AI engineering glossary · Web APIs HTTP
What is SSE (Server-Sent Events)?
Server-Sent Events (also called SSE, EventSource): A standard where a server keeps one HTTP connection open and pushes a stream of text events to the client, in one direction only. Browsers reconnect automatically. It is the usual way chat APIs stream generated tokens.
Server-Sent Events: an example
A language model API streams each new word as a data: line, ending with data: [DONE].
Related terms
More Web APIs HTTP terms
Where you learn it
Server-Sent Events is part of the AI Engineering Program, which teaches it with notes, a hands-on lab and an exam. The first lesson is free.