Aravind Srinivas
Perplexity AI, Inc., or simply Perplexity, is an American privately held software company offering a web search engine that processes user queries and synthesizes responses. Perplexity products use large language models and incorporate real-time web search capabilities, providing responses based on current Internet content, citing sources used. Its real-time search engine (API service) is called Sonar and is based on Meta's Llama model. A free public version is available, while a paid Pro subscription offers access to more advanced language models and additional features.
Perplexity AI, Inc., was founded in August 2022 by Aravind Srinivas, Denis Yarats, Johnny Ho, and Andy Konwinski. As of September 2025, the company was valued at US$20 billion.
Perplexity AI has faced legal scrutiny over allegations of copyright infringement, unauthorized use of content, and trademark issues from several major media organizations, including the BBC, Dow Jones, and The New York Times. According to separate analyses by Wired and, later, Cloudflare, Perplexity uses undisclosed web crawlers with spoofed user-agent strings to scrape the content of websites that prohibit or explicitly block web scraping.
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