VercatusMeasurement
How an effect is observed rather than assumed: which data source shows what, how late it arrives, and what it cannot tell you.
- 10 published entries
- A6 grade A
- B2 grade B
- C1 grade C
- D1 grade D
- earliest re-check due 2027-03
A grade describes where an entry's sources come from, not how likely a change is to work. How grades are used
- Aofficial documentation or a standardR-111
Bing AI performance
Re-check due 2027-03 - Aofficial documentation or a standardR-115
Evidence for whether a page is indexed
Re-check due 2027-06 - Aofficial documentation or a standardR-112
Grounding source attribution
Re-check due 2027-03 - Aofficial documentation or a standardR-110
Search Console as first-party search evidence
Re-check due 2027-06 - Aofficial documentation or a standardR-114
Search Console completeness and attribution limits
Re-check due 2027-06 - Aofficial documentation or a standardR-007
What Search Console reports about AI visibility
Re-check due 2027-03 - Bpeer-reviewed or a large controlled studyR-113
Citation support and completeness
Re-check due 2027-06 - Bpeer-reviewed or a large controlled studyR-109
Separating observed changes from causal attribution
Re-check due 2027-09 - Creputable industry data or observationR-108
Citation tracking
Re-check due 2027-03 - Dpractitioner consensusR-054
Why AI-influenced visits can be hard to attribute
Re-check due 2027-03
Other topics
- Access and crawlers18
- Agent readiness27
- Answer engines25
- Commercial12
- Content11
- Entities8
- Languages and regions7
- Performance13
- Policies13
- Retrieval9
- Technical29
- Trust and provenance5
Every entry is searchable together in the full knowledge base. Vercatus plays cite entries by id. How the base is curated.