Build a Large Language Model (from Scratch)

Name: Build a Large Language Model (from Scratch)
Author: Sebastian Raschka

Sebastian Raschka

From the back cover: Build a Large Language Model (From Scratch) is a practical and eminently-satisfying hands-on journey into the foundations of generative AI.

11.3 score

#176 overall

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Score based on developer article recommendations — not sales data or reviews.

LLM Machine Learning AI / MLtransformersdeep-learningnlp

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🟢 Developer Verdict

A practical, deep dive into building large language models from scratch, offering a thorough understanding of their underlying mechanics.

Read this if

✓ You want to implement large language models from first principles.
✓ You seek a deep, hands-on understanding of generative AI foundations.
✓ You are ready for an advanced, up-to-date exploration of LLM internals.

Skip this for now if

✗ You are looking for a high-level overview or conceptual introduction to LLMs.
✗ You prefer learning LLMs through existing frameworks and high-level APIs.
✗ You are not comfortable with advanced machine learning implementation details.

Developer signal: Overwhelming Consensus · 100% 5 analyzed mentions PracticalDeep TechnicalComprehensive

🔄 Compare & Reading Path

Alternatives

AI Engineering Choose this for a different approach Intermediate Hands-On Large Language Models Choose this for a different approach Intermediate Designing Machine Learning Systems Choose this for a more hands-on, practical approach Advanced

Read Before

AI Engineering Start here for a shorter introduction Intermediate LLM Engineer's Handbook Start here for a shorter introduction Intermediate

📊 Why Developers Recommend

It provides deep technical understanding of AI and machine learning.

Referenced by multiple developers, suggesting consistent practical value.

Valued for its practical approach — concepts connect directly to real-world engineering decisions and daily work.

Top signals: PracticalDeep TechnicalComprehensiveFoundational

💬 What Developers Say

"Sebastian Raschka is a legend in the machine learning community."
— somadevtoo · 10 Must-Read AI and LLM Engineering Books for Developers in 2026 · May 25, 2025

"I highly recommend reading it before diving into chapter 1."
— uponthesky · [Book Review] Build a Large Language Model (From Scratch) by Sebastian Raschka · Oct 8, 2025

"If you only read one book to truly *understand* how LLMs work under the hood, make it this one."
— somadevtoo · I Read 20+ Books on AI and LLM Engineering: Here Are My Top 10 Recommendations · Feb 18, 2026

Based on 5 developer article mentions