Hello World

The simplest way to use an LLM is to send it a prompt — a plain text instruction — and get a response back.

This is the "Hello World" of AI. You type something, and the model replies.

Prompt

Say hello and briefly explain what you are.

The model responds in natural language. It understands your intent even though no special syntax is required.

Response

Hello! I'm a large language model, an AI trained on text
data to understand and generate human language. I can answer
questions, write content, translate, summarize, code, and
much more. How can I help you today?

You can also ask a direct question. The model will draw on its training data to provide an answer.

Prompt

What is the capital of France?

Factual questions with well-known answers typically get accurate, concise responses.

Response

The capital of France is Paris.

Key takeaway: LLMs are conversational by default. You don't need any special formatting — just write what you want in plain language.

That's it! You've just sent your first prompts to an LLM.
Next, we'll look at practical tasks like summarization.