Perplexity AI is a company founded in August 2022 by Aravind Srinivas along with Denis Yarats, Johnny Ho, and Andy Konwinski. It launched its product before the public release of ChatGPT later that year, and it markets itself as an "answer engine" rather than a conventional search engine or open-ended chatbot: queries are answered with a synthesized, conversational response generated by a Large language model but grounded in live web results retrieved for that query, with inline citations linking each claim back to a source page, an approach closely related to Retrieval-augmented generation.
Product and approach
Perplexity's core interface lets users ask natural language questions and receive a direct answer with linked sources, rather than the list of ranked links returned by traditional search engines such as Google. The company built or licensed its own underlying models for some tasks while also offering users a choice of underlying models including those from OpenAI, Anthropic, and others, and it expanded into a standalone Comet web browser and enterprise search products. Because the product is explicitly optimized to be cited as a source by an AI answer rather than merely ranked as a search result, Perplexity became an early commercial example of the practices later formalized as Generative engine optimization.
Publisher tension
Perplexity's approach of summarizing and citing news and other publisher content, sometimes closely paraphrasing the original text, drew criticism and legal threats from media organizations including the New York Times, Forbes, and News Corp's Dow Jones, who argued the service used their journalism without adequate compensation or authorization, echoing broader industry fights captured in the AI copyright lawsuits wave against AI companies. Perplexity responded by launching a publisher revenue-sharing program and striking licensing partnerships with some outlets, while continuing to face accusations, including from Cloudflare, that it circumvented robots.txt crawling restrictions, which the company disputed.
Funding and reception
Perplexity raised successive funding rounds from investors including Jeff Bezos, Nvidia, and SoftBank, reaching a valuation reported above nine billion dollars by 2025, reflecting investor interest in AI-native alternatives to traditional search as usage of chat-based information tools grew. Commentators have debated whether answer engines like Perplexity represent a genuine threat to incumbent search advertising businesses or a complementary niche, and the company's growth has been cited as both evidence of a broader shift in how people find information online and an accelerant of tensions between AI companies and the publishers whose content trains and grounds their models.