Streaming LLM Responses in Real-Time with SignalR and ASP.NET Core

Introduction A few weeks ago, we built a small internal tool for our legal team. The idea was simple: upload a long vendor contract—sometimes 40 or 50 pages—and get a quick summary. Nothing fancy in terms of tech. React on the frontend, ASP.NET Core on the backend, and an LLM handling the summarization. We pushed…