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Search Foresight: The New Search Reality — AI Citations, GEO, llms.txt & the Zero-Click Surge

Posted on Zero-Click Search | GEO | AI Citations

Henry BramwellHenry Bramwell

Here’s a snapshot of what’s trending:

AI citations favor depth over authority — Content depth and readability now matter more than backlinks or traffic when it comes to being cited by AI engines like ChatGPT and Google AI Overviews. One recent experiment found that AI only cites HTML pages and ignores Markdown files entirely. Source: Position Digital

GEO is non-negotiable — Brands that rank on page one of Google can still be completely invisible to ChatGPT, Claude, and Perplexity. GEO (Generative Engine Optimization) ensures your brand appears inside AI-generated responses, not just in traditional SERPs. Source: Sight AI

New technical standard: llms.txt — Similar to robots.txt, this new file tells large language models how to interact with your site. Along with HTTPS, Core Web Vitals, and structured data, it’s now considered essential for AI engine visibility. Source: Trackingplan

Zero-click searches are accelerating — Google search click-through rates dropped for both paid and organic results between late 2024 and 2025, even when AI Overviews are absent. Consumers increasingly expect the search result to be the answer. Source: eMarketer

ChatGPT referral traffic is highly concentrated — over 30% of all ChatGPT referral traffic goes to just 10 domains, with over 20% going to Google itself, making brand authority and citation-building more critical than ever. Source: Position Digital