GenAI Part 3 — How ChatGPT Works: A Simple Guide to the Transformer Architecture
Last Updated on September 29, 2025 by Editorial Team
Author(s): Faiz Ahmed
Originally published on Towards AI.
GenAI Part 3 — How ChatGPT Works: A Simple Guide to the Transformer Architecture
I still remember the first time I used Google — it was for a school project when I had to gather details for an essay writing competition.
This article delves into how ChatGPT generates responses, explaining concepts like tokenization, embeddings, and the innovative transformer architecture that powers it. The discussion covers essential components like attention mechanisms and multi-head attention, which help the model understand context and relationships between words. Additionally, it discusses how temperature adjustments affect the model’s creativity in response generation, ultimately providing a comprehensive overview of how generative AI operates.
Read the full blog for free on Medium.
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