Fine-Tuning AI Models Explained: Full Fine-Tuning, LoRA and When to Use Each

Fine-Tuning AI Models Explained — Full Fine-Tuning, LoRA and QLoRA Decision Guide

Fine-tuning adapts a pre-trained AI model to your specific task by updating its weights — but full fine-tuning, LoRA, and QLoRA solve this very differently. This guide breaks down how each method works, what it actually costs in VRAM and dollars, how much data you need by task type, and which approach to choose using the AHW Fine-Tuning Decision Matrix 2026.