Unlike ChatGPT, Perplexity searches the live web and shows you exactly where information comes from. Ask 'What happened in tech news today?' and get current answers with clickable sources. It's replacing Google for many researchers and professionals. Free tier is generous. Pro ($20/month) adds GPT-4, Claude, and unlimited searches. Perfect for research and fact-checking.
**Key takeaway:** Perplexity = AI answers with real sources. Great for research.