Perplexity AI: the AI search engine, and who it's really for

Perplexity is an answer engine: you ask a question, it searches the web and writes a summary with links to the sources it used. It is built for people who want information they can verify, and much less for those who mainly want to draft long texts or create images for free.

What is Perplexity?

Perplexity is made by Perplexity AI, a US company. Where ChatGPT or Claude are first and foremost chat assistants, Perplexity starts with a web search. Every answer comes with numbered sources you can click through.

It is the textbook case of AI search: instead of a list of blue links to sort through yourself, you get a written summary along with the pages it was built from. That saves real time, as long as you keep the habit of checking.

Under the hood, Perplexity runs its in-house model, Sonar, described on our Perplexity lab profile. On paid plans, it also gives access to models from OpenAI, Anthropic, Google and other providers.

How it works in practice

Using it is straightforward. You type a question in plain English, for example “What documents do I need to renew a passport?” or “What does the latest research say about remote work and productivity?”. Perplexity runs a search, reads several pages and answers in a few paragraphs, with numbers pointing to each source.

You can then ask a follow-up, just like in a chat: “And for a child under 18?”. The tool keeps track of the conversation.

Two modes go further than a basic search:

• Pro Searches, more thorough searches, capped at 3 per day on the free version;
• Research mode, an in-depth search that produces a longer report, capped at 1 query per month on the free version.

Free, Pro or Max: the plans

Here are the individual plans listed on Perplexity’s help center as of October 22, 2026:

Plan	Price	What you get
Free	0 dollars	Near-unlimited basic searches, 3 Pro Searches per day, 1 Research query per month
Education Pro	10 dollars a month	For verified students and teachers
Pro	20 dollars a month or 200 dollars a year	Advanced models, more in-depth searches
Max	200 dollars a month or 2,000 dollars a year	Highest limits, extended memory, Max assistant in Comet

For organizations, Enterprise Pro is billed at 40 dollars per seat per month. Prices are set in US dollars; what you actually pay may vary with your country and local taxes.

To see how Perplexity stacks up against general-purpose assistants, here are their features and entry prices side by side:

Assistant	Free	Paid from	Web search	Agent mode	Voice	Images
Perplexity	Limited	$10/mo	Yes	Yes	—	Yes
ChatGPT	Limited	$8/mo	Yes	Yes	Yes	Yes
Claude	Limited	$20/mo	Yes	Yes	—	—
Gemini	Limited	€4.99/mo	Yes	—	Yes	Yes

Pro is priced in the same range as ChatGPT Plus or Claude Pro. If you are on the fence about paying, our guide to which AI subscription is worth the money can help you decide.

Who is Perplexity for?

Perplexity is not “the best AI” across the board, but it fits some profiles very well.

• Students: to get a handle on a topic, find articles and trace claims back to their sources. Education Pro, at 10 dollars a month, is aimed squarely at them. Our guide to the best AI for students compares the options.
• Journalists, researchers and analysts: to follow a story and quickly find out where a piece of information comes from.
• Curious minds: to make sense of the news, plan a trip or untangle some paperwork, with links to read further.
• Professionals who run searches every day and need to cite where their facts come from.

It is a weaker fit if your main need is writing long documents, digging deep into your own files, or generating images on the free tier. For those jobs, a general-purpose assistant is usually more comfortable. Our roundup of the best free AI covers the alternatives.

Comet, Perplexity’s browser

Perplexity also makes Comet, a Chromium-based web browser that has been free for everyone since October 2, 2025. It builds in Perplexity search plus an agent, Comet Assistant, that can browse, click and fill in forms on your behalf. According to Perplexity’s help center, the agent’s requests are not included in the free plan.

A browsing agent reads pages written by anyone. A booby-trapped page can hide instructions meant to hijack it: that is prompt injection. Perplexity describes a layered defense, but no vendor promises complete protection. Keep sensitive actions, such as payments, under your own approval.

The limits to know about

Sources do not guarantee accuracy

Citing sources is real progress, but a summary can still distort an article, blend two facts together or lean on an unreliable page. Hallucinations, false statements delivered with confidence, are still possible. Open the links before you reuse a figure, a date or a piece of advice.

Your searches and your data

By default, the AI data retention setting is turned on for Free, Pro and Max accounts, which means Perplexity may use your searches to improve its services. You can turn it off in Preferences. Incognito mode does not keep your searches at all. Perplexity does not state that personal users’ data is hosted in the European Union.

Check yourself Perplexity gives you a precise figure tagged with source 2. What do you do before using it in a document?

You open source 2 to confirm the figure is really there, in the same context and for the same date. If the page does not contain it, or comes from an unreliable site, look for the data from the official body concerned.

Four habits for using it well

• Ask a real question rather than a string of keywords: specify the country, the time frame or the level of detail you want.
• Look at what kind of sources it used: an official site, an established outlet or a study carry more weight than a forum or an anonymous blog.
• Ask for a specific source when a claim is not tied to any link, or rephrase the question.
• Use incognito mode for sensitive searches about health, money or your private life.

Perplexity or a general-purpose assistant?

If you mostly want sourced answers, Perplexity is an excellent starting point. If you want a do-it-all tool, an assistant like ChatGPT, Claude or Gemini will be more versatile. Our ChatGPT vs Perplexity comparison goes into the differences, and the assistant comparison tool lets you line up other pairs. For the big picture on every assistant and how to choose, read our pillar guide, what is the best AI?.