How much traffic do AI Overviews actually take?

Pew Research (July 2025) measured that users clicked a traditional result in 8% of visits where an AI summary appeared, versus 15% without one — roughly half the click propensity. Impact varies by query type: informational queries lose the most, transactional and navigational the least.

Does cannibalization mean SEO investment is wasted?

No — it means the return shifts from clicks to citations. The same indexed, authoritative content that ranked now feeds the AI answers users read instead. Brands that stop investing disappear from both surfaces; the correction is measuring visibility in answers, not only sessions.

What Is AI Cannibalization of Search?

Last updated: July 5, 2026 · Menra Team

AI cannibalization of search is the substitution of traditional search sessions — query, results page, click — by AI assistant sessions and AI-augmented SERPs that resolve the question without a website visit. It is the demand-side shock behind GEO: the questions still get asked, but a growing share of them are answered by ChatGPT, Gemini, Perplexity, or an AI Overview instead of a click to your site.

What the measurements show

The clearest public datapoint is Pew Research Center's July 2025 study: when Google showed an AI summary, users clicked a traditional result link in about 8% of visits, versus 15% when no summary appeared. AI Overviews, launched at Google I/O in May 2024, reached over 1.5 billion monthly users within a year, and publishers across news and reference verticals reported double-digit organic declines through 2024-2025. On the destination side, OpenAI's 800 million weekly ChatGPT users (October 2025) represent question volume that never touches a SERP at all.

Which queries get cannibalized first

Informational lookups — definitions, how-tos, comparisons — are absorbed almost entirely; the answer is the product.
Early-funnel research — "best X for Y" shortlists — moves into assistants, which compress ten-tab research into one reply.
Navigational and transactional queries resist longest: users still need to reach a checkout or login page.
YMYL edge cases vary as engines hedge on medical and financial topics.

The strategic response

Cannibalization changes the scoreboard, not the game. Content still needs to be crawled, indexed, and trusted — but the payoff increasingly arrives as a mention or citation inside an answer rather than a session in analytics. That makes zero-click visibility a first-class KPI: track share of answer across engines, monitor AI referral traffic as the residual click stream, and price content investments against influence, not sessions.

Example: a cookware publisher losing 30% of informational organic traffic still appears in most "best skillet" AI answers — the audience didn't leave; the measurement layer had to follow them.

Frequently asked questions

How much traffic do AI Overviews actually take?: Pew Research (July 2025) measured that users clicked a traditional result in 8% of visits where an AI summary appeared, versus 15% without one — roughly half the click propensity. Impact varies by query type: informational queries lose the most, transactional and navigational the least.
Does cannibalization mean SEO investment is wasted?: No — it means the return shifts from clicks to citations. The same indexed, authoritative content that ranked now feeds the AI answers users read instead. Brands that stop investing disappear from both surfaces; the correction is measuring visibility in answers, not only sessions.

Keep exploring

See how AI engines talk about your brand — track mentions across ChatGPT, Perplexity, Claude, Gemini and 5 more. Start with Menra