Perplexity AI is an AI-powered search engine that aims to provide users with accurate, reliable, and source-based answers to their inquiries. Unlike traditional search engines that display a list of links, Perplexity AI generates direct answers with citations from reliable sources. This approach eliminates the need to browse multiple websites, making information retrieval faster and more efficient.

The main features and functions include:

• Direct Answers: Provides concise, fact-based answers to user inquiries.
• Source Attribution: Includes citations for its sources, allowing users to verify the accuracy of the information.
• Natural Language Processing (NLP): Uses NLP to understand user inquiries and determine intent and context.
• Real-time Search Capabilities: Retrieves information from the internet in real-time to provide comprehensive responses.
• Follow-up Questions: Suggests follow-up queries to help users refine their searches.
• Summarization: Generates responses that summarize key findings.
• Advanced Language Models: Utilizes advanced language models like GPT-4 Omni and Claude 3 to deliver intelligent search and discovery in real-time.
• Perplexity Spaces: Allows users to create custom knowledge hubs for specific projects or topics.
• Multimedia Integration: Enables users to upload images, PDF files, or text files as part of their inquiries.

Perplexity AI, Inc. was founded in 2022 by Aravind Srinivas, Denis Yarats, Johnny Ho, and Andy Konvitz. As of June 2025, the company is valued at $14 billion. A free and public version is available, while a paid Pro subscription provides access to more advanced language models and additional features.

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