Perplexity is an AI answer and research product built around retrieval. A user can enter short search-style keywords or ask a complete question; the system searches the web, organizes material from multiple sources, and keeps citations in the answer so the result does not stand as unsupported generated text.
A simple query is suited to a quick overview and follow-up questions, Pro Search performs a more guided investigation, and Research is intended for complex subjects that require repeated searching, reading, and reasoning. Longer results can become reports and be exported or turned into shareable pages, making the product less about producing more prose and more about shortening the path from discovery to a verifiable conclusion. Projects preserve search sessions, files, instructions, connected tools, and accumulated context for an ongoing subject, allowing an individual or team to return to the same body of research. Perplexity is useful for product research, learning, travel planning, and news synthesis, but a citation does not guarantee that a source is reliable; professional decisions still require checking the original publication, date, and conflicting evidence.