TLDR Dev · ARTICLES & TUTORIALS

WHY WEBSOCKETS BEAT SSE FOR AI STREAMING AT SCALE

ably.com22 min read

Summary from the TLDR Dev newsletter

WebSockets provide the bidirectional channel that agentic interfaces need for cancellation, approvals, and steering while a response is still streaming. They also reduce per-message overhead and support ordered binary data, but teams must still add reconnection, delivery guarantees, fan-out, and operational tooling themselves.