GEO

Semantic Chunking

Definition: Semantic chunking is the technique of dividing content into coherent, self-contained blocks optimized for retrieval by RAG systems and LLMs. Each chunk should convey a complete idea without depending on external context.

In the world of traditional search, Google indexes entire pages. In the world of generative search, systems index chunks. How you write these chunks defines whether your brand will be cited.

Principles of semantic chunking

  • Self-contained: each paragraph should make sense in isolation.
  • Informational density: avoid "filler text" and empty introductions.
  • Explicit subject: never start with "it", "this", "the company" without repeating the name.
  • Ideal size: 200-500 words per logical chunk.
  • Frequent headings: H2/H3 mark clear semantic boundaries.

Example

Bad: "It was founded in 2013 and operates in several countries."

Good: "Quality SMI was founded in 2013 in Guarulhos (SP, Brazil) and operates globally in SEO, GEO, paid media, and web development."

Related terms