What Is Perplexity AI? How It Works and How to Use It

How Does Perplexity AI Work?

Perplexity AI is a combination of a chatbot and a search engine. 

The use of LLMs and NLP makes the bot understand your queries to produce answers in conversational form. It searches for relevant information online and uses machine learning to identify the patterns which uses the context to give more relevant answers, along with citations where available. 

This process is known as retrieval-augmented generation (RAG). 

Here is how it works:

Also Read: Can AI Replace Humans?  

What Are the Main Features of Perplexity AI?

Perplexity AI includes features which can make searching, reading, and organising information easier. 

Here are the main features of this platform:

Real-Time Web Search and Source Citing

Perplexity AI searches the Internet for information and compiles a clear response based on that. It also offers you sources that it uses for information, so you have an option to verify the source rather than just trusting the information presented.

Search Focus and Model Selection

Focus modes let you limit your search to particular kinds of sources, like research papers, etc. Model selection, lets you choose an AI model for your task. Some models may be better at reasoning, while others may be good in writing or analysis. The available options varies by plan.

File Uploads and Document Analysis

You do not have to look for yourself on the internet and search in each case. You can just upload a document which is supported by Perplexity AI and request the platform to give you an overview of your document, interpret the data for you, or get some specific details for you. 

Spaces and Research Organisation

Spaces are where you organize your research based on the topic or the project. You can perform your searches, organize your files, and hold your relevant conversations in one space to be able to find your stuff easily the next time. You can also use Spaces for collaboration purposes. 

Deep Research for Complex Questions

Not all questions can be answered by conducting a simple search. Deep Research helps you to explore the topic using several search queries and create an informative report from the information received.

It is useful when conducting actions such as researching an industry, comparing options, or examining an issue. Restrictions on access and use vary depending on your subscription plan.

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How to Use Perplexity AI

It is a pretty simple process. You just write your question in simple words like you search anything on google. 

Here is how to do it:

Step 1: Enter Perplexity AI 

Visit the official website of Perplexity AI or its official application. Registration is not necessary but in case you want to save your results, you need to sign into your profile first. 

Step 2: Ask a Focused Question and Refine the Prompt

A clear question will lead to a proper response. Don't ask vague questions. Try to frame your questions in a way that includes the topic, purpose, and restrictions.

Step 3: Review the Answer and Evaluate Sources

Evaluate the answer and see the sources cited in it. Look through the publication date of the source, credibility of it, and context. 

In case of statistics, look for official reports and primary sources. In case of products, refer to the manufacturer's literature. 

Step 4: Improve Results by Asking Further Questions

The answer may be improved further according to your liking. The initial answer need not be the final one. You may ask the tool to replace the unfamiliar terms, consider alternative answers, and gather more information about the answer

Step 5: Save and Organise Your Research

Save valuable conversations. In case you're working on an extended project, save the core questions and source references in one place.

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What Is Perplexity AI Used For?

Perplexity AI can be helpful to learn about a certain topic, do a thorough research or find information without manually searching the result each time. The results will depend on the quality of your questions and how carefully you check the answer.

Research and Information Discovery

Anyone from a curious person to students and professionals could use Perplexity AI to discover the topic, find useful sources and get acquainted with the subject. It may also help to find sources to study further.

Understanding Difficult Concepts and Exploring Them

If you're finding it hard to understand some concepts, you may ask Perplexity AI to explain it or explore the concept further. You can even ask follow-up questions to clarify things.

Summarizing Articles, Reports, and Documents

If you're in a hurry, Perplexity AI can summarize web content and documents. It can provide main points and important findings. Perplexity AI will summarise long documents and make it easier for you to review it.

Don't forget to cross-check the information with the original document since it shouldn't be trusted entirely.

Fact-Finding for Work and Everyday Needs

Perplexity AI can assist in comparing options, finding information about the product, understanding public policies or preparing for the meeting. It simplifies your work as you don't have to do all things manually.

Remember to double-check your information.

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How Accurate Is Perplexity AI?

The responses provided by Perplexity AI are accurate, yet it can still make mistakes. The responses are generated based on the data extracted by the platform, the sources used, as well as their quality and accuracy.

Citations help in verifying the data, but that doesn't mean there can't be mistakes.

Common Mistakes to Avoid

Here are the mistakes you can avoid when using Perplexity AI:

• Don't take all responses as verified facts. Generated answers can still contain mistakes even when they sound true.
• Don't just check only the first citation. A single source can’t answer every claim in the answer.
• Don't ignore publication dates. If the information is old, you will be referring to outdated information.
• Using vague prompts for queries. Broad questions will produce broad answers, and they might not be as correct as you need.
• Taking summaries generated as the final document without cross-checking the original document.

Also Read: AI in Banking and Finance Explained: Trends, Uses, & Impact 

Perplexity AI vs ChatGPT vs Google Search

As Perplexity AI is very often compared to these two, let's find out the difference between Perplexity AI vs ChatGPT vs Google Search:

Factor	Perplexity AI	ChatGPT	Google Search
Primary purpose	Research-oriented answers with citations	Conversational assistance, analysis, and content creation	Finding web pages and online information
Typical experience	Synthesised answers linked to sources	Interactive responses, with web research available in supported modes	Search results linking to relevant pages
Useful for	Initial research and source discovery	Drafting, explaining, analysing, and solving problems	Navigating websites and locating original information
What to check	Whether citations support the answer	Whether claims and references are accurate	Whether the selected pages are credible and relevant

Also Read: Top 20 Types of AI in 2026 Explained 

Is Perplexity AI Free to Use?

Perplexity AI comes with both a free version and paid plans. The specifics of how these differ will vary depending on the plans available at present.

If you are just getting started with using the platform, you should begin with the free version and see how well it works for your needs. You might want to upgrade to a paid plan once you realize that it can no longer meet your needs.

Make sure to visit the official website of Perplexity AI to find out about current prices and plans.

Also Read: How to Learn Artificial Intelligence: A Step-by-Step Roadmap 

Conclusion

Perplexity AI combines web search and AI-produced responses in an application that is helpful in investigating your questions, identifying resources and organizing your research. It helps in keeping track of relevant information while answering your questions.

Use it to formulate questions, find sources that can be used, and validate the important claims yourself. That is how you can make use of Perplexity AI without assuming an answer to be the truth.

Ready to start your journey? Book a free consultation with upGrad today to find the best path for your career.    

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