Streaming AI Responses in Python | Build ChatGPT's Typing Effect in Python (FastAPI + Ollama) |TAMIL

Ever wondered why ChatGPT types its answer word by word? In this video, you will build the same live-streaming experience yourself, using a free open-source model running on your own computer. No API key and no cost. What you will learn: Why streaming improves UX (time to first token vs total time) How stream=True works with Ollama (Llama 3.2) Building a streaming API with FastAPI and Server-Sent Events (SSE) Reading the stream in the browser with fetch() Testing and measuring the stream with curl and Python Production tips: buffering, cancellation, errors, keep-alives Tools used: Python, FastAPI, Uvicorn, Ollama, Llama 3.2 Setup commands: ollama pull llama3.2 pip install fastapi uvicorn ollama uvicorn app:app --reload