Pretty much a year and a half back (I think it was March 2023). We had a real complicated set up back then, since I couldn't put our Open AI client key on the client side so I wrote an end point to to call Open AI's GPT3.5 API and then send that back to the front end to get the "typewriter" effect that they had on the frontend. It was quite broken back then cause sometimes random artifacts used to pop up in response, and some chunks came along with one another requiring me to write some really convoluted deserializing logic for it.