Skip to the document
Madhuopen lab
Outcome School · Transformers and architecture7 min read

by Amit Shekhar · 27 August 2026

How do RNNs and Transformers differ?

How RNNs and Transformers differ. These are the two main ways a computer reads a sequence like a sentence, and we will learn why one of them reads word by word, why the other reads everything at once, and when to use which one.

1,282 words#llm#ai#machine-learning4 recall cards

How do RNNs and Transformers differ?
Read on Outcome School ↗then come back to lock it in
Before you read, guess

Describe the sequential processing and memory limitations of RNNs.

Ten seconds, a guess, then read — a wrong guess still makes the answer stick.

What this article covers

  1. What both of them are for
  2. What is an RNN?
  3. The problem with an RNN
  4. What is a Transformer?
  5. The key difference in one line
  6. RNN vs Transformer side by side
  7. Let's tabulate the difference
  8. When to use which one?
  9. Summary

The article lives on outcomeschool.com. Read it there, then come back: the tutor in the margin has read it and will answer questions, and the questions below check what stayed.

Before you go

In one sentence, what was this chapter about?

From memory, without scrolling up. Writing it is what makes it yours; the grade is only to show you what you had.

How sure?