Learn how to fine‑tune Qwen‑3‑14B on your own data—with LoRA adapters, Unsloth’s 4‑bit quantization, and just 12 GB of VRAM—while preserving its chain‑of‑thought reasoning. I’ll walk you through dataset prep, the key hyper‑parameters that prevent catastrophic forgetting, and the exact Colab notebook to get you running in minutes. Build a lightweight, reasoning‑ready Qwen‑3 model tailored to your project today! LINKS: https://qwenlm.github.io/blog/qwen3/ https://docs.unsloth.ai/basics/unsloth-dynamic-2.0-ggufs https://huggingface.co/datasets/unsloth/OpenMathReasoning-mini https://docs.unsloth.ai/basics/qwen3-how-to-run-and-fine-tune https://huggingface.co/datasets/mlabonne/FineTome-100k https://docs.unsloth.ai/get-started/fine-tuning-guide https://arxiv.org/html/2308.08747v5 https://heidloff.net/article/efficient-fine-tuning-lora/ NOTEBOOK: https://colab.research.google.com/github/unslothai/notebooks/blob/main/nb/Qwen3_(14B)-Reasoning-Conversational.ipynb Fine-tuning Playlist: https://www.youtube.com/playlist?list=PLVEEucA9MYhPjLFhcIoNxw8FkN28-ixAn Website: https://engineerprompt.ai/ RAG Beyond Basics Course: https://prompt-s-site.thinkific.com/courses/rag Let's Connect: 🦾 Discord: https://discord.com/invite/t4eYQRUcXB ☕ Buy me a Coffee: https://ko-fi.com/promptengineering |🔴 Patreon: https://www.patreon.com/PromptEngineering 💼Consulting: https://calendly.com/engineerprompt/consulting-call 📧 Business Contact: engineerprompt@gmail.com Become Member: http://tinyurl.com/y5h28s6h 💻 Pre-configured localGPT VM: https://bit.ly/localGPT (use Code: PromptEngineering for 50% off). Signup for Newsletter, localgpt: https://tally.so/r/3y9bb0 Fine-Tuning Qwen-3 Models: Step-by-Step Guide 00:00 Introduction to Fine-Tuning Qwen-3 01:24 Understanding Catastrophic Forgetting and LoRa Adapters 03:06 Installing and Using unsloth for Fine-Tuning 04:19 Code Walkthrough: Preparing Your Dataset 07:14 Combining Reasoning and Non-Reasoning Datasets 09:48 Prompt Templates and Fine-Tuning 16:13 Inference and Hyperparameter Settings 18:11 Saving and Loading LoRa Adapters