Perplexity is an AI-powered search engine that answers questions with cited sources in real time, combining live web search with LLM synthesis. Unlike traditional search, it returns a direct answer with inline citations rather than a list of links — used as a research assistant, fact-checker, and search alternative by knowledge workers who want synthesized answers with traceable, verifiable sources.
AI-powered search engine that delivers real-time answers with cited web sources. A fast-growing alternative to traditional search.
What Is Perplexity AI?
Perplexity is an AI search engine that combines real-time web crawling with LLM synthesis to deliver direct, cited answers to any question. You type a question in natural language; Perplexity searches the web, reads relevant pages, and generates a response with inline citations you can verify. It supports follow-up questions in a conversational thread, making research more iterative than traditional search.
Is Perplexity Free? What Does Pro Offer?
Perplexity's free tier gives unlimited standard searches. Perplexity Pro ($20/mo) adds: GPT-4o, Claude 3.5 Sonnet, and Gemini Pro as selectable models; unlimited file uploads for document Q&A; and academic paper search. For professional research — synthesis across multiple sources, document analysis, literature review — Pro is worth it. For casual search, the free tier is competitive on factual questions.
Perplexity vs ChatGPT vs Claude: Which Should I Use for Research?
Perplexity for anything requiring current information or source verification — its real-time web search and inline citations let you check the provenance of every claim. Claude or ChatGPT for synthesis of documents you provide, complex reasoning, or creative tasks. The key distinction: Perplexity's knowledge is live but synthesized from web snippets; Claude's reasoning is deeper but limited to training data. Use both together: Perplexity for discovery and source-finding, Claude for deep analysis of what you find.
Heat Score
0–100 viral momentum index combining social buzz, search trends & growth velocity
46
14-day trend
+13
24h
+41
Heat Score Breakdown
Creator Buzz (30%)29
Search Interest (25%)23
Community Discussion (20%)5
Growth Momentum (25%)100
Forecast
Decelerating
low confidence
Now
46
→
+7 days
0
→
+14 days
0
A.R.C. Score
A.R.C. ratings are calculated for developer infrastructure and API-first tools. This tool hasn't been evaluated yet or falls outside the A.R.C. scope.
🔓Data Lock-In Index
67/ 100
Lower = more portable. 0 = fully open, 100 = maximum lock-in.
✗ Webhooks Out✓ Bulk Export✗ Open Formats
Pricing
freemium
Best For
Teams & Solo
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