What is Zero-Shot? Plain-English Definition

In more detail

Zero-shot means asking a model to do a task cold — no examples, no demonstrations, just instructions. ‘Translate this into French.’ ‘Classify this review as positive or negative.’ The model has never been shown how you want this particular job done; it simply does it.

It matters because this is the everyday magic of modern AI — before LLMs, software needed purpose-built training for every new task. It’s also an honest test of what a model truly knows. And when zero-shot falls short, showing a few examples — few-shot — is the natural next step.

📌 See it in action

A shop owner pastes a customer email into a chatbot with one line: ‘Label this complaint as shipping, product quality, or billing.’ No examples, no setup, no training — the model reads the email and answers ‘shipping.’ Correct, first try, from instructions alone. That’s zero-shot.

Goes with

Few-Shot →Chain of Thought →

Now put the vocabulary to work.

Meet the models →Which AI is mine?