5.1 Choosing the right approach: Prompting, RAG, or fine-tuning5.1.1 When to use each approach: A practical decision framework5.1.2 Hybrid approach: Combining RAG and fine-tuning5.2 Case studies: Fine-tuning in the real world5.2.1 Medicine: Med-PaLM 25.2.2 Finance: BloombergGPT and FinGPT5.2.3 Code generation: Codex5.3 Understanding the fine-tuning process5.3.1 Data preparation5.3.2 Fine-tuning closed-source models (OpenAI)5.3.3 Understanding key fine-tuning approaches5.3.4 Building a customer-support assistant5.4 Knowledge distillation for LLMs5.4.1 How knowledge distillation works in LLMs5.4.2 Best practices