Definition
Prompt Engineering
Prompt engineering is the practice of writing clear instructions, context and examples for an AI model so it produces accurate, useful and consistent results.

The same AI model can give a vague answer or an excellent one depending on how it's asked. Good prompts state the role, the task, the audience, the format and any rules, and include relevant information or examples.
For businesses, prompt engineering often means building a shared library of tested prompts for common tasks, so every team member gets reliable results instead of starting from scratch.
Prompt engineering in practice
Instead of asking "write a follow-up email", a salesperson uses a team prompt that includes the client's industry, the meeting notes, the next step, the tone and a 120-word limit. The result needs far less editing.
Related terms
Common questions about prompt engineering
Do I need technical skills for prompt engineering?
No. Most of it is clear writing: explaining the task, the context and the result you want.
What makes a good prompt?
A clear task, relevant context, the desired format and length, any rules to follow and, ideally, an example of a good result.
Is prompt engineering still important as AI improves?
Yes. Better models need less coaching, but clear instructions and context still make results more accurate and consistent.
What is a prompt library?
A shared collection of tested prompts for common tasks, so a team gets consistent results and doesn't reinvent prompts each time.