Here is the summary (82 words): Measuring AI search visibility is difficult...

https://wiki-wire.win/index.php/What_is_the_Real_Difference_Between_AI_Rank_Tracking_and_AI_Mention_Tracking%3F

Here is the summary (82 words): Measuring AI search visibility is difficult because LLM outputs are inherently non-deterministic and suffer from massive geo variability