# Supervised Fine-Tuning (SFT): Transforming Pre-trained Base Model into Instruct — Llama-3-Instruct Anatomy

> Source: https://sukruyusufkaya.com/en/learn/llm-muhendisligi/supervised-finetuning-sft-base-to-instruct
> Updated: 2026-05-13T13:00:29.393Z
> Category: LLM Mühendisliği
> Module: Module 14: Fine-tuning — SFT, LoRA, QLoRA
**TLDR:** Supervised Fine-Tuning (SFT) anatomy: pre-trained base model → instruction-following model. Instruction dataset (Alpaca, OASST, Dolly), chat template application, loss masking (loss only on response), hyperparameter differences (lr 1/10 of pre-train), Llama-3-Instruct production recipe, practical Turkish fine-tune.