What happens when you type a question into ChatGPT? Explain the system behind it.

When you ask a question, ChatGPT tokenizes your input into smaller pieces (tokens), converts them to numbers, and processes them through a Transformer neural network that uses an attention mechanism to understand the context. It predicts the next likely token based on previous inputs, generating a response in chunks. Training involved reading vast amounts of internet text and is refined through user feedback using Reinforcement Learning from Human Feedback (RLHF).