Henry AsanteOct 11, 2025 If you ask the internet how to model a chat experience, you will get an approach based around messages and their user or authors. This is simple, works, and scales if your only author is a user for the most part. The limits of message-first The message-first model assumes that each message—and its metadata—is the primary unit of organization. Everything else—replies, reactions, AI responses, summaries, etc.—hangs off the message unit. It sounds reasonable, until you try ...