Perplexity

basicwidespread

Perplexity is an AI-powered answer engine that formulates responses to your questions using up-to-date web sources and shows where it obtained its claims.

In plain terms

Perplexity is an American company and its main product: an 'answer engine'. While a traditional search engine gives a list of links, this one answers your question in a few paragraphs and marks with numbered references which sentence comes from which website.

It is like a fast librarian. It does not say 'look on the third shelf' but flips through the books itself, summarizes the essence, and places footnotes so you can check.

Most chatbots can now search the web, so the difference is smaller than before. Perplexity, however, is built on this from the start: it compiles every answer from fresh web sources and highlights citations. This makes it good for daily news, product comparisons, quick orientation, and allows further questioning like a conversation.

The company no longer offers just a search engine: it has a mode for longer research and its own browser named Comet, where an agent clicks on your behalf, fills out forms, or compares pages.

How it works

You enter your question in everyday language, even as a full sentence; the system then generates multiple search queries from it.
These gather fresh results from the web and select key details from the pages deemed most relevant.
A large language model formulates the answer from the collected text fragments. Perplexity uses its own models as well as those of other companies, such as OpenAI, Anthropic, and Google.
Numbered source references are added next to the response sentences, allowing you to view the original page with a single click.
For more complex tasks, the research mode or the agent searches, reads, and refines over multiple rounds before presenting the result to you.

An everyday example

You want a heat pump but don't know the selection criteria. You ask Perplexity and receive a summary of key points alongside links to articles and tests. Verify important claims on the referenced sites.

Who is affected

everyoneFor those who want to get informed quickly, it provides a ready, sourced answer instead of browsing links.

parent, student, teacherIt is a good starting point for homework and research, but the provided sources must be read; accepting the summary is not enough. → Education & Family

marketerIf people ask an answer engine, it matters whether your brand appears in the answer and among the cited sources. → Marketing

employeeIt can save hours in market research, background material gathering, and quick fact-checking. → Work & HR

A common misconception

MythIf a source is cited alongside the answer, the statement is certainly true.

In realityThe reference only shows where the system worked from. The model can misunderstand or inaccurately summarize the source, and the source itself can be wrong.

Limits and risks

It can err and fabricate details; therefore, always verify the original source before making healthcare, legal, or financial decisions.
The quality of the answer depends on the websites found: a weak or biased source yields a weak or biased summary.
On Hungarian-language and local topics, it works from fewer sources of more mixed quality than in English.
Several publishers have sued the company over the use of their content, and an agent acting on your behalf also raises data protection and security issues.

Similar, but not the same

Perplexity (metric) – Perplexity is the professional metric for language models measuring how "surprised" a model is by a text. The company name is the same word, but the product and the metric are two separate things.
ChatGPT – ChatGPT is a general conversational assistant with search capabilities, whereas Perplexity is built specifically for sourced web responses.
Traditional search engine – Traditional search engines rank links that you must read through, while Perplexity reads them itself and formulates a direct answer.

Related concepts

Broader

Generative AI, AI search engine, Answer Engine

Narrower

Comet browser, Deep Research

On the edge

ChatGPT, Large language model, Search-augmented generation, hallucination, AI-agent

A brief history

Perplexity AI was founded in San Francisco in 2022 by Aravind Srinivas, Denis Yarats, Johnny Ho and Andy Konwinski, and the answer engine launched that same year. In 2025, the company released its own browser with a built-in agent, called Comet.

Where things stand

By the end of 2026, Perplexity is one of the best-known AI search engines, offering free and subscription versions along with its own browser. Meanwhile, it faces strong competition from similar features offered by major search companies and conversational assistants, and is accompanied by copyright disputes.

Status: 2026 November

In the news

Appears in 28 Agent Age stories; the curve shows weekly occurrence in the news magazine.

Hungarian trade sources: GEO largely builds on SEO, with takeaways from a Vienna conferenceNov 5, 2026 · Marketing
Perplexity agent links Shopify sales to Meta and Klaviyo campaigns; company claims 3.5x revenueNov 3, 2026 · Marketing
Perplexity blocks Time's ads aimed at AI agents, calling them deceptiveNov 2, 2026 · Marketing
AI agent liability: who pays when an agent gets it wrong?Oct 20, 2026 · Jog
Court ruling blocks Perplexity's Comet agent on Amazon as the lawsuit continuesOct 19, 2026 · Marketing
Reddit and Perplexity AI clash over law firm's role in data-scraping caseOct 12, 2026 · Jog
TikTok brings its ad platform to AI channels and extends Smart+ to search adsOct 5, 2026 · Marketing
AI ad platforms: Melius raises $25M in total, InMobi launches Mobius, Perplexity ships Perplexity ComputerOct 5, 2026 · Marketing

Also known as

Perplexity · Perplexity AI · Perplexity.ai · Perplexity Pro · Perplexity search engine · Perplexity Comet · answer engine · Answer engine

Sources

This entry was machine-edited and has undergone machine expert review; the “In the news” section updates automatically from Agent Age stories.