Yes, that is that I mean. All the modern "ChatGPT" style API's use this, so if you're building anything that invokes them you can choose between buffering the entire response and modifying/relaying it once complete, or building up a toolchain of streaming-capable utilities.
Of all the http-client applications I tested (Curl, Postman, Insomnia, Bruno), somewhat hilariously Curl has the best support. It will output all 'Transfer-Encoding: chunked' with line-by-line buffering, whereas Postman only supports responses precisely following the `Content-Type: text/event-stream` format (strictly less powerful than curl, as this format requires newlines in between events, and a bunch of overhead on top of that). The others buffer the entire response before displaying anything.
The `Content-Type: text/event-stream` format is fine enough, but I personally prefer to just plainly chunk the responses and let the client choose whether to buffer them into memory and operate on the entire value at once, or interpret them live as the chunks come in. With tools like gjp-4-gpt (Gradual JSON Parser 4 GPT's) you can even interpret partial JSON objects live as they come in and display complex/nested data structures in a generative manner.