HOW BIG ARE GOOGLE'S GROUNDING CHUNKS?

Summary from the TLDR Marketing newsletter

Google uses a fixed grounding budget of about 2,000 words per query, and page length does not increase that limit. It splits this budget by relevance rank, where the #1 source gets about 531 words or 28% and the #5 source gets about 266 words or 13%. Most pages receive about 377 words, and 77% of pages fall between 200 and 600 words selected. Coverage drops as pages get longer, since pages over 2,000 words average about 13% coverage and grounding plateaus near 540 words. Concise and dense content is more effective than long pages.