Perplexity
by AI Productivity Tools
Perplexity is an AI-powered search engine that searches the Internet in real-time and delivers precise answers with citations in natural language.
What is Perplexity?
Perplexity is an AI-powered search engine that searches the Internet in real-time and delivers precise answers with citations in natural language. Suitable for researchers, students, content creators and other users who need to quickly obtain trusted information.
Core Features
- Real-time internet search with clickable citations for answers
- Supports multiple rounds of questioning and contextual coherence
- Supports GPT-4, Claude, Sonar and other underlying model switching (Pro)
- Focus mode: You can limit the search scope (academic, Reddit, YouTube, etc.)
- File upload and analysis, supporting PDF interpretation
Pricing Plans
The free version has unlimited basic searches; the Pro version is $20/month ($200/year) and unlocks advanced models, more daily searches, and file upload capabilities.
Pros
- The answers are connected to the Internet in real time, and the information is highly timely.
- Each answer is accompanied by a source link to verify its authenticity.
- The interface is simple and the threshold for getting started is extremely low.
Cons
- The free version has a limited number of advanced model calls
- Complex reasoning and long article creation abilities are weaker than ChatGPT/Claude
- The retrieval quality of Chinese content is not as stable as that of English
Perplexity AI will be launched in 2022 and is positioned as an “AI search engine with cited sources.” The core difference is that the source of the information will be marked in each answer, which solves the pain point of traditional LLM being prone to “serious nonsense”. It’s particularly suitable for situations where you need to quickly verify facts, access the latest information, or do preliminary research.