Mentionable Index
AIO
Which sources do AI engines cite in AI tools & assistants?
The index lists 244 domains cited in AI tools & assistants. youtube.com leads with 4,107 citations, or 10% of those domains' citations.
244
Domains cited
41,448
Citations measured
10%
youtube.com share
17%
Top 10 share
AI tools & assistants ranking
Ranked by number of citations recorded over the period.
| # | Domain | Citations |
|---|---|---|
| 201 | 4 | |
| 202 | 4 | |
| 203 | 4 | |
| 204 | 4 | |
| 205 | 4 | |
| 206 | 4 | |
| 207 | 4 | |
| 208 | 4 | |
| 209 | 4 | |
| 210 | 3 | |
| 211 | 3 | |
| 212 | 3 | |
| 213 | 2 | |
| 214 |  amazon.com | 2 |
| 215 | 2 | |
| 216 | 2 | |
| 217 | 2 | |
| 218 | 2 | |
| 219 | 2 | |
| 220 | 2 | |
| 221 | 2 | |
| 222 |  amazon.fr | 1 |
| 223 | 1 | |
| 224 | 1 | |
| 225 | 1 | |
| 226 | 1 | |
| 227 | 1 | |
| 228 | 1 | |
| 229 | 1 | |
| 230 | 1 | |
| 231 | 1 | |
| 232 | 1 | |
| 233 | 1 | |
| 234 | 1 | |
| 235 | 1 | |
| 236 | 1 | |
| 237 | 1 | |
| 238 | 1 | |
| 239 | 1 | |
| 240 | 1 | |
| 241 | 1 | |
| 242 | 1 | |
| 243 | 1 | |
| 244 | 1 |
Methodology
AIO21,727 AI responses analyzed across AI tools & assistants, on 8 engines, from February 2026 to September 2026. Citations come from the prompts tracked on Mentionable.
Latest data point: . Updated weekly.
Full methodologyAnd on your own prompts?
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