Perplexity AI is a private San Francisco company best known for its answer engine, which gives cited written answers instead of a page of links. Since 2025 it has expanded into an AI browser (Comet) and an autonomous agent (Computer), and it serves consumers, enterprises and developers through the Sonar API. The company is headquartered in San Francisco, California. Perplexity AI was founded in August 2022 in San Francisco, California, by Aravind Srinivas, Denis Yarats, Johnny Ho, and Andy Konwinski to reinvent internet search into an interactive conversational answer engine with verified inline source citations.
Perplexity makes money mainly from subscriptions. The free tier is limited. Pro ($20 a month) and Max (a higher tier that includes the Comet browser's advanced features) add more queries and access to frontier models. Enterprise Pro and Enterprise Max are sold per seat to companies and add security controls and search over internal files. Developers pay by usage for the Sonar API. Since February 2026 the Computer agent has added usage-based charges on top of subscriptions. Distribution deals with telecom carriers, device makers such as HP, and payment partners bring in users through bundled plans. Perplexity has also tested ads and run revenue-sharing programs for publishers.