HexaHype
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Interactive AI & ML lessons

Understand how AI
actually works, from the ground up.

HexaHype is a growing library of hands-on lessons on machine learning and AI: full courses, short reads, and guided paper walkthroughs. Each one is built from first principles, with worked examples and runnable code that make the ideas stick.

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2 tracks live · 17 lessons · ~92 min · free to read, more on the way

A path through modern AI

Start with the foundations and work up to frontier topics. New tracks land over time.

  1. 01 Neural Networks Short course Build a neural network from its smallest piece, one neuron at a time. 2 parts ~9 min
  2. 02 How Language Models Actually Work Course A first-principles path through tokens, embeddings, attention, and the machinery behind LLMs, built up step by step. 15 lessons ~83 min
  3. 03 Prompt Engineering Short course ☕ Brewing Get reliable, repeatable output from any model: context, instructions, and proven patterns. coming soon
  4. 04 Training & Fine-Tuning Course ☕ Brewing How models learn from data, and how to adapt a pretrained model to your own task. coming soon
  5. 05 Retrieval-Augmented Generation Short course ☕ Brewing Give a model your own documents so its answers stay grounded in your facts. coming soon
  6. 06 AI Agents Short course ☕ Brewing Models that plan, call tools, and act in a loop to finish real tasks. coming soon
  7. 07 Attention Is All You Need Paper explainer ☕ Brewing A guided, plain-language read of the paper that started the transformer era. coming soon

Your personal study layer

Reading is free and needs no account. Sign in and the lessons turn into a study tool that remembers you.

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Progress that follows you

Every lesson remembers where you stopped, on any device, so you always pick up where you left off.

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Highlights & notes

Mark up the text and jot your own notes. They stay anchored to the exact passage.

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Spaced review

Key ideas come back on an FSRS schedule, right before you would forget them.

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Exercises

Predict outputs, trace algorithms, and check your understanding with instant feedback.

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Focus mode

Hide every distraction and read full-screen, like a calm, paginated book.

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Themes, synced

Light, sepia, and dark, plus all your data, kept in sync across your devices.

📖 Free, no account

  • Every track, start to finish
  • Nothing stored on a server
  • Zero tracking

✨ With a free account

  • Progress tracking
  • Highlights & notes
  • Spaced review, synced across devices
  • Dark & sepia themes
  • Full-screen focus mode

Never tracked when you're signed out. With an account we store only your email and your own notes, never sold, no ads. Delete it anytime and it's gone for good.