Research
Research
Studies of which businesses AI assistants name when people ask for help, measured the way the Stack measures a client: fixed questions, every question asked many times, and a range on every number. Each study publishes its design before it collects an answer.
Quarterly · design published November 2, 2026
Who does AI name?
Which Texas personal injury firms ChatGPT and Perplexity name, in English and Spanish, in Houston, Dallas, San Antonio and Austin. 1,152 answers a quarter. First edition December 7, 2026.
Published October 25, 2026
One AI check against twelve
How far a single ChatGPT or Perplexity check can sit from the truth, and why the Stack asks each question 12 times. Published on The Best SEO Podcast's site.[1]
Corrections
Where mistakes are fixed
A study that names firms will be disputed, and some disputes will be right. Every correction is dated and logged in public, and the page it changed says so. The corrections log
Sources
- The Best SEO Podcast, One AI check against twelve. Figures dated 2026-10-25, from answers collected 12 to 26 September and 1 to 5 October 2026.