LookingGlass
A field guide to things worth understanding

Making
the invisible
legible.

Looking Glass is an unhurried collection of considered explainers — the models that write for us, the machines that make our coffee, the stars we live by. One piece at a time, held up to the light.

Begin reading3 of 3 published

The archive

April 2026
Series I

On language models

How modern AI systems read, remember, and differ — the first concepts in the archive.

  1. 01
    On scale

    How much is one million tokens?

    Tokens are the currency models count in. One million of them is more — and less — than you'd expect.

    5 min
  2. 02
    On models

    What the latest models actually do differently

    Opus, Sonnet, Haiku, GPT-5, Gemini, and the open-weight frontier — compared on what matters.

    8 min
  3. 03
    On memory

    What is a context window?

    A model reads through a sliding viewport. What's inside it, it sees. What falls out, it forgets.

    7 min

Series II arrives when it’s ready. The archive is the roadmap.