A bit on the “scammy” side (and a lack of privacy protection):
https://en.wikipedia.org/wiki/Perplexity.ai
https://www.wired.com/story/perplexity-is-a-bullshit-machine/
https://rknight.me/blog/perplexity-ai-is-lying-about-its-user-agent/
https://www.fastcompany.com/91144894/perplexity-ai-ceo-aravind-srinivas-on-plagiarism-accusations
https://www.wired.com/story/aws-perplexity-bot-scraping-investigation/
https://www.perplexity.ai/hub/faq/what-data-does-perplexity-collect-about-me
The Perplex downside. Thanks!