AI Visibility · 11 August 2026

By Eddie Eastwood, Founder

The State of AI Search 2026: Every Number, Fully Sourced

Open any article about AI search and you will meet the same handful of numbers. Billions of users. Half of all searches. Traffic up by hundreds of percent. The figures get copied from one blog to the next, each writer trusting the last, until nobody linking to them can tell you where they started. Some are real. Some are a year out of date. A few were never sourced at all.

This piece is the correction, refreshed for August 2026. It collects the numbers that actually matter for a business thinking about AI search. Each one is traced back to its real primary source and quoted directly. Where a widely repeated figure has no traceable source, or has since been superseded, we say so and leave it out.

How to read this piece

Each number below carries the organisation that produced it and a link to the exact page. We have grouped them by what they measure: how many people see AI answers, how much clicking they cost you, how much traffic actually reaches your site, and how fast AI is taking over local recommendations. Every figure below comes from a primary with a stated method: Google, Ahrefs, Moz, BrightLocal, and a randomised field experiment from Carnegie Mellon and the Indian School of Business.

Reach: how large AI search has become in 2026

The clearest sign of how far AI search has moved in 2026 is Google's own numbers. At Google I/O in May 2026, the company said AI Mode has surpassed 1 billion monthly users, with queries more than doubling every quarter since launch.^[1]

The click cost: what AI answers do to your click-through rate

Being visible in an AI answer and earning a click from it are two different things, and the newest research is the first to separate cause from correlation. Ahrefs re-ran its click-through-rate study on December 2025 data and found that the presence of an AI Overview now correlates with a 58% lower average click-through rate for the page that ranks first. That is up from the 34.5% Ahrefs measured when it first ran the study on 2024 data.^[2] That figure is a correlation; it does not by itself prove the AI Overview caused the drop.

The causal evidence arrived in April 2026. Researchers at Carnegie Mellon University and the Indian School of Business ran a randomised field experiment with 1,065 US desktop Chrome users: for half of them, AI Overviews were hidden from Google's results. On queries that triggered an AI Overview, organic clicks fell by 38% for the group who saw them. The authors describe it as the first randomised field experiment into how AI Overviews influence real-world user behaviour, which makes it causal evidence rather than correlation.^[3]

Fewer clicks would matter less if the businesses AI cites were still the ones ranking well in Google. Increasingly, they are not. Moz studied roughly 40,000 queries in Google's AI Mode and found 88% of citations do not come from the organic top 10 for the exact same query; at domain level, only about one in five citations come from sites that also rank in the top 10.^[4]

AI-referral traffic: what actually lands on your site

Most sites see at least some AI referral traffic: Ahrefs found 63% of sites receive some traffic from AI platforms.^[7] But the volume is thin. Across all sites, AI sends just 0.1% of total referral traffic, and the smaller the site, the larger that share tends to be: sites under 10,000 monthly visits can expect 0.3% of their traffic to come from AI platforms, against 0.1% for sites over 1 million visits.^[8] It is also traffic that increasingly costs you a click even when it doesn't send you a visitor, as the section above shows. For a fuller treatment of how to measure this in your own analytics, see our guide to how ChatGPT and Google organic traffic compare and the wider picture in the zero-click search era.

Local AI: recommendations move to the assistants

For local service businesses, the sharpest movement is in how people ask for a recommendation. BrightLocal's Local Consumer Review Survey 2026 found that use of ChatGPT and other generative AI tools for local recommendations rose from 6% last year to 45%, making AI the third most popular source of business recommendations.^[5]

Two supporting figures from the same survey show how that research is shifting. Google's share of where consumers read reviews slipped from 83% to 71% in a year, a decline BrightLocal does not attribute to any one destination. Separately, 41% of consumers now "always" read reviews when choosing a business, up from 29%: people are checking more before they choose, wherever they read.^[5] If your business depends on being found locally, the AI Visibility Gap Report and how often Google answers with AI are the two pieces to read next.

The numbers that get repeated but have no primary

Part of the point of a sourced reference is naming what could not be sourced, or what could no longer be verified this time round. A few figures circulate widely and did not survive tracing:

• "AI is now more than 50% of all searches." No primary study supports this figure as far as we can tell. AI Mode alone has passed a billion monthly users, but that measures a feature inside Google, not a share of total search, so we left it out.
• "Zero-click searches have risen from 54% to 72%." This figure is repeated across several 2026 AI-search round-ups, usually attributed to the same causal study we cite above, but we could not locate it in the parts of that study we were able to access directly, so it stays out until we can confirm it against the primary.
• "Only 1.2% of business locations get recommended in ChatGPT, against 35.9% appearing in Google's local 3-pack, with 68% Google Business Profile match accuracy." SOCi's 2026 Local Visibility Index is a real study, covering 2,700 companies and 350,000 locations, but these specific percentages sit behind a "download the full report" gate we could not access, so we could not quote-match them against SOCi's own text and left them out.
• "AI Overviews cut click-through rates by 34.5%." This was genuinely Ahrefs' own finding, but from data now a year old. Ahrefs has since re-run the study on more recent data and found a larger 58% drop, which is the figure used above.

The figures above are the ones that most change how you should think about AI search right now.

What this means for a business

For any one business, the effect of that scale is not more visits. The direct traffic AI answers send to any one site is still small, and the newest research shows those answers are now measurably cutting into the click as well as replacing it outright. For local recommendations, AI has gone from a rounding error to a mainstream source inside a single year. The businesses that benefit are the ones an assistant can read, understand and quote, and that is decided by how the site is built.

Check where you stand

You can test some of this yourself. Ask ChatGPT, Gemini or Perplexity the questions your customers would ask, in their words, and note whether your business comes up and what the assistant says about it. Run each prompt a few times, since answers vary.

That tells you the output. It does not tell you why. A QBiz Leads AI visibility check scans your own website in about thirty seconds and returns a plain pass or fail on the signals that decide whether AI tools can read and quote you: structure, schema, clarity and machine-legibility. It reads your site, not the engines, so it will not tell you who is named in ChatGPT, but it will tell you whether your site is built to be found in the first place.

Get your AI Visibility audit →

Frequently asked questions

Is AI really taking over search in 2026?

In reach, yes. Google's AI Mode alone has surpassed 1 billion monthly users, with queries more than doubling every quarter since launch, and ChatGPT reported 800 million weekly active users at its October 2025 DevDay. What that scale does not mean is that AI has replaced the click at the same rate: on queries where an AI Overview appears, organic clicks fall by 38%, which the click-cost section covers in full.

How much website traffic actually comes from AI?

Still a small slice for most sites. Ahrefs found that 63% of sites receive some AI referral traffic, but it comes to about 0.1% of total referrals overall, and around 0.3% for sites under 10,000 visits. That thin referral share also sits alongside a measured drop in organic clicks when an AI Overview appears; the click-cost section gives those figures.

Do AI Overviews really cut into clicks, or is that overstated?

It is not overstated. The clearest evidence is a randomised field experiment from researchers at Carnegie Mellon University and the Indian School of Business: on queries that triggered an AI Overview, organic clicks fell by 38% for the group who saw them. Separately, Ahrefs found the presence of an AI Overview now correlates with a 58% lower click-through rate for the page that ranks first, up from the 34.5% Ahrefs measured a year earlier. And Moz found 88% of Google AI Mode citations do not come from the organic top 10 for the exact same query, so ranking well and being cited are no longer the same task.

Do these numbers apply to a small local business?

The local-recommendation shift does, sharply. BrightLocal found consumers using generative AI for local business recommendations rose from 6% to 45% in a year, now the third most popular source. For a local business, being readable by AI tools has moved from optional to central in a very short time.