A chat AI product built on a large language model.
ChatGPT is like a group chat buddy who never sleeps. Ask a messy question. It comes back with a neat answer.
People use it for questions and writing. They also use it to sort notes. It is handy. But it can sound sure and still be wrong.
LLM
ChatGPT wraps an LLM as a chat product.
RLHF
RLHF helps ChatGPT answer in a more human way.
Prompt
Your prompt points ChatGPT toward its answer.
API
An API lets other apps use ChatGPT too.