited titles (0.484). Source: Ahrefs, 1.4M-prompt study.

Source type	Citation rate when retrieved
Search results	88.46%
News	12.01%
Reddit	1.93%
YouTube	0.51%
Academic	0.40%

Source: Ahrefs. For citation patterns across every engine, see our LLM citation statistics.

What decides whether a site can appear in ChatGPT search?

A site must allow OAI-SearchBot in robots.txt to be eligible for ChatGPT search answers. GPTBot, the training crawler, is controlled separately, so you can block training and still appear in search. OpenAI says robots.txt changes take about 24 hours to apply and that placement is never guaranteed.

30. "To make a website eligible" for ChatGPT search, OpenAI says to allow OAI-SearchBot, and "placement is not guaranteed." Source: OpenAI Help Center, "Searching the web with ChatGPT".
31. Sites that opt out of OAI-SearchBot are not shown in ChatGPT search answers, though they can still appear as navigational links. GPTBot and OAI-SearchBot settings are independent, and robots.txt changes take about 24 hours to apply. Source: OpenAI, "Overview of OpenAI crawlers".
32. A Cloudflare and OpenAI pilot helped OAI-SearchBot find and index hundreds of millions of new pages, using signals from about 1% of Cloudflare's network from July 2026. Source: Cloudflare, "Making AI discovery better for everyone", 15 October 2026.

How do ads change ChatGPT search results?

ChatGPT now shows ads on its Free and Go tiers in 89 countries, and OpenAI says ads are labelled and do not influence answers. The ads business passed a $1 billion annualised run rate in under 200 days. Organic mentions and paid placements now sit side by side, so you have to track them separately.

• More than 100,000 advertisers since launch, with ads in 89 countries and only on the Free and Go tiers. Plus, Pro and Enterprise stay ad-free. Source: OpenAI, 21 October 2026.
• A $1 billion annualised run rate in under 200 days. OpenAI says ads are labelled and do not influence ChatGPT's answers. Source: OpenAI, 31 August 2026.
• About 26% of ChatGPT responses contained an ad in Similarweb's 2026 data. Source: Similarweb, 29 July 2026.

What do these numbers mean for brand visibility?

ChatGPT search is now a second front page for most categories. Usage is growing, prompts are long and conversational, and only about half of the pages ChatGPT reads earn a citation. If you can't find your brand in ChatGPT, the cause is usually crawler access, a missing page for the question, or competitors whose pages answer it better.

Three moves follow from the data:

• Check crawler access first. Confirm that robots.txt allows OAI-SearchBot. Blocking GPTBot does not remove you from search, but blocking OAI-SearchBot does.
• Write for the prompt, not the keyword. With most prompts matching no keyword, pages that answer a full buying question in plain words, with a descriptive slug and title, have the edge.
• Measure answers, not rankings. Our guide to checking if ChatGPT mentions your brand shows the manual method, and our AI brand monitoring tools guide compares the software options.

Track which brands ChatGPT search names and cites for your buying questions. Start free, no card.

Where does Mentionova fit, and where does it not?

Mentionova runs your buyers' real questions through ChatGPT and other answer engines on a weekly, two-weekly or monthly schedule. Each run logs whether ChatGPT named you, whether it cited your domain, your position, the sentiment and every source it used. That shows you why AI cites your competitors and which pages to fix.

What it does well:

• Answers "why isn't my brand in ChatGPT?" You see which competitors ChatGPT named and which URLs it cited instead of you.
• Compares engines side by side. ChatGPT, Perplexity, Claude, Gemini, Google AI and Reddit are tracked, so you can tell a ChatGPT-only gap from a gap everywhere.
• Exports cited sources as CSV, grouped by URL or domain.

Limits worth knowing: it reports what ChatGPT says for the prompts you track, not every ChatGPT conversation. Starter is $99 a month billed annually ($125 monthly) with 25 tracked prompts and three engines (ChatGPT, Perplexity and Google). Scale covers all six. See pricing.

Where does each number come from?

• OpenAI: "Introducing ChatGPT search" (31 October 2024, with updates); "Accelerating the next phase of AI" (31 March 2026); "A milestone in expanding access to AI" (31 August 2026); "ChatGPT Ads expands to 26 new countries" (21 October 2026).
• OpenAI Help Center, "Searching the web with ChatGPT", and OpenAI platform docs, "Overview of OpenAI crawlers".
• Chatterji, Cunningham, Deming, Hitzig, Ong, Shan and Wadman, "How People Use ChatGPT", NBER Working Paper 34255 (September 2025).
• Semrush, ChatGPT clickstream analysis, October 2024 to February 2026 (7 April 2026).
• Similarweb, AI Search Stats 2026 (29 July 2026).
• Ahrefs, study of ChatGPT citations across 1.4 million prompts.
• Pew Research Center, chatbot use chart (published 17 June 2026; survey 17 to 23 February 2026).
• Cloudflare, "Making AI discovery better for everyone" (15 October 2026).
• Mentionova plan details: mentionova.com/pricing.

All sources were read on 2 November 2026.

What do people ask about ChatGPT search?

How many people use ChatGPT search?

OpenAI does not publish a separate figure for search users. More than 1.2 billion people use ChatGPT each week, and OpenAI said in March 2026 that search usage had nearly tripled in a year. Semrush data shows search runs on about a third of US prompts.

Is ChatGPT search free?

Yes. ChatGPT search is available on the Free and Go tiers, on paid plans and to logged-out users. It has been open to everyone without signing in since 5 February 2025. Ads now appear on the Free and Go tiers in 89 countries.

Where does ChatGPT search get its results?

ChatGPT rewrites your prompt into one or more search queries and sends them to third-party search providers, then adds content from news partners. Ahrefs found 88% of the pages ChatGPT cites come from search results, so strong ordinary search rankings still feed ChatGPT answers.

How do I get my website into ChatGPT search results?

Allow OAI-SearchBot in robots.txt, because OpenAI says that is what makes a site eligible. Then publish pages that answer specific buying questions directly, with descriptive slugs and titles. Track the prompts your buyers ask to see whether ChatGPT cites you, and remember OpenAI says placement is not guaranteed.

Why isn't my brand showing up in ChatGPT?

The most common causes are a blocked OAI-SearchBot, no page that answers the exact question, or competitor pages that match the prompt more closely. ChatGPT cites only about half of the pages it reads. Look at the URLs it cites for your category to see what it prefers.

Does blocking GPTBot remove my site from ChatGPT search?

No. GPTBot is OpenAI's training crawler and OAI-SearchBot is its search crawler, and OpenAI treats the two settings as independent. A site can block GPTBot and still appear in ChatGPT search answers as long as OAI-SearchBot is allowed.

Is there a platform that tracks brand citations across multiple AI engines?

Yes. AI visibility trackers re-run the same buying questions on several engines and log mentions, citations and the sources each answer used. Mentionova covers ChatGPT, Perplexity, Claude, Gemini, Google AI and Reddit, with a free trial and no card required.

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