AI answers from ChatGPT, Claude, Gemini, and Perplexity vary by session and...

https://www.bookmark-step.win/measuring-ai-search-is-a-nightmare-because-answers-aren-t-just-dynamic-they-re

AI answers from ChatGPT, Claude, Gemini, and Perplexity vary by session and location because each interaction draws on different data and regional signals