YKYash Karechainyash-karecha.hashnode.dev·2d ago · 21 min readI Built My Own ChatGPT Backend to Understand How AI Streaming Actually WorksEvery time I use Claude or ChatGPT I get stuck on the same question: how does the text just show up, word by word, like the model is thinking out loud in real time? Why does it feel instant when it's 00