AI models do more than generate answers. They sometimes cite the sources they rely on. A Semrush study of 150,000 citations in June 2025 highlights which domains appear most often in responses from ChatGPT and Perplexity.
View the full infographic: Ranked – The Most Cited Websites by AI Models
Source: Visual Capitalist, June 2025 (based on Semrush data)
Top AI citations:
- Reddit (40.1%) — leading for user-generated experiences
- Wikipedia (26.3%) — structured facts and reference
- YouTube (23.5%) and Google.com (23.3%) — tutorials and general information
- Yelp (21%) and Facebook (20%) — reviews and social input
- Amazon (18.7%) — product details and comparisons
How this compares to Google search
Google search favors authoritative and SEO-optimized pages such as news outlets, official websites, and trusted blogs. AI citations instead lean toward community-driven and experience-based sources like Reddit and Yelp.
This creates a new type of citation index. Google reflects what its ranking algorithm sees as authoritative. AI reflects what models find useful for answering questions. It is less about SEO and more about coverage and conversational value.
The rise of AI SEO
If AI continues to highlight Reddit and other forums, search visibility will evolve into something new. Businesses may soon shift from competing for top positions on Google to competing for citations inside AI responses. This is the beginning of an AI SEO era.
What businesses can do now
- Be present where AI looks: Participate on forums like Reddit, Quora, and industry-specific communities.
- Invest in structured facts: Wikipedia-style clarity, FAQs, and well-organized knowledge increase the chance of being cited.
- Create explainers: Tutorials, how-tos, and walkthroughs perform well in AI citations, especially on YouTube and blogs.
- Focus on credibility: As AI citation habits mature, trusted sources will likely be favored over casual discussion.
Takeaway: The game is shifting from being discoverable on Google to being referenced by AI. Brands that adapt early to this new citation index will shape the future of visibility in the conversational web.
Labels: AI, ChatGPT, Perplexity, AI Citations, Google Search, Semrush Study, Reddit, Wikipedia, YouTube, SEO, AI SEO, AI Trends
Labels: AI, AI Citations, AI SEO, AI Trends, ChatGPT, Google Search, Perplexity, Reddit, Semrush Study, SEO, Wikipedia, YouTube