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The AI company Perplexity is complaining their bots can't bypass Cloudflare's firewall
(www.searchenginejournal.com)
This is a most excellent place for technology news and articles.
They do it this way in case the data changed, similar to how a person would be viewing the current site. The training was for the basic understanding, the real time scraping is to account for changes.
It is also horribly inefficient and works like a small scale DDOS attack.