Everyone has received a useless AI response and blamed the model. Most of the time it's the prompt — and the fix is cheaper than switching models.
Here's the structure that works.
The 4-part formula:ompt is the problem. Here's the structure that works.
The 4-part formula:
[ROLE] You are an expert in X.
[CONTEXT] We have Y, we need to do Z.
[TASK] Do W with these rules...
[FORMAT] Respond as a list / JSON / under N words.
Tips that pay off:
- Be specific about format — "respond with JSON fields name and price" beats "give me information";
- Give examples (few-shot) — 2-3 examples beat 10 lines of instructions;
- Ask for step-by-step on complex tasks;
- Control temperature — 0 for deterministic tasks, 0.7-1.0 for creativity;
- Iterate — treat prompts like code: versioned and testable.
Underrated trick: ask the model to list its assumptions before answering. It reveals ambiguity in your prompt faster than any review.
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