List of Best

Perplexity

AI search that answers questions with inline citations, supporting follow-up questions with full context

Perplexity is an AI search tool that answers questions with cited sources rather than a list of blue links. Each response pulls from current web results and shows the sources inline, so you can verify claims without backtracking through search results. It supports follow-up questions that maintain context, making it faster than running separate searches for related sub-questions. The free…

Top pickFree tier

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Perplexity homepage screenshot

Pros & cons

Our analysis

Pros

  • Answers with inline cited sources
  • Follow-up questions preserve conversation context
  • Focus modes: academic, YouTube, Reddit, WolframAlpha

Cons

  • Free tier limits Pro searches
  • Top model backends require $20/mo Pro
  • API access only via waitlist

What users say

Perplexity is commonly praised for delivering cited answers that allow readers to verify claims without separate searches, and its follow-up question support helps with multi-step research without losing context. A frequently noted strength is the availability of focus modes targeting academic papers, Reddit, YouTube, and WolframAlpha. A common limitation is that the free tier restricts daily Pro searches, and access to stronger backend models such as GPT-4o and Claude requires a paid subscription.

Editorial summary based on public information.

Best for

Researchers wanting sourced answers across web and academic content

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Feature
Perplexity
You.com
PricingFreemiumFreemium
Free tierYesYes
APIWaitlistYes
Open sourceNoNo
PlatformsDesktopWeb
ModelsPerplexityYou
Context window32k32k
Launched20232020
IntegrationsDuckDuckGo, Alibaba, Amazon +5 more

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Specs

PricingFreemium
Free tierYes
APIWaitlist
Open sourceNo
PlatformsDesktop
ModelsPerplexity
Context window32k
Launched2023