Studies
AI Search Statistics for 2026: Survey, Research & Trends
In this article, we have compiled key findings and insights on how the AI search user experience is changing right now, which sources are most frequently cited in AI search results, and which AI search trends are worth paying attention to.
AI Search Stats Key Takeaways
- 71.2% of AI search answers include at least one citation.
- An average answer includes 3.7 citations, while about 29% of answers include none.
- The top 10 domains account for only 14.5% of all citations.
- 64.3% of all cited domains appear only once, showing a strong long-tail effect.
- Wikipedia, YouTube, and Reddit are the three most cited domains in AI search results.
Survey: Daily Interaction with AI Search
We surveyed 1,000 U.S. residents aged 20-55 to understand how often they interact with AI search throughout the day and identified the main usage patterns.
Research: Source Citations in AI Search Results
Citations in AI search answers help people trust the result and understand where the information comes from. To spot patterns at scale, we analyzed a dataset with 24,069 real multi-turn search sessions across 13 AI search models from OpenAI, Google, and Perplexity. The dataset covers 72 languages and contains over 171,000 individual source citations.
71.2%
of answers contain at least one citation
55,892
unique domains cited
72
languages in queries
3.7
avg citations per answer
How Many Sources Do AI Search Engines Cite?
On average, an AI search answer contains 3.7 citations (median = 3). However, nearly 29% of answers cite nothing at all, while some responses pack up to 47 sources into a single reply.
Source: Searcherries
Most Cited Domains in AI Search
The single most-cited domain across all AI search answers is Wikipedia (8,218 citations across 55 language editions), followed by YouTube (7,370) and Reddit (4,318). Video and user-generated content play a significant role in AI search results.
Source: Searcherries
| Rank | Domain | Category | Citations | Share |
|---|---|---|---|---|
| 1 | wikipedia.org | Encyclopedia | 8,218 | 4.8% |
| 2 | youtube.com | Video | 7,370 | 4.3% |
| 3 | reddit.com | UGC | 4,318 | 2.5% |
| 4 | reuters.com | News | 1,494 | 0.9% |
| 5 | github.com | Code | 1,491 | 0.9% |
| 6 | google.com | Search | 1,029 | 0.6% |
| 7 | pmc.ncbi.nlm.nih.gov | Academic | 961 | 0.6% |
| 8 | arxiv.org | Academic | 905 | 0.5% |
| 9 | apnews.com | News | 903 | 0.5% |
| 10 | linkedin.com | Professional | 504 | 0.3% |
Source: Searcherries
The Long Tail: Can Smaller Websites Appear in AI Search?
Despite the dominance of YouTube and Wikipedia at the top, AI search citations are remarkably spread out. The top 10 domains account for just 14.5% of all citations, and the top 100 for only 25%. Meanwhile, 35,939 domains (64% of all) were cited exactly once — showing that AI search engines pull from a very long tail of sources.
Source: Searcherries
14.5%
of citations go to the top 10 domains
25.0%
of citations go to the top 100 domains
64.3%
of domains were cited only once
Source Category Breakdown
We classified every cited domain into one of eight categories. The vast majority of citations (80.3%) go to websites outside the traditional "authoritative" categories. Video platforms account for 4.5%, encyclopedias for 4.2%, and user-generated content platforms (Reddit, Stack Overflow, Medium) for 3.2%. News sources make up just 2.9% of all citations, while academic journals and government/education sites together account for 3.8%.
Source: Searcherries
Social and UGC Platforms in AI Search Results
Social and user-generated content platforms together account for 8.3% of all AI search citations (14,239 citations). YouTube alone makes up more than half of that figure. Reddit is cited more often than any traditional news outlet.
Source: Searcherries
Commercial vs. Non-profit Domains
Breaking down citations by top-level domain type, 58.6% come from commercial domains (.com, .io, .ai), while non-profit domains (.org, .edu, .gov) make up 14.8%. Country-code TLDs represent 19.3% of all citations.
Source: Searcherries
Citation Count Varies by Language
Not all languages receive the same number of source citations. Indonesian queries get the most citations on average (4.33 per answer), while Korean queries get the fewest (3.20). English sits in the middle at 3.94. This gap may reflect differences in the availability of web content across languages.
Source: Searcherries
What Do People Ask AI Search Engines?
The most common query type is Factual Lookup (19.3% of all queries), followed by Information Synthesis (18.6%). Recommendation queries generate the most citations on average (4.71), while Text Processing queries generate the fewest (1.87).
Source: Searcherries
| Query Type | Share of Queries | Avg Citations |
|---|---|---|
| Factual Lookup | 19.3% | 3.40 |
| Info Synthesis | 18.6% | 4.64 |
| Analysis | 10.9% | 4.11 |
| Recommendation | 10.8% | 4.71 |
| Explanation | 10.4% | 4.11 |
| Creative Generation | 9.5% | 2.28 |
| Guidance | 9.1% | 3.68 |
| Other | 8.2% | 2.57 |
| Text Processing | 3.1% | 1.87 |
Source: Searcherries
Earlier Citations Tend to Be More Authoritative
The first source cited in an AI search answer is more likely to come from a high-trust domain (news, encyclopedia, academic, government) — 15.1% of first citations are high-trust, compared to just 7.8% by position 10.
Source: Searcherries
How AI Search Answers Are Formatted
AI search answers make heavy use of rich formatting. 69.7% of answers use bold text, 60.4% contain bullet lists, and roughly a third use headers or numbered lists. Tables appear in 9.5% of answers, while code blocks show up in 5.9% — reflecting the mix of technical and general queries.
Source: Searcherries
Source Diversity per Answer
Among answers that cite at least one source, the average number of unique domains per answer is 4.5. The same website is rarely cited more than once within a single response.
Query and Answer Length
The median query length is just 71 characters — most people keep their AI search prompts short. Answers, on the other hand, average 2,309 characters (roughly 350–400 words). There is a moderate positive correlation between answer length and the number of citations (r = 0.34): longer answers tend to cite more sources.
Trends: What is Changing in AI Search
What search will look like in the next few years is largely shaped by how AI search is evolving right now. Below are key stats on the AI search trends that stand out the most.
- Gartner predicts traditional search engine volume will drop by 25% by 2026 as users shift to AI chatbots.
- AI Overviews are already available in 200+ countries and territories and in 40+ languages.
- About 50% of Google searches already include AI-generated summaries, a figure expected to rise to 75%+ by 2028.
- 69% of users do not click through to news sites when searching for news on Google. Before the launch of AI Overviews, the zero-click rate for these queries was 56%.
- 36% of surveyed users discovered a new product or brand through ChatGPT.
- 77% of users in the U.S. use ChatGPT as a search engine.
- Google users are less likely to click on links when an AI summary appears in the results.
References
- LMArena / Hugging Face. lmarena-ai/search-arena-24k (Hugging Face).
- Mihran Miroyan, Tsung-Han Wu, Logan Kenneth King, Tianle Li, Anastasios N. Angelopoulos, Wei-Lin Chiang, Narges Norouzi, Joseph E. Gonzalez. Search Arena: Analyzing Search-Augmented LLMs (arXiv:2506.05334).
- Mihran Miroyan, Tsung-Han Wu, Logan Kenneth King, Tianle Li, Anastasios N. Angelopoulos, Wei-Lin Chiang, Narges Norouzi, Joseph E. Gonzalez. Introducing the Search Arena: Evaluating Search-Enabled AI (Arena blog).
- STAMFORD, Conn. Gartner Predicts Search Engine Volume Will Drop 25% by 2026, Due to AI Chatbots and Other Virtual Agents (Gartner).
- Hema Budaraju. AI Overviews are now available in over 200 countries and territories, and more than 40 languages. (Google).
- Elizabeth Silliman, Kelsey Robinson, Julien Boudet; Desirae Oppong, Nilay Shah. New front door to the internet: Winning in the age of AI search (McKinsey).
- Similarweb. Report: The Impact of Generative AI on Publishers (Similarweb).
- Adobe Express. How ChatGPT is changing the way we search (Adobe).
- Athena Chapekis, Anna Lieb. Google users are less likely to click on links when an AI summary appears in the results (Pew Research Center).