Transformer Explainer

What it does

An interactive teaching tool from Georgia Tech that runs a real small GPT model in the browser so you can type your own text and watch, step by step, how the internals arrive at a prediction for the next token. It covers the attention and probability machinery visually rather than mathematically, which makes it a good way to build intuition or to explain the idea to someone else. Nothing to install and no account; the interface is English only, and the small English-trained model behaves oddly on Japanese input.

Summary based on the project's own description. The Japanese page has a fuller beginner guide: setup difficulty, what to prepare, and a step-by-step start.

Screenshots & visuals

Before you start

• Setup difficultyEasy to start
• Command lineNot required
• API keyNot required
• Sends data onlineNo

Judged automatically from the project's own metadata. Always confirm on the official page.

Transformer Explainer FAQ

Is Transformer Explainer free?

Yes. It runs on your own machine, so there is no usage-based cost either.

Do I need to install anything or write code to use Transformer Explainer?

You install it like a normal desktop app. No command line involved.

Does Transformer Explainer work on a phone?

No. It needs a computer.

Can I use Transformer Explainer commercially?

The licence is MIT, which permits commercial use. Conditions such as keeping the copyright notice still apply, so read the licence text before shipping it inside something.

How it compares

The conditions that decide whether you can actually use it, side by side.

"Sends data out" means your input is uploaded to someone's server. Pick "No" when the material cannot leave your organisation.

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