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Fine-Tuning LLMs: LoRA, QLoRA, and PEFT in Practice

Fine-tuning used to require massive compute budgets. LoRA and QLoRA changed that — you can now fine-tune a 7B parameter model on a single consumer GPU. This course shows you exactly how.

The Fine-Tuning Revolution

Parameter-efficient fine-tuning (PEFT) techniques like LoRA and QLoRA have democratized LLM customization. Instead of updating all billions of parameters, these methods update a tiny fraction — achieving comparable results at a fraction of the compute cost. This course teaches you to use them professionally.

What You’ll Build

  • Instruction-following assistant: Fine-tuned on a custom dataset to follow domain-specific instructions
  • Code generation specialist: A coding assistant specialized to your team’s codebase patterns
  • Production inference service: Quantized, merged model served with vLLM for low-latency inference

Hardware Requirements

Most lessons work on Google Colab (free tier). QLoRA lessons require a T4 GPU (free on Colab). The capstone project recommages an A100 (available via Colab Pro or AWS).

📋 Prerequisites

  • Python programming (intermediate level)
  • Basic understanding of neural networks and transformers
  • Access to a GPU (Google Colab free tier works for most lessons)

🎯 What You'll Learn

  • Choose between fine-tuning, RAG, and prompt engineering for any use case
  • Prepare high-quality datasets for instruction fine-tuning
  • Apply LoRA and QLoRA to fine-tune 7B+ models efficiently
  • Evaluate fine-tuned models with rigorous benchmarks
  • Deploy fine-tuned models to production inference APIs