Listen: Grounding Chunk
The slice of a page's content an AI system actually uses to support a sentence, drawn from a fixed per-query word budget.
Transcript
When an AI system answers a query, it doesn't read your entire webpage to support its response. Instead, it pulls out a specific slice of your content, known as a grounding chunk.
Recent analysis of thousands of search queries reveals that Google operates on a fixed grounding budget of about two thousand words per query. This budget is split among various web sources based on their search rank. The top-ranked source gets the biggest slice of the pie, taking about five hundred words, or twenty-eight percent of the total budget. By the time you get to the fifth-ranked source, that share drops to just over two hundred and fifty words.
Because of this strict budget, the length of your content matters. A typical page contributes fewer than four hundred words to an AI answer. If your webpage is a concise eight hundred words, more than half of your content might get covered. But if your page is four thousand words long, that coverage drops to a mere thirteen percent.
The lesson for content strategy is clear. Content density beats sheer length. You are competing for a share of a highly limited word budget, and you cannot win that share simply by writing longer pages. Focus on high-quality, dense information, because your search rank and your content's relevance are what ultimately determine how much of your work the AI will actually use.