For two decades, backlinks were the currency of digital visibility. But AI systems do not evaluate brands the way Google's PageRank does. An Ahrefs study of 75,000 brands found that branded web mentions correlate about three times more strongly with visibility in Google's AI Overviews than backlinks do. If your digital strategy still revolves around link building alone, you are probably under-investing in the signal that matters most for AI search.
The data: mentions vs. backlinks for AI citations
In 2025, Ahrefs published a study of 75,000 brands measuring which signals correlate with being mentioned in Google's AI Overviews. A follow-up extended the analysis to ChatGPT and Google AI Mode.
The results upended conventional SEO wisdom. Branded web mentions showed a correlation of 0.664 with AI Overview visibility, against 0.218 for backlinks. In the follow-up, YouTube mentions came out highest, at about 0.737. The authors stress that correlation does not mean causation: well-known brands both get talked about and get cited.
| Signal | Spearman correlation with AI visibility |
|---|---|
| YouTube mentions (ChatGPT, AI Mode, AI Overviews) | about 0.737 |
| Branded web mentions (AI Overviews) | 0.664 |
| Backlinks (AI Overviews) | 0.218 |
The pattern is unmistakable. AI systems prioritize brands that exist in the conversational web (platforms where real people discuss, recommend, and reference businesses) over brands that simply accumulated links through traditional SEO tactics.
Why AI systems favor mentions over links
To understand this shift, you need to understand how large language models build their knowledge of the world. These models are trained on vast corpora of text. During training, they learn entity associations: which brands appear in which contexts, how frequently they are discussed, and what sentiment surrounds them.
A backlink is a machine-level signal: a hyperlink in HTML that a crawler can follow. A brand mention, by contrast, is a semantic signal. When someone on Reddit writes "We switched to Notion for project management and it transformed our workflow," that sentence creates an entity association the LLM internalizes during training. The brand, the category, and the sentiment are all encoded into the model's weights.
Google treats a backlink as a vote of confidence from one domain to another. LLMs treat a mention as evidence that a brand exists within a specific knowledge domain. The more contexts in which a brand appears (and the more authoritative those contexts), the stronger the entity signal becomes.
This is why a brand discussed across Reddit threads, YouTube videos and Wikipedia citations is likely to be better known to a model than a brand with many backlinks but no conversational presence. The former is embedded in the text the model learned from; the latter may barely exist in it.
Platform-by-platform strategy
YouTube (correlation: 0.737)
YouTube shows the strongest correlation with AI visibility, and for good reason. YouTube transcripts are a major component of LLM training data, and video content generates rich, contextual brand mentions that are difficult to fabricate at scale.
Practical steps for SMEs:
- Create educational content in your domain. A 10-minute video explaining a concept in your industry, with your brand naturally referenced, generates training-quality text via automated transcripts.
- Appear on other channels. Guest appearances on industry podcasts and YouTube channels generate third-party mentions, more valuable than self-published content because they represent independent endorsement.
- Optimize video descriptions with your brand name, services, and location. These text fields are crawled and indexed by both search engines and AI systems.
- Encourage review and comparison content from customers or partners. Third-party video mentions carry higher entity weight than first-party content.
- Use consistent brand naming in speech. When you say your brand name clearly in a video, it appears in the auto-generated transcript, which becomes training data.
Reddit is one of the places people go for candid recommendations, and both Google and AI assistants surface its discussions frequently. When someone asks "What's the best CRM for small businesses?" on r/smallbusiness, the most upvoted answers can end up shaping what AI systems say about the category.
Practical steps for SMEs:
- Participate authentically in relevant subreddits. Answer questions, share expertise, and reference your brand only when genuinely relevant. Reddit communities detect and punish overt self-promotion.
- Monitor brand mentions with tools like Google Alerts, Mention, or Brand24. When someone discusses your category, that is an opportunity to provide value and earn organic mentions.
- Create an official brand account and use it for transparent engagement: AMAs (Ask Me Anything sessions), product announcements, support responses.
- Build reputation in niche subreddits relevant to your industry before participating in larger, more competitive communities.
- Focus on being helpful, not promotional. A comment that solves someone's problem and happens to mention your product carries far more weight than a sales pitch.
Wikipedia
Wikipedia remains one of the most influential sources for entity recognition. If your brand has a Wikipedia page, or is cited as a source in relevant articles, models have a strong, well-structured reference to identify you.
Practical steps for SMEs:
- Do not create your own Wikipedia page. Wikipedia has strict notability guidelines and conflict-of-interest rules. Self-created pages get flagged, challenged, and deleted, sometimes damaging your reputation in the process.
- Build notability first. Get covered by reliable, independent sources: press outlets, industry publications, research papers, and academic citations. These become the references that support a Wikipedia page created by a neutral editor.
- Contribute to relevant Wikipedia articles by adding well-sourced information about your industry, not about your own brand. This builds your understanding of Wikipedia norms and may lead to organic connections.
- Ensure your Wikidata entry is complete if your brand qualifies. Wikidata is a structured knowledge base used by search engines and other knowledge graphs. Properties like industry, headquarters location, founding date and official website all help systems identify your brand without ambiguity.
LinkedIn's role in AI visibility is growing, particularly for B2B brands. Company pages, employee profiles, published articles, and post engagement all contribute to a brand's entity footprint in ways that LLMs can detect during training and retrieval.
Practical steps for SMEs:
- Optimize your company page with complete descriptions, services, specialties, and consistent brand naming across all fields.
- Encourage employee advocacy. When team members share content mentioning the company, it multiplies entity signals across the platform.
- Publish LinkedIn articles on topics in your domain. These long-form pieces are crawled by AI systems and generate category-specific entity associations.
- Engage with industry conversations. Comments, reactions, and shares on relevant posts contribute to your brand's presence in LinkedIn's data ecosystem, data that feeds both traditional search and AI training pipelines.
- Connect company and personal brands. Founder and team member profiles that reference the company create a web of entity relationships that strengthens overall brand recognition.
Entity recognition and knowledge graphs
Underneath AI visibility lies entity recognition. When an LLM encounters your brand name, it determines: Is this a known entity? What category does it belong to? What attributes does it have? What is its relationship to other entities?
Google's Knowledge Graph, Wikidata, and the implicit knowledge graphs built during LLM training all map entities to attributes and relationships. A brand that exists in these graphs with rich, consistent attributes is far more likely to be cited by AI systems. The key entity signals include:
- Consistent naming. Use the exact same brand name across all platforms. "Numinam" everywhere, not "Numinam Agency" on LinkedIn, "numinam.com" on Reddit, and "The Numinam Team" on YouTube.
- Category association. Ensure your brand consistently appears in discussions about your category (e.g., "web agency Brussels," "AI-optimized websites," "conversion optimization Belgium").
- Attribute richness. The more structured attributes an entity has (location, services, founding date, team size, specialties, pricing), the stronger the entity signal in knowledge graphs.
- Relationship mapping. Your brand's connections to other known entities (clients, partners, platforms, technologies, industry organizations) strengthen its position in knowledge networks.
Measuring AI visibility and entity presence
Traditional SEO provides clear metrics: rankings, traffic, Domain Rating. Entity presence is harder to measure but not impossible:
- Query AI systems directly. Ask ChatGPT, Perplexity, Claude, and Gemini questions in your domain. Does your brand appear? In what context? With what accuracy? Track this monthly with a standardized set of 10 to 20 queries.
- Monitor brand mentions across platforms using tools like Brand24, Mention, or Google Alerts. Track volume, sentiment, and platform distribution over time.
- Check your Google Knowledge Panel. Search your brand name on Google. If a Knowledge Panel appears on the right side of results, Google recognizes you as an entity. If it does not, your entity presence needs focused work.
- Audit Wikidata. Search for your brand on wikidata.org. If an entry exists, verify it is complete and accurate. If it does not exist, assess whether your brand meets notability criteria.
- Track platform-specific mentions independently. YouTube mention count, Reddit thread appearances, LinkedIn article engagement, and Wikipedia citations should each be tracked as individual KPIs. These are now more predictive of AI visibility than aggregate backlink counts.
- Compare against competitors. Run the same AI queries for your competitors. Note who gets cited, in what context, and with what level of detail. This competitive analysis reveals gaps in your entity presence.
The overlap problem: each AI system cites different sources
Analyses comparing ChatGPT with Google's AI answers regularly find that they cite different domains for the same query. Each system has its own sources and its own citation logic.
For businesses, this has a critical implication: optimizing for one AI system does not guarantee visibility in others. A diversified entity presence, spread across multiple platforms and contexts, is the only reliable strategy for broad AI visibility. You cannot put all your entity-building effort into a single platform and expect comprehensive coverage.
This also connects to the B2A2C model (Business to Agent to Consumer). When AI agents evaluate businesses on behalf of consumers, they draw on their own training data and real-time search capabilities. A brand that only exists in one AI system's knowledge base misses the agents powered by others.
A practical 90-day roadmap
Building entity presence is not an overnight project. Here is a realistic 90-day roadmap for an SME starting from a low entity baseline:
Days 1 to 30 (Foundation):
- Audit current entity presence: query all major AI systems, check Knowledge Panel, review Wikidata.
- Standardize brand naming across all existing platforms and profiles.
- Complete and optimize LinkedIn company page and key employee profiles.
- Identify 5 to 10 relevant subreddits and begin authentic participation.
- Plan first 4 YouTube videos (educational content in your domain).
Days 31 to 60 (Expansion):
- Publish first 2 YouTube videos with optimized titles, descriptions, and transcripts.
- Publish 2 LinkedIn articles on topics where your brand has genuine expertise.
- Actively participate in 3 to 5 Reddit threads per week, providing genuine value.
- Pitch guest appearances on 2 to 3 industry podcasts or YouTube channels.
- Begin pursuing press coverage or industry publication features to build Wikipedia notability.
Days 61 to 90 (Acceleration):
- Publish remaining YouTube videos and analyze transcript quality for entity mentions.
- Re-query all AI systems with the same standardized query set. Measure improvements.
- Review and update Wikidata entry if applicable.
- Establish a monthly monitoring cadence for all entity metrics.
- Identify the next quarter's priority platforms and content themes based on data.
From backlinks to brand signals: the strategic shift
None of this means backlinks are irrelevant. They still drive Google organic rankings, and pages that rank well in Google remain a major source of AI Overview citations. But for AI visibility specifically, the data points to brand mentions as the stronger signal.
For SMEs with limited resources, this shift is actually encouraging news. Building brand mentions on YouTube, Reddit, and LinkedIn does not require the expensive outreach campaigns and agency retainers that traditional link building demands. It requires consistent, authentic participation in the conversations that matter in your industry, something small teams can do effectively if they commit to it.
The businesses most likely to come out ahead in AI visibility are those building entity presence, not just domain authority: creating content that gets talked about, taking part in the communities where their audience gathers, and keeping their brand data structured and consistent wherever AI systems look.
Key takeaways
- Branded web mentions correlate about three times more strongly with AI Overview visibility than backlinks, according to Ahrefs' study of 75,000 brands. It is a correlation, not proof of cause.
- YouTube mentions (about 0.737) are the strongest signal Ahrefs measured, ahead of branded web mentions (0.664). Backlinks come in at 0.218.
- Different AI systems often cite different sources for the same query: a diversified, multi-platform presence is the safer strategy.
- Entity recognition (how AI systems identify and categorize your brand) is the underlying mechanism. Consistent naming, category association, and attribute richness drive it.
- SMEs can compete by investing in authentic platform participation rather than expensive link-building campaigns.
- Measure entity presence directly by querying AI systems monthly, monitoring platform mentions, and checking your Knowledge Panel and Wikidata entry.
- Follow a structured 90-day roadmap to build entity presence systematically rather than sporadically.