Definition: Perplexity

An AI chatbot and search engine developed by Aravind Srinivas, Denis Yarats, Johnny Ho and Andy Konwinski. Released in 2022, Perplexity uses various AI language models and Microsoft's Bing search engine. The free service uses OpenAI's GPT 3.5, while paid versions can access models from OpenAI, Anthropic, Google, Meta and DeepSeek. Pro and Enterprise Pro users can also include their company data uploaded in formats such as Word and PDF.

Shopping, Finance and Perplexity Assistant
In 2024, a shopping hub was added to supply product information, and company stock quotes and financials were added. In 2025 and also available for Android and iOS, the Perplexity Assistant added enhancements to the Web search.