Server-Sent Events: The Simple Path to Real-Time AI Chat Streaming

While WebSockets seem like an obvious choice for streaming AI responses, Server-Sent Events (SSE) offers a simpler, more practical alternative that maintains standard HTTP compatibility and avoids complex load balancing issues. By leveraging HTTP's chunked transfer encoding without Content-Length headers, developers can stream AI messages efficiently while preserving existing HTTP infrastructure benefits like authentication, CORS, and caching. This approach is foundational to how modern AI services like ChatGPT deliver real-time streaming responses to users.