Combines LLMs like ChatGPT and Claude, using RAG to achieve personalized AI-powered search (Perplexica handles all public information, while Quanta Quest focuses on processing all personal data. Regular users can't ask Perplexica "What meetings do I have tomorrow", "What lessons were learned from xx project", "Which newsletters have I subscribed to", etc., but you can ask Quanta Quest all these questions related to you).