A data roundup of how much traffic ChatGPT, Perplexity, Gemini, Claude and Copilot send to websites, and how those visitors behave and convert. Every figure comes from the company that measured it: Microsoft Clarity, Adobe Digital Insights, Conductor, Ahrefs, Semrush, Cloudflare, Pew Research Center and Vercel.
AI referral traffic is still small, at about 1.08% of all website visits across 10 industries in Conductor’s 2025 benchmark, but it converts far better than most channels: Adobe measured 83% higher revenue per visit from AI traffic to U.S. retailers in September 2026, and Ahrefs got 12.1% of its sign-ups from 0.5% of its visitors (Conductor, Adobe, Ahrefs). Use this page if you need to size AI referrals against search, explain them to leadership, or set a benchmark for your own analytics. Skip it if you want visit totals for individual AI apps; those are on our ChatGPT statistics and Perplexity statistics pages. To see your own AI referrals by engine and landing page, Mentionova’s AI traffic analytics reads GA4 and splits ChatGPT, Perplexity, Gemini, Copilot and Claude out of the Referral bucket. Every figure below has a verbatim quote in our ledger.
Key takeaways
- 1.08% of all website traffic came from AI referrals across 10 industries, May to September 2025 (Conductor)
- 87.4% of AI referral traffic came from ChatGPT in the same benchmark (Conductor)
- 83% higher revenue per visit from AI traffic than non-AI traffic at U.S. retailers in September 2026 (Adobe)
- 12.1% of Ahrefs sign-ups came from AI search, which drove 0.5% of its traffic (Ahrefs)
- 1.66% sign-up rate from LLM visitors on publisher sites, against 0.15% from search (Microsoft Clarity)
- 8% of Google visits ended in a click on a regular result when an AI summary showed, against 15% without one (Pew Research Center)
How much traffic does AI send to websites?
Every large dataset puts AI referrals between about a quarter of a percent and just over 1% of total visits. The spread comes from who is measured: Conductor looks at large enterprise brands, Ahrefs at a broad panel of sites using its analytics, and Clarity at publishers.
- AI referrals made up 1.08% of all website traffic across 10 industries from May to September 2025 (Conductor).
- Conductor’s dataset covered more than 3.3 billion sessions, of which more than 35.7 million came from LLMs and chatbots, across 1,215 enterprise domains (Conductor).
- AI referral traffic grows around 1% month over month on average, per Conductor (Conductor).
- AI traffic averaged 0.25% of a site’s total traffic in June 2025 across the 81,947 sites in Ahrefs’ study (Ahrefs).
- All AI chatbots combined sent 3.5 million visitors to 74,752 tracked sites in March 2026, or 0.28% of their traffic (Ahrefs).
- AI referrals were still under 1% of overall traffic on the 1,200+ publisher and news sites Clarity measured (Microsoft Clarity).
- In Clarity’s 2026 behaviour study, the AI Platform channel was under 1% of sessions, against 23.25% for organic search and 24.80% for direct (Microsoft Clarity).
- Unattributed traffic was 33.34% of sessions in the same study, which is where some hidden AI visits end up (Microsoft Clarity).
- Google was still the top referral source at 39.35% of all referral traffic in Ahrefs’ June 2025 study (Ahrefs).
- Google sent 210x more traffic than the big three AI platforms combined, down from 345x in March 2025 (Ahrefs).
- Google’s referral share on Ahrefs’ chatbot panel fell from 35.11% in June 2025 to 30.53% in March 2026 (Ahrefs).
Source: Ahrefs, Ahrefs and Conductor. Panels differ, so compare the direction, not the decimals.
How fast is AI referral traffic growing?
- Traffic from AI platforms to 1,200+ publisher and news sites grew 155.6% over eight months in 2025, per Microsoft Clarity (Microsoft Clarity).
- Over the same eight months, Search grew 24.0%, Social 21.5% and Direct 14.9% (Microsoft Clarity).
- AI-referred traffic grew 22% in the six months to March 2026 in Clarity data (Microsoft Clarity).
- The average site’s AI traffic grew about 9.7x in a year while its search traffic fell about 21% (Ahrefs).
- ChatGPT referrals grew 85% from January to June 2025 (Ahrefs).
- Claude referrals grew 153.5% month over month in March 2026, after Anthropic expanded web search, and Gemini grew 21.2% (Ahrefs).
- ChatGPT is the slowest-growing of the four big AI referrers, at a 1.4% average monthly growth rate; Perplexity averages 2.9% (Ahrefs).
- AI traffic to U.S. retail sites grew 393% year over year in the first quarter of 2026 and 269% in March 2026 (Adobe).
- AI traffic to U.S. retail sites was up 693% in the November to December 2025 holiday season (Adobe).
- AI traffic to U.S. retail sites grew 71% year over year in September 2026 (Adobe).
- Adobe forecasts AI retail traffic up 159% on Thanksgiving, 95% on Black Friday and 88% on Cyber Monday 2026 (Adobe).
- Semrush projects AI search could send more visitors than traditional search for digital marketing and SEO topics by early 2028 (Semrush). This is a projection, not a measurement.
Source: Adobe, April 2026 and Adobe, October 2026. Growth rates fall as the base gets bigger.
Which AI platforms send the most traffic?
- ChatGPT supplied 87.4% of AI referral traffic across Conductor’s 10 industries (Conductor).
- ChatGPT drives 88.5% of AI referral traffic in the IT sector (Conductor).
- ChatGPT sends more than 80% of AI traffic in Ahrefs’ panel (Ahrefs).
- Gemini drove 21% of AI traffic to Utilities, and Copilot 5% of AI traffic to Financials, the clearest exceptions to ChatGPT’s lead (Conductor).
- Claude was credited by 2,836 new Ahrefs users at sign-up in March 2026, ahead of ChatGPT (1,978), Gemini (619) and Perplexity (67) (Ahrefs). These are self-reported answers, not tracked referrals.
| AI source | Self-attributed Ahrefs sign-ups, March 2026 |
|---|---|
| Claude | 2,836 |
| ChatGPT | 1,978 |
| Gemini | 619 |
| Perplexity | 67 |
Source: Ahrefs, AI chatbot traffic (May 2026). “How did you hear about us” answers at onboarding.
Which industries get the most AI referrals?
- IT gets 2.80% of its traffic from AI referrals and Consumer Staples 1.91%, the highest of 10 industries (Conductor).
- Communication Services (.25%) and Utilities (.35%) get the least (Conductor).
- Semiconductors get 4.09% and software and services 3.37% of their traffic from AI, against 0.99% for technology hardware (Conductor).
- Organic search still brings 42.4% of Health Care traffic, 39.6% of Communication Services and 33.8% of Industrials (Conductor).
| Industry | AI referral share of traffic |
|---|---|
| Information Technology | 2.80% |
| Consumer Staples | 1.91% |
| All 10 industries | 1.08% |
| Utilities | 0.35% |
| Communication Services | 0.25% |
Source: Conductor AEO/GEO benchmarks report, U.S. data, May to September 2025.
Does AI traffic convert better?
Yes, in every primary dataset we found from 2026, though not always in 2025. Adobe’s retail numbers flipped from negative to strongly positive in about a year.
- AI retail traffic converted 90% better than non-AI traffic in September 2026, after converting 9% worse in August 2025 (Adobe).
- AI traffic generated 83% higher revenue per visit than non-AI traffic at U.S. retailers in September 2026 (Adobe).
- AI retail traffic converted 42% better in March 2026, against 38% worse in March 2025 (Adobe).
- LLM visitors to publisher sites signed up at 1.66%, against 0.15% from search, 0.13% from direct and 0.46% from social (Microsoft Clarity).
- LLM visitors subscribed at 1.34%, against 0.55% from search, 0.41% from direct and 0.37% from social (Microsoft Clarity).
- Copilot referrals subscribed at 17x the rate of direct traffic and 15x search; Perplexity at 7x (Microsoft Clarity).
- 52% of 1,277 domains converted AI visitors into sign-ups or subscriptions within a month (Microsoft Clarity).
- AI search drove 12.1% of Ahrefs sign-ups from 0.5% of its traffic (Ahrefs).
- Ahrefs’ AI search visitors converted at a 23x higher rate than its organic search visitors (Ahrefs).
- The average LLM visitor is worth 4.4x the average organic search visitor, based on conversion rate, per Semrush (Semrush).
- ChatGPT referred around 10% of new Vercel sign-ups in 2025, up from 4.8% the month before and 1% six months earlier (Vercel).
| Channel | Sign-up rate | Subscription rate |
|---|---|---|
| LLMs | 1.66% | 1.34% |
| Search | 0.15% | 0.55% |
| Social | 0.46% | 0.37% |
Source: Microsoft Clarity, November 2025, one month of smart-event data on publisher sites. Direct: 0.13% and 0.41%.
How do AI visitors behave on site?
- AI visitors to U.S. retail sites spent 73% more time, viewed 25% more pages and added to cart 53% more often than non-AI visitors in September 2026 (Adobe).
- In March 2026, AI retail visitors had 12% higher engagement, 48% longer visits and 13% more pages per visit (Adobe).
- AI platform sessions had 21.6% fewer quick backs than organic search, 1.60 against 2.04 per session (Microsoft Clarity).
- AI sessions lasted about 943 seconds over 10.6 pages, against 849 seconds over 16.8 pages from organic search (Microsoft Clarity).
- AI sessions had more rage clicks than organic search, 0.009 against 0.006 per session; Paid Search was higher still at 0.011 (Microsoft Clarity).
- Clarity’s behaviour study covered more than 30 billion sessions from the 2,000 Clarity projects with the most LLM traffic (Microsoft Clarity).
- Ahrefs’ AI search visitors viewed 50% more pages than search visitors, and 80% landed on the homepage, free tools or product pages (Ahrefs).
| Channel | Avg session (s) | Pages per session |
|---|---|---|
| AI Platform | 943.41 | 10.61 |
| Organic Search | 849.06 | 16.84 |
| Referral | 772.05 | 12.41 |
| Paid Search | 520.36 | 9.43 |
| Social | 242.25 | 3.34 |
Source: Microsoft Clarity, April 2026, October 2025 to March 2026. AI Platform scroll distance: 2,554.05 px.
Do AI answers reduce clicks from search?
- Google users clicked a regular search result in 8% of visits when an AI summary appeared, against 15% when none did (Pew Research Center).
- Users clicked a link inside the AI summary itself in just 1% of visits (Pew Research Center).
- Users ended their browsing session on 26% of pages with an AI summary, against 16% of pages without (Pew Research Center).
- 18% of Google searches in March 2025 produced an AI summary, across 68,879 unique searches by 900 U.S. adults (Pew Research Center).
How much do AI crawlers take compared with what they send?
Cloudflare’s crawl-to-refer ratio counts HTML page requests from a platform’s crawlers for every HTML page visit it refers back. Native apps often strip the Referer header, so the ratios overstate the gap somewhat.
- Crawl-to-refer ratios for June 19 to 26, 2025 ranged from Anthropic’s 70,900:1 to Mistral’s 0.1:1 (Cloudflare).
- Anthropic went from 286,930 crawls per human visitor in January 2025 to 38,065 in July (Cloudflare).
- Perplexity went the other way, from 54 to 195 crawls per human visitor (Cloudflare).
- OpenAI’s ratio dropped from 1,217 to 1,091 crawls per visitor, and Microsoft’s held near 40 (38.5 to 40.7) (Cloudflare).
- 80% of AI crawling over 12 months was for training, 18% for search and 2% for user actions (Cloudflare).
- Anthropic’s crawl-to-refer ratio reached as much as 500,000:1 in 2025, while Google’s rose from just over 3:1 to as high as 30:1 (Cloudflare).
| Platform | Crawls per referred visit, July 2025 |
|---|---|
| Anthropic | 38,065 |
| OpenAI | 1,091 |
| Perplexity | 195 |
| Microsoft | 40.7 |
Source: Cloudflare, August 2025. Lower is better for publishers.
Why AI referrals are undercounted
- Clarity identifies AI referrals from known referral patterns; if the source is hidden, the visit can show up as Direct (Microsoft Learn). Clarity’s AI channel also counts only standalone apps like chatgpt.com and copilot.microsoft.com, not AI features inside search engines.
- Adobe’s retail benchmark covers more than 1 trillion visits to U.S. retail sites, 100 million SKUs and 18 product categories, which is why its numbers are the most stable (Adobe).
- 39% of U.S. consumers have used AI for online shopping and 85% of them say it improved the experience (Adobe).
- 66% of Adobe’s survey respondents believe AI tools give accurate results (Adobe).
What to do with this data
- Split AI out of Referral. GA4 doesn’t give AI its own default channel, so build an AI segment or use a tool that does it for you. Mentionova’s AI traffic analytics does this from GA4 with no pixel; our AI traffic analytics tools ranking compares the options.
- Judge AI by conversions, not sessions. It is a small channel by volume, and the datasets above all show it punching above its weight on sign-ups and revenue.
- Expect undercounting. Apps that strip the referrer push AI visits into Direct or Unattributed, so your real AI share is likely higher than your report shows.
- Track the answers that create the clicks. Clicks only come after a citation. Mentionova tracks ChatGPT, Perplexity, Claude, Gemini, Google AI Overviews and Reddit from $99/mo billed annually, and our AI visibility tools and AI citation tracking tools rankings compare the alternatives.
- Fix friction on high-intent pages. AI visitors land deep and go straight to pricing and sign-up flows, so test those pages first.
For more context, see our AI search statistics, AI shopping statistics, AI crawler statistics, Google AI Overviews statistics and GEO statistics.
Definitions
- AI referral traffic: visits that arrive by clicking a link inside an AI assistant’s answer, such as ChatGPT, Perplexity, Gemini, Claude or Copilot.
- AI Platform / Paid AI Platform: Microsoft Clarity’s two AI channels, for organic links and for ads shown inside AI chat experiences.
- Conversion rate: the share of visits that complete a goal, such as a sign-up, subscription or purchase.
- Revenue per visit: total revenue divided by visits, used by Adobe to compare AI and non-AI retail traffic.
- Quick back: Clarity’s signal for a visitor who leaves a page almost immediately after landing.
- Rage click: repeated rapid clicks on the same spot, a sign of friction.
- Crawl-to-refer ratio: Cloudflare’s count of crawler page requests per page visit referred back to the site.
- Self-attributed sign-up: a new user who names a source in a “how did you hear about us” question.
Frequently asked questions
What percentage of website traffic comes from AI?
About 1%. Conductor measured 1.08% across 10 industries in 2025; Ahrefs’ panel put it at 0.25% to 0.28%; Clarity found under 1% on publisher sites.
Which AI platform sends the most traffic?
ChatGPT. It supplied 87.4% of AI referrals in Conductor’s benchmark and more than 80% in Ahrefs’ panel. Gemini and Copilot lead only in a few industries.
Does AI traffic convert better than organic search?
In current data, yes. Adobe saw AI retail traffic convert 90% better in September 2026, Ahrefs saw a 23x higher rate, and Semrush values an LLM visitor at 4.4x an organic visitor.
How fast is AI referral traffic growing?
Fast but slowing as it scales: Adobe saw 393% growth in Q1 2026 and 71% in September 2026, while Clarity measured 22% over the six months to March 2026.
Which industries get the most AI traffic?
Information Technology (2.80%) and Consumer Staples (1.91%). Inside IT, semiconductors reach 4.09% and software 3.37%.
Do AI Overviews reduce clicks?
Pew found Google users clicked a regular result in 8% of visits with an AI summary versus 15% without, and clicked a link inside the summary in 1% of visits.
Why does GA4 show so little AI traffic?
GA4 files AI visits under Referral, and apps that strip the referrer show up as Direct. Microsoft documents the same limit for Clarity’s AI channel.
How do I track AI referral traffic?
Use a GA4 segment for AI referrer domains, Clarity’s AI Platform channel, or an AI traffic analytics tool such as Mentionova that splits visits by engine and landing page.
Do AI crawlers send traffic back?
Far less than they take. Cloudflare measured Anthropic at 38,065 crawls per referred visit in July 2025, OpenAI at 1,091 and Perplexity at 195.
Will AI traffic overtake search traffic?
Not yet. Google still sent 210x more traffic than the big three AI platforms in mid-2025. Semrush projects AI could pass search for marketing topics by early 2028.
How we compiled these statistics
We fetched 16 primary source pages from Microsoft, Adobe, Conductor, Ahrefs, Semrush, Cloudflare, Pew Research Center and Vercel on November 4, 2026 and recorded 71 data points in docs/content/stats-ledgers/ai-referral-traffic-statistics.json. Every numbered figure above maps to a ledger row with a verbatim quote from the page we fetched. Each source measured its own data: Clarity and Adobe from their analytics platforms, Conductor and Ahrefs from customer and panel sites, Pew from a browsing panel, and Ahrefs and Vercel from their own sign-ups. We left out market-report sites, traffic-panel estimates and figures we couldn’t trace to the original publisher. Projections are labelled as projections.
Sources
- Microsoft Clarity: AI traffic converts at 3x the rate of other channels (November 2025)
- Microsoft Clarity: AI visitors show stronger intent signals (April 2026)
- Microsoft Learn: AIPlatform and PaidAIPlatform channels
- Adobe: AI traffic surge, retail sites not machine-readable (April 2026)
- Adobe: AI traffic generates 83% higher revenue per visit (October 2026)
- Conductor: The 2026 AEO / GEO Benchmarks Report
- Conductor: Information Technology, 2026 AEO / GEO Benchmarks
- Ahrefs: 0.5% of visitors drove 12.1% of signups (June 2025)
- Ahrefs: AI traffic has increased 9.7x in the past year (June 2025)
- Ahrefs: AI chatbot traffic (May 2026)
- Semrush: AI search SEO traffic study (July 2025)
- Pew Research Center: Google users are less likely to click on links when an AI summary appears (July 2025)
- Cloudflare: The crawl before the fall of referrals (July 2025)
- Cloudflare: The crawl-to-click gap (August 2025)
- Cloudflare: Radar 2025 Year in Review
- Vercel: How Vercel’s adapting SEO for LLMs and AI search (June 2025)