What you give the model.
THE DEFINITION
Everything you send: your instruction, context, examples, and material to work on.
WHY IT MATTERS SO MUCH
The same model produces very different output depending on how it is asked.
Most disappointing results come from the prompt.
WHAT A GOOD PROMPT CONTAINS
The task Context about your situation Who the output is for Length and format What to avoid Any material to work from
WHAT THE MODEL KNOWS
Only what is in front of it.
It knows nothing about your business, your audience or what you meant.
IS IT ENGINEERING
Not in any technical sense. It is clear instruction-giving.
The skill is the same as briefing a capable assistant who has never met you.
RELATED TERMS
Context window, system prompt, prompt injection.