Most marketers are optimizing for where they rank. The more pressing question now is whether they show up at all when AI generates the answer.
Google AI Overviews, ChatGPT, and Perplexity do not pull citations evenly from across the web. Research from Semrush analyzing over 230,000 prompts across three major LLMs found that a small, consistent group of third-party domains dominates AI citations. If your brand isn't present in that ecosystem, it isn't present in the answer layer, regardless of your search rankings.
The Domains LLMs Cite Most
Across ChatGPT, Google AI Mode, and Perplexity, the most frequently cited domains include Reddit, LinkedIn, YouTube, Wikipedia, and Quora. High-authority publishers such as The New York Times, Forbes, and Business Insider also appear consistently across categories and industries.
Their presence reflects what AI systems treat as credible: platforms with massive reach, structured content, and deep crawl history. Two categories dominate overall: community platforms and authoritative publishers. That pattern is not accidental.
Why These Platforms Win Citations
Question-answer structure. Reddit and Quora are built around explicit questions. Their format closely mirrors how users search and how LLMs process prompts, making content easy to retrieve and summarize.
Aggregated perspectives. Community threads surface multiple viewpoints, with engagement signals that reinforce credibility. Models trained on web-scale data learn from repeated, consistent discussions. Consensus becomes a signal.
Authority and crawl depth. Wikipedia and major publishers like The New York Times and Forbes are deeply represented in training data and retrieval indexes. Their structured, standardized content improves extractability. They are cited often in part because they have always been cited often. Brands that earn mentions in these publications benefit from that same authority signal.
Optimizing for AI Visibility on These Platforms
If these are the domains AI systems trust, optimization has to extend beyond your website. The goal is intentional presence on the platforms models already retrieve from.
Reddit is particularly strong in technology, SaaS, finance, health, and consumer product categories. For B2B and SaaS brands, identify the subreddits where buyers research and compare tools. Contribute detailed, non-promotional responses to evaluation threads. Encourage participation from founders or subject matter experts who can speak from experience.
For consumer brands, monitor product recommendation threads and support authentic, long-form experiential responses. Reddit content that ranks in Google is highly likely to be retrievable by AI systems. The objective is informed participation, not link placement.
Quora
Quora performs well on definitional queries and comparisons. Publish comprehensive answers that mirror high-intent questions, structured with clear logic and concise explanations. Industries with complex products such as fintech, cybersecurity, health, and B2B software benefit most here. The format aligns directly with how AI systems extract and present summaries.
LinkedIn citations appear increasingly in AI outputs for professional and business topics. For agencies and B2B brands, publish authoritative posts that explain frameworks, trends, and decisions. Long-form posts that answer strategic questions directly tend to perform well. Strong personal and brand entity presence on LinkedIn improves retrievability for business-focused queries.
YouTube
YouTube dominates tutorial and review intent. For software, education, and product categories, publish comparison videos and detailed walkthroughs with titles that mirror explicit search queries. Transcripts provide structured text that can be retrieved and summarized. Optimizing titles and descriptions for question-based queries increases inclusion probability.
Digital PR and Publisher Mentions
Getting mentioned in publications like The New York Times, Forbes, and Business Insider is no longer just a brand awareness play. These domains carry significant weight in how AI systems assess entity credibility. For competitive industries, prioritize original research, data studies, and expert commentary to generate coverage. Authoritative citations increase the probability that AI systems treat your brand as a credible entity within a category.
Building a GEO Plan by Industry
The strategy is not to be everywhere. It is to be present where your industry's conversations already influence AI answers.
- B2B SaaS: Reddit comparisons, LinkedIn authority content, YouTube walkthroughs, and review platform presence.
- Ecommerce and consumer brands: Reddit product threads, YouTube reviews, and publisher coverage.
- Finance and health: Authoritative citations, structured Q&A content, and compliance-aligned educational material.
Start by identifying which domains appear most often when AI answers questions in your category. That tells you where to focus.
From Ranking to Citation
Traditional SEO optimized for position. Generative Engine Optimization focuses on inclusion: being part of the source set models retrieve and summarize.
The right questions for marketers to ask now:
- Where do AI systems source answers in our category?
- Which third-party domains dominate those citations?
- How is our brand represented across those platforms?
The Semrush data is clear: LLMs rely on a concentrated group of domains, and that group is not static. Reddit's citation share dropped significantly in September 2025 after a period of heavy reliance. AI visibility is not just a new opportunity. It is also a new risk surface for brands that have ignored how models represent them.
Search visibility is expanding beyond your website. Brands that build intentional citation presence across trusted domains now will have structural advantage as AI-generated answers continue to grow.
If you want to understand where your brand currently stands in AI-generated answers, Cited tracks citation presence across LLMs and helps identify the gaps.