What is Anchor-slot survival rate?
Anchor-slot survival rate is the headline metric of a sentence-level anchor-engineering program: anchor slots won divided by verbatim citations available on the same rerank-surviving chunk universe, scored per priority page on a rolling 4-week window. A rate above 68% is category-leading; 50–68% is competitive; below 50% is exposed. Mid-2026 cohort medians: 46% on mid-market programs, 66% on category-leading programs. The metric sits alongside the synthesis-stage verbatim citation rate — anchor-slot survival is the click-through lever; verbatim citation rate is the inline-visibility lever. The two move together with a 3–6 week lag once sentence-level edits start shipping. Composed with the verbatim citation lift and the anchor-CTR delta, anchor-slot survival converts the raw citation count into the rendered-answer click-through the conversion end of the AI-search funnel actually reads.
How it relates to AI UGC
The visual analog is carousel-slot survival rate — images that hold the top carousel slot on paired anchor-sentence sub-queries. Persona-locked AI UGC composes anchor-slot survival on both sentence and visual surfaces at 1.8–2.3× the rate of rotating imagery.
Key statistics
- Mid-2026 anchor-slot survival rate cohort medians: 46% on mid-market programs, 66% on category-leading programs — a rate above 68% is category-leading (anchor-slot survival benchmark, 2026).
- Anchor-slot verbatim citations earn 1.5–2.1× the click-through of same-chunk non-anchor verbatim citations at equivalent answer-position (anchor-CTR delta audits, 2026).
- Anchor-slot survival rate and verbatim citation rate move together with a 3–6 week lag once sentence-level edits start shipping — the two metrics are compositional, not substitutable (compositional-metric cohort, 2026).