# What is Perplexity?

> Perplexity is an AI search engine that answers questions with live web search and always shows its sources.

_UK and US · Updated 2026-10-27 · Akkrev, https://akkrev.com/glossary/perplexity/_

**Perplexity** is an AI answer engine. It searches the web for each question, writes an answer and lists the sources it used.

## Why it's useful to businesses

Its citations show which sites shape AI answers about your area. See [how Perplexity picks sources](https://akkrev.com/ai-seo/how-perplexity-chooses-sources/).

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