Ganesh Epili
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Transformers From Scratch, Part 2: Attention Is the Whole Game
July 25, 2026
·
19 min read
SERIES
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Transformers From Scratch
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Part 2 of 6
‹ Part 1
Why Attention Exists
Part 3›
The 2017 Architecture, Assembled
Transformers From Scratch — all 6 parts
01
Why Attention Exists
02
Attention Is the Whole Game
You are here
03
The 2017 Architecture, Assembled
04
The Family Tree (BERT, GPT & T5)
05
What Changed Since 2017
06
From Architecture to ChatGPT