What Is AI Fine-Tuning 2026
Fine-tuning is training a pre-trained LLM on your custom data to shift its behavior, style, or knowledge. When to Fine-Tune - Style/voice: brand-specific tone - Structured output: consistent JSON/format - Domain knowledge: medical, legal jargon - Reduced cost: fine-tuned smaller model can rival GPT-4 on narrow tasks When NOT to Fine-Tune - Dynamic data → use RAG - Just want better outputs → impro…