The AI Overview Index
How much of Google now answers itself, measured on a fixed corpus every week.
Measured 2026-W36 · 2026-08-31 · google.com, gl=us
The index
A query counts as covered when the response carries an AI Overview block. Google omits the key entirely when it renders nothing, so this is a presence test rather than an inference from an empty value.
By search intent
| Intent | Queries | AI Overview |
|---|---|---|
| commercial | 1,264 | 37.5% |
| informational | 1,995 | 67.8% |
| comparison | 537 | 40.2% |
| navigational | 194 | 15.5% |
| support | 195 | 28.2% |
The spread runs from 15.5 percent on navigational queries to 67.8 percent on informational ones. Intent predicts an overview better than topic does.
By topic
The measurement behind it
A fixed corpus of 4,185 queries, run once a week from the United States through one endpoint, stored and never re-fetched. 82,620 observations across 12 weeks so far. The method is written out in full on how we measure.
curl --request GET \
--url 'https://serpens.p.rapidapi.com/api/v1/search_ai_overview?q=best%20search%20apis&gl=us&hl=en&format=json' \
--header 'x-rapidapi-host: serpens.p.rapidapi.com' \
--header 'x-rapidapi-key: YOUR_KEY'Reproduce any figure here
Free tier, no card. Same endpoint, same parameters — the corpus is the only thing you would need to supply.