Perplexity AI

Perplexity AI is a chat-based search engine that uses large language models (LLMs) to answer questions. It provides answers and cites sources from the web. The company behind it, Perplexity AI, Inc., is based in San Francisco, California. Perplexity was set up in 2022 by four engineers: Aravind Srinivas, Andy Konwinski, Denis Yarats, and Johnny Ho. Here's a bit about each of them:

• Aravind Srinivas, the CEO, used to work as an AI researcher at OpenAI. • Andy Konwinski, part of the founding team at Databricks, brings expertise in back-end systems. • Denis Yarats, the CTO, was an AI research scientist at Meta. • Johnny Ho, the CSO, has worked as an engineer at Quora and later as a quantitative trader on Wall Street.