Ahrefs (863k keywords / 4M URLs) — page-1 overlap with AI Overview citations dropped from 76% (Jul 2025) to 38% in 2026

Summary

Claim: A parallel Ahrefs study (863k keywords / 4M URLs) puts the page-1 overlap with AI Overview citations at 38%, down from 76% in July 2025.

Source: ahrefs.com — 2026.

Confidence: Industry-consensus (consistent direction with BrightEdge and Moz).

Caveat: Ahrefs is a vendor; large-N keyword sample is internal.

Why this matters for Candid: The trajectory (76% → 38% in 6–7 months) is the more important finding than either single level. The two systems are diverging fast, not converging.