Overview

Fine-Tuning LLMs with PyTorch and Hugging Face Train, Customize, and Deploy Large Language Models - A Hands-On Guide for Developers and AI Practitioners In the new era of open-weight AI, fine-tuning is no longer reserved for big tech. It's the developer's key to transforming powerful pretrained models into intelligent systems that understand your data, your tone, and your domain. Fine-Tuning LLMs with PyTorch and Hugging Face is the definitive, hands-on guide for developers, engineers, and AI enthusiasts who want to move beyond prompt engineering and start teaching models to think. Through real-world examples, clean code, and practical workflows, this book takes you from your first training run to deploying a production-ready model that performs like it was built in-house. You'll learn how to: Set up your fine-tuning environment using PyTorch and the Hugging Face ecosystem Prepare, tokenize, and curate datasets that truly shape model behavior Run efficient fine-tuning using LoRA, QLoRA, and parameter-efficient methods Evaluate models for accuracy, coherence, and bias - quantitatively and qualitatively Deploy models with FastAPI, Gradio, and cloud or local infrastructure Apply fine-tuning to specialized domains like finance, healthcare, and law Compress and quantize models to run on low-memory devices without sacrificing quality Automate continuous learning pipelines and integrate retrieval systems (RAG) for real-world applications What makes this book different is its developer-first focus. You'll not only learn the how but the why behind each step - from understanding the transformer architecture to optimizing training loops for small GPUs. Each chapter reads like a real conversation between the model and the maker - bridging theory, experimentation, and production. By the final chapters, you'll see how fine-tuning reshapes your role from programmer to model designer. You'll understand why the future of AI isn't just about bigger models - it's about smarter adaptation. Whether you're training your first conversational model, building a retrieval-augmented assistant, or deploying a fine-tuned LLaMA on your laptop, this book is your step-by-step roadmap to mastering the craft of model customization and deployment. Perfect for: Developers - AI engineers - Machine learning enthusiasts - Applied researchers - Tech founders exploring domain-specific AI

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