Perplexity is an AI-powered search tool that answers questions in natural language and includes citations to the sources it used. Instead of returning a list of links, it synthesizes an answer and shows where each piece of information came from. You can click through to verify claims or read further. Follow-up questions are supported within the same thread, which makes research feel more like a conversation.

The platform is useful for quick fact-finding, comparing products, summarizing recent news, and exploring unfamiliar topics. It is not a replacement for careful reading of primary sources, but it can speed up the early stage of research significantly. A free tier is available, with paid plans offering more capable models and additional features.