40+ Latest Semrush AI Statistics for 2026

AI search changed faster in 2026 than most SEOs expected. Google’s AI Overviews now reach billions of users every month, ChatGPT crossed a billion weekly users, and click-through rates on traditional search results keep dropping.

Below, I pull together Semrush’s own AI SEO statistics alongside newer 2026 data from Google, OpenAI, Adobe, and independent research firms, so you get the full, current picture in one place.

Quick Highlights

• Nearly 70% of businesses report higher ROI after adding AI into their SEO and content workflows
• Google AI Overviews now reach roughly 2.5 billion monthly users, up from 2 billion in late 2025
• ChatGPT crossed 1 billion weekly active users by May 2026, making it one of the fastest-growing apps ever
• Zero-click searches on Google hit 68% in the first four months of 2026, up from 60.45% in 2024
• AI-referred traffic converts at rates several times higher than traditional organic traffic

AI Adoption and Market Growth

AI search adoption has moved from early-adopter territory into the mainstream, and the numbers back that up clearly.

1. ChatGPT reached over 700 million weekly active users by late 2025, according to OpenAI, and crossed the 1 billion mark by May 2026 per SensorTower data. It’s now the fourth most visited website globally, pulling over 5 billion monthly visits.

Adoption in lower-income countries runs more than four times higher than in high-income countries, a genuinely surprising pattern that suggests AI chat interfaces are becoming a default entry point to information worldwide, not just a tool for wealthy markets.

2. Google AI Mode has surpassed 1 billion monthly users as of June 2026, per Google’s own disclosures, and now operates in more than 200 countries and territories. Query volume inside AI Mode has reportedly more than doubled each quarter since its March 2025 launch.

3. Perplexity reported 45 million active users in the second half of 2025, up 20 million year over year, alongside an estimated $148 million in annual recurring revenue. Its relative share of AI referral traffic has actually declined since April 2025, though, dropping by more than 40% as Google’s Gemini gained ground in the chatbot referral space.

ChatGPT alone now accounts for roughly 20% of search-related traffic worldwide and about 12% in the US specifically, according to Graphite’s March 2026 tracking.

Here’s how the major AI platforms compare on scale as of mid-2026:

Platform	User Base	Notable Trend
Google AI Overviews	~2.5 billion monthly users	Grew from 2B in late 2025
Google AI Mode	1+ billion monthly users	Doubling query volume quarterly
ChatGPT	1 billion+ weekly active users	Fastest-growing app ever
Gemini app	750 million+ monthly active users	120,000+ enterprises using it
Perplexity	45 million active users	Losing referral share to Gemini

Google AI Overviews: The Numbers Behind the Feature

AI Overviews remain the single biggest shift in how Google Search actually looks and behaves.

AI Overview prevalence varies a fair bit depending on who’s measuring and how. Semrush’s own research put it at appearing across a large share of informational queries as of late 2025, while SeoProfy’s November 2025 tracking found it stabilizing around 15 to 16% of all queries after peaking near 25% mid-2025.

Other trackers, like Conductor’s Q1 2026 analysis of 21.9 million searches, found a 25.11% trigger rate, and some 2026 studies report figures as high as 48% for specific query categories.

The honest takeaway: methodology and query sets matter a lot here, and no single number should be treated as gospel.

Over 88% of searches that trigger AI Overviews carry informational intent. Commercial queries make up under 9%, transactional under 2%, and navigational just over 1%.

95% of keywords that trigger AI Overviews show no ads or very low commercial value, per Semrush’s analysis. Google appears to be protecting high-value ad inventory while experimenting with AI on informational searches. That said, ad presence inside AI Overviews is climbing fast: one 2026 tracker found ads now appear in 25.5% of AI Overview results, up 394% from just 5.17% in early 2025.

Over 68% of terms triggering AI Overviews get 100 or fewer monthly searches, and nearly 80% fall into the low keyword-difficulty range. Long-tail, low-competition content faces the highest disruption risk from this feature.

Click-Through Rate and Traffic Impact

This is where AI search stops being an abstract trend and starts hitting actual site traffic numbers.

• Roughly 60 to 68% of Google searches now end without a click, depending on the dataset and time period measured, up from about 60.45% in 2024.
• When an AI Overview appears, only 8% of users click a traditional link below it. Without an AI Overview present, that number nearly doubles to 15%, a drop of close to 47% relative click-through.
• About 1 in 4 searches showing AI summaries end without any further action at all, compared to just 16% for standard result pages.
• Being featured as a cited source inside an AI Overview does help, though modestly. Click-through rate for cited sources rises from about 0.6% to 1.08%, based on research across more than 7,800 queries. Some 2026 data puts the lift even higher, with organic CTR running 35% higher when a brand is directly cited inside an Overview.
• Google search traffic to publishers fell 33% globally in the year to November 2025, according to the Reuters Institute and Chartbeat’s January 2026 report, with US publishers hit even harder at a 38% decline. Google Discover referrals to over 2,500 tracked publisher sites dropped 21% over the same period.
• ChatGPT referrals to publishers grew over 200% in the same window, but this still accounts for under 1% of total referral traffic industry-wide. Chatbot traffic is growing fast in percentage terms, but it isn’t remotely close to replacing what traditional search traffic has lost.

Who AI Platforms Actually Cite

Understanding what AI systems link to matters more than ever if citations are becoming a real visibility channel.

• 50% of all ChatGPT citations point to business and service websites. News and media sites account for 9.5%, blogs and content sites 8.3%, and ecommerce sites 7.6%.
• Reddit, Wikipedia, and YouTube combined account for roughly 24% of all sources ChatGPT cites, and listicle or how-to content formats make up over 40% of LLM citations overall.
• ChatGPT Search primarily cites pages ranking at position 21 or lower on Google in about 90% of cases, according to one 2026 analysis, favoring a different pool of sources than a typical page-one Google ranking would suggest.
• On the flip side, roughly 76% of URLs cited in AI Overviews specifically also rank in Google’s top 10, showing AI Overviews and ChatGPT pull from fairly different source pools despite both being “AI search.”
• Only around 20% of URLs cited by both ChatGPT and Perplexity also rank in Google’s top 10 for the matching query, per BrightEdge research, reinforcing that classic SEO rank and AI citation are related but genuinely distinct games.

User Trust and Behavior

People don’t treat AI-generated answers the same way they treat a page of blue links, and the trust data shows real skepticism mixed with real reliance.

• Around 80% of consumers now use AI summaries for at least 40% of their searches, getting what they need directly on the results page rather than clicking through.
• About 70% of users read only the first third of an AI Overview before moving on, meaning early placement inside the summary carries outsized weight.
• Over 80% of users report at least some skepticism toward AI Overviews, and only about 9% say they always trust what they see.
• Just 19% of users click through to the sources actually cited in an AI Overview, even when they read the summary closely.
• Over 40% of users say they’ve personally seen inaccurate or misleading content inside an AI Overview, a meaningful trust gap that content creators and platforms alike are still working through.
• Nearly 35% of US Gen Z users (ages 16-27) now use AI chatbots to search for information, more than any other age group, though they still use traditional search and visual platforms like YouTube and TikTok alongside AI tools rather than instead of them.
• 51% of B2B decision-makers now begin product research inside an AI chatbot rather than a traditional search engine, according to G2’s March 2026 Answer Economy report.

AI Content Creation Statistics

The other half of the story is how much AI is being used to create the content that’s now competing for these AI citations.

• AI-generated content’s share of Google’s top search results grew from 2.27% in 2019 to over 17% in 2025, per Originality.ai’s tracking, though the growth hasn’t been linear. A notable dip followed Google’s March 2024 core update, showing AI content remains genuinely vulnerable to algorithm changes.
• About two-thirds of AI-generated content starts ranking within two months of publishing.
• Nearly 50% of ecommerce sellers now use AI to write product descriptions, a practical use case that scales well for stores with large catalogs.
• 67% of small businesses use AI for content marketing and SEO work in some capacity, according to HubSpot’s 2025 State of Marketing report.
• Almost 70% of businesses report higher ROI after integrating AI into SEO and content workflows, largely attributed to faster topic planning, drafting, and publishing speed, freeing teams to focus more time on strategy.

Conversion Value of AI Traffic

Even with all the click-through declines, the traffic that does arrive from AI platforms tends to convert unusually well.

• Semrush’s own research found the average AI search visitor is worth 4.4 times more than a traditional organic search visitor from a conversion standpoint.
• For retail sites specifically, AI-referred visits show a 27% lower bounce rate than non-AI traffic and run 38% longer, with visitors viewing more pages per session, according to Adobe’s 2025 data.
• Adobe separately reported AI-driven traffic to US retail sites surged as much as 269% year over year by March 2026.
• Brands appearing in ChatGPT recommendations were found to be 2.5 times more likely to receive a site visit within 7 days compared to brands that weren’t recommended, per Similarweb data from June 2026.

What This Means For Your SEO Strategy

Three shifts stand out clearly across all this data: consumers are genuinely moving from typing searches to reading AI-generated answers, click-through rates on traditional listings keep sliding, and showing up inside AI search results is becoming a real, measurable driver of higher-intent visitors, even if the volume stays modest for now.

A few practical moves worth making:

• Track AI visibility directly, not just traditional rankings. Tools like Semrush’s AI Visibility Toolkit show a visibility score and flag which of your pages get cited, and where you’re being cited but not credited by name.
• Improve conversion on the traffic you already get, since overall click volume is shrinking industry-wide regardless of what any single site does. Clear CTAs, real proof points instead of vague claims, and simple sign-up flows all help offset lower raw traffic.
• Redefine what “success” looks like for SEO reporting. Rankings and raw traffic alone don’t capture the full picture anymore. AI visibility, engagement quality, and actual conversion rate matter just as much, arguably more, going into the rest of 2026.

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