fine-tuning
fine-tuning — Taking an existing AI model and training it a bit more on your own examples, so it behaves the way you want.
Most people don't need to fine-tune — prompts are usually enough. Fine-tuning earns its keep when you need a very specific style, tone, or format that you can't reliably get with prompts alone.
"We fine-tuned it on our data." "That needs fine-tuning, not prompting."