Generative AI Explained: From Text to Images

1About This Guide

Generative AI went from research curiosity to everyday tool in record time. This guide explains what it

actually is and how it works across different media. By the end you'll understand the technology behind

2What Is Generative AI?

Generative AI is artificial intelligence that creates new content rather than just analysing existing data.

Give it a prompt and it produces something new — an essay, an image, a melody, a video clip — that

3How It Differs From Older AI

Traditional AI mostly classified or predicted — is this email spam, will this customer churn. Generative AI

goes further: it produces. Instead of labelling a picture as "a cat", it can draw a brand-new cat from a

4How It Learns to Create

Generative models train on enormous collections of examples — text, images, audio — and learn the

patterns within them. Once trained, they can generate new content that follows those patterns, guided by

5Generating Text

Text generation is handled by large language models like ChatGPT and Claude. They predict text one

piece at a time to write articles, answer questions, draft emails, and produce code — the most mature

6Generating Images

Image generators turn a text description into original artwork or photos. Type "a watercolour of a

mountain village at dawn" and the model paints it. They're widely used for design, illustration, and

7Generating Audio and Video

Generative AI also creates audio — realistic voices, narration, and music — and increasingly video,

producing short clips from a prompt. Video is the newest and fastest-moving frontier, improving rapidly

• Work: drafting documents, summarising, writing code.
• Creative: art, music, video, and design concepts.
• Learning: explanations, practice questions, tutoring.
• Business: marketing content, prototypes, customer support.
• Verify facts in generated text.