Overview

Unlock the full engineering power of Large Language Models with Python. In LLMs in Python (2026 Edition), acclaimed AI engineer and author Finn Cordex delivers a hands-on, expert-level guide to designing, building, fine-tuning, and deploying modern language models. This is not another beginner's tutorial-it's a complete engineering playbook packed with 50+ real-world Python projects that reveal exactly how today's most advanced AI systems are built. From core transformer theory to multi-agent workflows and Retrieval-Augmented Generation (RAG), every chapter blends deep technical insight with practical, runnable code. You'll move step-by-step through building and scaling production-ready LLM systems using LangChain, LangGraph, Python, and state-of-the-art open-source frameworks. What You'll Learn Master the architecture and inner workings of Large Language Models Build and train LLMs from scratch using modern Python toolchains Fine-tune and optimize models with LoRA, PEFT, and transfer-learning methods Create advanced LangChain pipelines for multi-step reasoning and agentic AI Implement LangGraph for context-aware, structured decision workflows Design Retrieval-Augmented Generation (RAG) systems that ground LLMs in data Deploy, scale, and monitor production-grade LLMs in cloud environments Explore 50+ hands-on projects that reinforce every concept through real-world use cases Who This Book Is ForThis book is written for developers, data scientists, and AI engineers who already know Python and want to move beyond theory into true LLM engineering mastery. Whether you're building enterprise AI systems, autonomous agents, or custom language applications, you'll find actionable techniques, expert commentary, and deployable code ready to use in your own projects. Why This Book Stands Out Expert-Level Projects: Each project builds on the last, guiding you from fundamental model construction to multi-agent AI design. Cutting-Edge Frameworks: Covers LangChain, LangGraph, RAG, and modern agentic patterns. Up-to-Date for 2026: Reflects the latest breakthroughs in LLM architecture, fine-tuning, and open-source tooling. Engineer's Perspective: Written by Finn Cordex-an author known for bridging research theory with hands-on, production-grade AI engineering. If you're serious about mastering Large Language Models in Python, this is your definitive guide. Build, deploy, and scale next-generation AI systems with confidence.

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