AI Visibility Index: the sites ChatGPT, Perplexity, Gemini, Google AI Mode and AI Overviews cite
Where does AI get its answers?
AI Peekaboo sampled 113,802 AI answers to questions like this one, across 11 categories.
Gentle ways to recover from back pain without medication?
Sites AI cites most, across all categories
- reddit.com17%
- youtube.com11%
- facebook.com8%
- linkedin.com6%
- quora.com3%
Categories
Pick a category
The category-specific sites AI cites most, as a share of answers in AI Peekaboo's sample. General platforms like Reddit and YouTube show up in every category, so they're listed separately below.
Home services
Top category sites
- thisoldhouse.com11.3% of answers
- angi.com10.0% of answers
- homedepot.com8.8% of answers
Healthcare & staffing
Top category sites
- pmc.ncbi.nlm.nih.gov7.3% of answers
- mayoclinic.org3.0% of answers
- goodrx.com2.7% of answers
Travel & hospitality
Top category sites
- tripadvisor.com4.2% of answers
- cntraveler.com2.4% of answers
- businessinsider.com1.6% of answers
SaaS & software tools
Top category sites
- zapier.com8.2% of answers
- gartner.com3.9% of answers
- g2.com3.8% of answers
Legal
Top category sites
- bestlawyers.com6.2% of answers
- americanbar.org5.5% of answers
- justia.com5.0% of answers
Education & training
Top category sites
- coursera.org9.6% of answers
- classcentral.com2.5% of answers
- pmc.ncbi.nlm.nih.gov2.2% of answers
Finance & insurance
Top category sites
- cnbc.com3.3% of answers
- investopedia.com2.5% of answers
- finance.yahoo.com2.1% of answers
Marketing & SEO agencies
Top category sites
- clutch.co6.1% of answers
- webtonic.io5.0% of answers
- designrush.com3.8% of answers
E-commerce & retail
Top category sites
- amazon.com5.2% of answers
- nytimes.com2.8% of answers
- goodhousekeeping.com2.8% of answers
Real estate
Top category sites
- zillow.com3.4% of answers
- realtor.com2.1% of answers
- redfin.com1.6% of answers
Dental
Small sampleTop category sites
- realdentalcosts.com5.2% of answers
- ada.org4.5% of answers
- pmc.ncbi.nlm.nih.gov3.1% of answers
Small sample: 921 answers sampled.
Across categories
The sites AI cites everywhere
Domains cited most across all categories, as a share of every answer in AI Peekaboo's sample.
| # | Site | Type | All answers | In top 15 of 11 categories |
|---|---|---|---|---|
| 1 | reddit.com | Forum / UGC | 17.3% | 11 |
| 2 | youtube.com | Video | 11.4% | 11 |
| 3 | facebook.com | Forum / UGC | 8.3% | 11 |
| 4 | linkedin.com | Directory / marketplace | 5.7% | 8 |
| 5 | quora.com | Forum / UGC | 3.3% | 9 |
| 6 | google.com | Search / big tech | 2.8% | 8 |
| 7 | forbes.com | Publisher / media | 2.4% | 6 |
| 8 | instagram.com | Forum / UGC | 2.0% | 7 |
| 9 | indeed.com | Directory / marketplace | 2.0% | 2 |
| 10 | pmc.ncbi.nlm.nih.gov | Gov / edu / health authority | 1.7% | 4 |
How this index is built
113,802 AI answers to buyer-style questions, 2026-09-10 to 2026-10-10.
- The questions are buyer-style questions tracked by AI Peekaboo users, answered between 2026-09-10 and 2026-10-10. Branded questions and questions that named a place are excluded.
- Each category is a random sample of at most 15,000 answers, and any single question set above 30% of a category was down-sampled. Categories are keyword-based topic buckets.
- A site or brand shows only when it was seen across at least 3 independent question sets.
- Categories under 2,000 answers are marked Small sample.
- Totals and shares include 247 answers from 2 other AI assistants. Model columns show the 5 main models.
