Perplexity
AI-powered search engine that answers questions with cited sources
AIFree
About Perplexity
Perplexity is an AI search engine that answers questions by searching the web in real-time and providing responses with inline source citations. Unlike traditional AI chatbots, every claim links back to its source, making it easy to verify information. The free plan gives you unlimited Quick Searches (using a smaller model) and 5 Pro Searches per day (using more powerful models with deeper research). It's particularly strong for research, fact-checking, and staying current on topics that change frequently.
Key Features
- ✓Real-time web search with source citations on every response
- ✓5 Pro Searches per day on free plan (deeper, multi-step research)
- ✓Unlimited Quick Searches for fast questions
- ✓Focus modes for Academic, Writing, Math, and more
- ✓Collections for organizing research by topic
- ✓Available on web, iOS, and Android
Use Cases
- •Research with verifiable, cited sources
- •Staying current on fast-moving topics
- •Academic research and literature review
- •Fact-checking claims and comparing viewpoints