A Complete Guide to Prompt Engineering: How to Communicate Effectively with Large Language Models Artificial intelligence has changed how we work, learn, and create. At the center of this change is Prompt Engineering—the practice of writing effective inputs that guide large language models (LLMs) to produce useful, accurate, and reliable outputs. This guide explores prompt engineering in detail, based entirely on the source material, while adapting it for an international audience. The focus is on clarity, practicality, and real-world usability. Introduction When interacting with a large language model, the prompt—the input you provide—is the single most important factor that influences …