Perplexity AI

What is Perplexity AI?

Perplexity AI is an AI search engine that combines the speed of a traditional search engine with a chatbot’s conversational ability. Unlike Google, which gives you a list of links, Perplexity reads those pages for you, synthesizes the information, and gives you a direct answer with citations you can verify in real time.

Founded in 2022 by ex-employees of OpenAI, Meta, and DeepMind, Perplexity has grown to over 10 million active users and is considered the most serious alternative to Google for searches that require synthesized, up-to-date information.

Who is Perplexity for?

• Researchers and journalists who need well-grounded answers with verifiable sources.
• Students doing research who want to understand a topic before going deeper.
• Professionals making decisions based on up-to-date market, tech, or trend information.
• Anyone frustrated with the 10 Google links who wants the answer directly.

Core features

1. Real-time answers with citations

Every claim in a Perplexity answer is numbered with a citation. Click any number to see exactly which web page the data came from. Information is up to date because Perplexity indexes the web in real time, not from a frozen model.

2. Focus mode (specialized sources)

You can limit the search to specific categories: Web (whole internet), Academic (only papers and scientific publications), YouTube (video transcripts), Reddit (real user opinions), News (latest news), Wolfram Alpha (math and data). Academic mode is especially strong for university research.

3. Conversational search

Unlike Google, where each search is independent, Perplexity remembers conversation context. You can ask “What is inflation?”, then “How does it affect interest rates?”, then “And in the US in 2024?”, without repeating context.

4. Perplexity Pages

Generates full, structured articles on any topic in one click. Pages creates a public page with index, sections, images, and citations you can share and keep editing. Great for quick reference guides or research briefs.

5. File and URL analysis (Pro)

With Perplexity Pro you can upload PDFs, images, CSVs, or paste URLs for Perplexity to analyze. Ideal for asking questions about articles, reports, or documents without leaving the chat.

Real-world use cases

Industry news monitoring

Instead of reading 10 articles on the latest EU AI regulation, ask directly: “What does the AI Act say about high-risk AI systems and when does it take effect?” Perplexity reads the latest sources and synthesizes the relevant parts citing EUR-Lex, Reuters, and legal sources.

Competitor research

Ask: “What plans and prices does [competitor] currently offer?” or “What are the most common criticisms of [product] on Reddit?” For the second, use Focus > Reddit. You get real user opinions, not marketing.

Fact-checking

Read something on social that looks fishy? Paste it into Perplexity: “Is it true that [claim]?” Perplexity searches verified sources and tells you what reputable media say, distinguishing primary sources from speculation.

Fast academic research

With Academic mode, ask: “What’s the current state of research on the gut microbiome and depression?” Perplexity cites real papers from PubMed, Nature, Science, and other journals. Perfect to establish the state of the art before a deep literature review.

Pricing and plans

The free plan is enough for casual use. Pro is justified if you do intensive research and want access to the most powerful models for complex questions.

Tips to get the most out of Perplexity

Ask like a journalist, not a search engine

“Tell me about X” gives generic results. “What changes does the EU AI Act introduce on facial recognition and how does it affect Spanish startups?” gives a useful, structured answer with relevant sources.

Use Focus mode for context

For market research → Reddit. For academic research → Academic. For current data → News. For calculations → Wolfram Alpha. The right context dramatically changes the answer.

Reference authoritative sources

You can steer the sources: “According to the ECB, what are the inflation projections for 2025?” or “What does the WHO say about maximum daily sugar intake?”. Perplexity prioritizes those authoritative sources.

Combine with follow-up questions

The real strength appears in conversations: “What is RAG in AI?” → “What are the best Python libraries to implement it?” → “Is there a current practical tutorial?”. Each question builds on prior context.

Pros and cons

Related reads on NodoAI

• ChatGPT · the most popular alternative for general tasks.
• Claude · the writing and code champion.
• Gemini · the Google ecosystem alternative.