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What Is Perplexity? A Beginner's Guide to How It Works and What You Can Do with It
機械翻訳 / Machine-translated
A
AI Friends
2026年4月25日・10分で読める
機械翻訳 / Machine-translated
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What you'll learn in this article
Perplexity is a next-generation search engine powered by AI technology. It launched in August 2022.
The biggest difference from a conventional search engine is that AI understands your question and compiles an answer for you. Google and Yahoo! display a list of search result links, whereas Perplexity displays a written answer to your question.
On top of that, it clearly shows the sources (websites and articles) behind each answer so you can verify the reliability of the information. This is called the "citation feature."
Founded by alumni of OpenAI, Meta, Quora, and other organizations, Perplexity combines multiple AI models (programs that reason like humans) to deliver more accurate responses.
Here are some of the things you can do with Perplexity.
Search for and summarize the latest information
It searches the entire internet for up-to-date information and presents it in an easy-to-understand summary. You can look up news and trending topics in real time.
Search within specific sources
You can limit your search to sources such as academic papers, YouTube, or Reddit. For example, switching to Academic mode pulls information exclusively from research papers.
Ask questions in a conversational format
You can ask questions just as you would in a normal conversation.
Even if you're not sure how to phrase something, natural language is enough for it to understand you.
Follow-up questions are easy to ask as well.
Multilingual support
It answers Japanese questions in Japanese. It can also translate English-language information and explain it in Japanese.
In-depth research and analysis (paid plan)
The Pro plan and above use more advanced AI models to handle complex questions. The Max plan includes a feature called "Perplexity Computer" that leverages 19 different AI models.
You can start using Perplexity right away without creating an account. Here are easy steps anyone can follow, even a complete beginner.
Step 1: Visit the official website
Open the Perplexity official website (perplexity.ai). It works on both smartphones and computers.
Step 2: Type your question
Enter what you want to know in the search box at the center of the screen. You can ask anything freely, such as "What's the weather today?" or "What is AI?"
Step 3: Review the answer
The AI will display an answer within a few seconds. Source links appear below the response, so you can click them to verify the original information.
Step 4: Ask follow-up questions
If there's something you'd like to know more about, you can keep asking. It remembers the flow of the conversation, so something like "Tell me more about that" will work perfectly.
Step 5: Choose your search scope (optional)
You can select a search scope as needed. Options include Academic (research papers), YouTube, Reddit, and News, among others.
Pros
Cons
Perplexity is especially recommended for the following types of people.
On the other hand, if you want a full list of search result links, or if you're in an environment with an unstable internet connection, a conventional search engine may be more suitable.
Let's recap the key points about Perplexity.
Why not give Perplexity a try as a new way to gather information? It's free to get started, so feel free to visit and give it a go.
This article is a cross-post from AI Friends.
