The Easiest Way to Learn Transformer Architecture — A Medium Story for Everyone
Last Updated on October 6, 2025 by Editorial Team
Author(s): Rohan Mistry
Originally published on Towards AI.
Make sense of the Transformer — the architecture that rewired modern AI — from first principles. Friendly for non‑tech readers, and deep enough that senior developers gain practical intuition and a path to implement or extend models like GPT.
No math overload, no fluff — just the clearest, most intuitive roadmap to understanding Transformers.

This article introduces the Transformer architecture, a significant innovation in AI that has transformed natural language processing and other domains. It covers the essential concepts, mechanisms like self-attention that allow for contextual understanding, and other structural elements that contribute to the efficiency and effectiveness of Transformers in processing data. The narrative includes insights into model training, limitations, potential pitfalls, and practical applications, making it accessible for both newcomers and experienced developers looking to deepen their understanding of this groundbreaking technology.
Read the full blog for free on Medium.
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