AI Prompt Generator for ChatGPT, Claude & Gemini

Turn a rough request into a prompt with a role, a clear task and useful constraints. This is a template engine, not AI: instant, predictable and private, with your text assembled in your browser.

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The five parts of a strong prompt

A useful prompt answers the questions a collaborator would ask before starting work. You do not need a long opening speech. Give the model a job, a concrete task and the context needed to carry it out. Then define the boundaries and the shape of the answer.

Part	Question it answers	Example
Role	What perspective should guide the work?	Act as an experienced onboarding copywriter.
Task	What should the model deliver?	Write a welcome email for new trial users.
Context	What does it need to know?	The app helps agencies organize client projects.
Constraints	What must the answer include or avoid?	Include one action and avoid invented features.
Output format	What should the result look like?	Short paragraphs, about 150 words.

Put source material inside clear delimiters so the model can tell instructions from content. This builder uses triple quotes around the background block. If you need a structured prompt with labelled data fields, try the JSON prompt generator. For behavior that should apply throughout a conversation, use the system prompt generator.

A weak prompt and a stronger version

Consider a fictional project management app called Acorn. The stronger version below makes the audience, source facts and desired action explicit. It gives you a result you can assess against the brief, rather than an answer you have to reshape from scratch.

Before	After
Write a good welcome email.	Act as an onboarding copywriter. Write a welcome email for agency owners starting an Acorn trial. Acorn organizes client projects, and the trial lasts 14 days. Ask the reader to create their first project. Use friendly, plain language and short paragraphs, about 150 words. Include one call to action and avoid inventing features.

Asking for a specific format and length removes most rework. An example can steer the answer more strongly than adjectives, so add a short sample to your background when you have a format you want to match. “Use this two-sentence opening pattern” gives clearer direction than adding several words such as polished, engaging and professional.

How to use the prompt builder

Choose the goal that matches the work. Each goal sets a fitting role, an example request and a small set of relevant requirements.
Name what you want and add any background or source material. Use facts you can verify instead of asking the model to fill gaps.
Check the role, audience, tone and length. Edit the role if you need a particular perspective; goal changes will then preserve your choice.
Set the output format and any must-include or must-avoid details. Review the assembled prompt, copy it and paste it into your chat app.

Select clarifying questions when missing details could change the result. Request three options when you want alternatives to compare. The format example option asks the model to show a sample before the full answer; it does not supply a finished example itself.

When a builder is enough

This builder is enough when you know the deliverable and need to make the instructions complete. It is a prompt generator with no AI: a fixed template engine assembles your choices locally, so there is no model call or waiting for generated suggestions. You supply the judgment and source facts.

Reach for the free prompt directory when you would rather adapt a finished brief. The marketing and SEO prompts and career prompts provide text you can copy for recurring work. For a focused career example, see the cover letter prompt guide. Check the details against your actual situation before using any template.

Frequently asked questions

Is this a prompt generator with no AI?

Yes, it is a template engine that assembles your fields using fixed rules. It does not call an AI model, upload your text or store your inputs. The same choices produce the same prompt instantly in your browser.

Can I use these prompts with ChatGPT, Claude or Gemini?

Yes, the output is ordinary text that you can copy into a chat model. It spells out the role, task, background, requirements and output format. Review the result and adapt any instruction that does not fit your task.

What makes a good AI prompt?

A good prompt gives the model a role, a specific task, context, constraints and an output format. Replace vague requests with a clear audience and a concrete deliverable. A short example of the desired output can steer the answer more strongly than extra adjectives.

How do I add source material to a prompt?

Paste it into the background field. The builder surrounds it with triple quotes so the model can distinguish source material from instructions. Any triple quotes inside your source are escaped in the copied prompt to keep the boundary clear.

How long should an AI prompt be?

Long enough to state the task, the context the model cannot guess, your constraints and the format you want. For most everyday requests that is a few sentences plus a short list of requirements. Pasted source material can make a prompt much longer, and that is fine as long as it sits inside clear delimiters.

When should I use a ready-made prompt instead?

Use a ready-made prompt when you want a worked starting point for a familiar task such as a cover letter or marketing brief. Use this builder when you already know the deliverable and need to organize your instructions. Review either kind of prompt for facts and requirements specific to your situation.