THE MATH IS CLEAR: LLMS HAVE FUNDAMENTALLY CHANGED SEARCH

Summary from the TLDR Marketing newsletter

LLM-based search has created a fundamental break from the traditional ranking model because it now generates a single probabilistic answer rather than a list of documents. This shift means classical SEO and LLM search optimize different mathematical objectives, so strong pre-LLM strategies do not guarantee strong visibility in LLM answers. Long pillar pages that perform well in traditional SEO lose retrieval strength in LLM systems because BM25 length normalization and dense embeddings favor short, tightly scoped pages. This change represents the biggest mathematical shift in search since the field began, and it alters which content strategies matter most, even if the core tactics remain the same.