Free online tools
Prompt builder
A good prompt separates who the model should be, what it knows, what it should do and how it should answer. Fill in the fields and the tool arranges them into a structured prompt.
For example: an experienced technical editor.
One constraint per line.
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How to use it
- Describe the role the model should answer in.
- Add context and state the task unambiguously.
- List constraints, one per line, and the expected reply format.
- Choose Markdown or XML, copy the prompt and paste it into the model.
Why structure helps
When instructions, data and expectations are mixed into one paragraph, a model more easily skips something. Clear sections help it tell the instruction from the material it should process.
Markdown or XML
Markdown headings are readable for people and work well with most models. XML tags separate the parts unambiguously, which helps with long prompts that include pasted documents. Pick the one that is easier for you to maintain.
What makes the biggest difference
A specific task, context and a clearly described reply format. A role helps less than people usually assume, so do not let it replace the task description. Check the result on a few examples and refine the prompt.
Frequently asked questions
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