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A free toolkit for the AI age.

Ten small, fast, no-nonsense tools for anyone working with or curious about AI. Count tokens, price an API call, compare models, look up a term, or train your eye to spot AI. Every one is free and runs right in your browser.

Build

Ship with AI: count tokens, price prompts, size context windows.

Token Counter
See how your text breaks into tokens, live.
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Cost Calculator
Price a prompt across GPT, Claude and Gemini.
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Prompt Library
Copy-paste prompt templates that actually work.
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Context Window
How much text really fits in a model's memory?
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Learn

Level up: definitions, prompts and a quiz to test yourself.

AI Glossary
Plain-English definitions for 100+ AI terms.
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Literacy Quiz
10 questions. Find out how well you really know AI.
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Compare

Pick the right model for the job, without the hype.

Model Comparison
GPT vs Claude vs Gemini, side by side.
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Which AI?
Answer a few questions, get a model recommendation.
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Spot AI

Keep your bearings: tell real from machine-made.

Spot the AI
Human or machine? Train your eye on real samples.
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Spot AI Images
A field checklist for fake photos and video.
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Tools are the appetiser. The app is the meal.

Scroll: Learn AI teaches the ideas behind every tool here, in one minute lessons with quizzes that make them stick. Free on iOS.

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A free toolkit for the AI age.

Build

Token Counter

Cost Calculator

Prompt Library

Context Window

Learn

AI Glossary

Literacy Quiz

Compare

Model Comparison

Which AI?

Spot AI

Spot the AI

Spot AI Images

Tools are the appetiser. The app is the meal.