What problem does it solve? Fine-tuning large language models typically demands expensive GPUs and complex configuration. This Skill provides expert guidance for using Unsloth to train models 2-5x faster with 50-80% less memory, making fine-tuning accessible on consumer hardware and free Colab notebooks. ## Core Features & Use Cases - Memory-Efficient Fine-Tuning: Guidance on LoRA and QLoRA configuration, VRAM requirements by model size, and hyperparameter selection for Llama, Qwen, Gemma, Mistral, and Phi models. - Reinforcement Learning Training: Instructions for GRPO, GSPO, DPO, ORPO, and KTO training to build reasoning models with reduced VRAM consumption. - Model Export & Deployment: Steps for saving fine-tuned models to GGUF format and deploying via Ollama, llama.cpp, vLLM, or SGLang. - Use Case: Fine-tune a Llama 3.1 8B model on a custom dataset using a free Colab notebook with 4-bit QLoRA, then export it to GGUF and run it locally in Ollama. ## Quick Start Ask the agent to show you how to fine-tune a Llama model on your dataset using Unsloth with QLoRA on a single GPU.