happy humans through tech

learn how AI actually works, one small lesson at a time. we're working through the language modeling from scratch course in plain words, with happybot as your study buddy.

start lesson 01 →watch the videos

latest lessons

unit 1: how models read

lm from scratch · unit 1 · lesson 03

how tokens pay attention

each token looks back at the others to work out what a word means here.

▶ video 0:59

lm from scratch · unit 1 · lesson 02

how tokens become numbers

every token gets a vector. the table that holds them learns too.

▶ video 0:58

lm from scratch · unit 1 · lesson 01

what is a token?

models don't read words. they read tokens. here's how text becomes ids and back.

▶ video 0:59

how it works

a little every day

1 · watch
one idea, one minute
put your headphones on for a one-minute video, then swipe the carousel.
2 · think
make it click
read the short notes in plain words, with every source credited.
3 · come back
keep the streak going
small lessons add up. one a day and you'll get how models work.

why happybot

tech, but make it happy

Happy Bot is dedicated to creating happy humans through tech and creative products. every lesson is free, short, drawn by hand and credited to its source. no jargon walls, no paywall on the basics.

from the blog