As the creator of My Hacker News, I'd like to share some technical details about how the service works: We stream and index all HN stories in real-time using Firestore. For personalization, we use OpenAI embeddings to perform nearest neighbor search. Claude 3.5 Sonnet or GPT-4 (user's choice) then curates and summarizes the content. The frontend is built with Next.js and hosted on Vercel for optimal performance. Happy to answer any technical questions!