Prompt GeneratorFree AI tool, works with any LLM

Free AI Prompt Generator

From a rough idea
to a real system prompt.

AI expands your role, task, tone and constraints into a polished, production-ready system prompt, not just your raw input reformatted.

Try it freeAll free tools

Real AI expansion, not templates · 3 free generations a day · Works with any LLM

Prompt GeneratorReal AI expansion, not templates3 free generations a dayWorks with any LLM

Define Your Agent

3 generations left today

Who is the AI? What expertise does it have?

Be specific about what the AI should do

0/2000

Formal and business-oriented

Add Constraints (Optional)

Any limitations or rules the AI should follow

0/1000

Ready to Generate

Fill in the required fields on the left and click Generate to create your AI agent prompt

Want the whole platform?

Whizo AI gives your agency client workspaces, a content calendar with client approvals, and Ask Whizo. Try free for 14 days.

Try free for 14 days

How to Build Better AI Prompts

Great prompts are the foundation of effective AI agents. Use structured sections for Role, Task, Tone, and Constraints to get consistent, high-quality responses.

Prompt Engineering Best Practices

Define a clear role:Tell the AI who it is and what expertise it has
Be specific about the task:Clear instructions lead to better outputs
Set the tone:Match the communication style to your use case
Add constraints:Limitations help keep responses focused and relevant

Using Generated Prompts

Copy your generated prompt into any LLM (GPT-4, Claude, GLM-4) or use it with Whizo AI's agent runtime for autonomous task execution.

01 / How it works

Three steps, a few seconds.

  1. 01Describe the agent

    Set the role, the task, the tone and any constraints.

  2. 02Let AI expand it

    Your input becomes a structured, production-ready system prompt.

  3. 03Use it anywhere

    Copy it into any LLM or agent builder.

Most prompts fail on what they leave out: the role, the constraints, the tone. This fills the gaps for you.

02 / In the full platform

Like this tool? It's one small part of Whizo.

Ask Whizo

An AI that knows your agency.

In Whizo, Ask Whizo answers questions about your clients and takes the next step: it creates the task, moves the deal or finds what is waiting on approval.

See Ask Whizo

03 / Questions

Questions, answered.

What is an AI prompt generator?

An AI prompt generator helps you craft well-structured system prompts for AI models like ChatGPT, Claude, or Gemini. A good prompt includes a clear role, task definition, tone instruction, constraints, and output format — this tool builds all of that for you.

What makes a good AI agent prompt?

A good AI agent prompt defines: (1) the role the AI should play, (2) the specific task or goal, (3) the tone and communication style, (4) any constraints or rules to follow, and (5) the expected output format. Structured prompts produce significantly more consistent and accurate results.

Which AI models does this prompt generator work with?

Prompts generated by this tool work with ChatGPT (GPT-4o, GPT-4), Claude (Anthropic), Gemini (Google), Llama, and other instruction-following LLMs. The prompt format follows best practices that generalize across all major AI models.

Is this prompt generator free?

Yes, free with up to 3 generations daily and no signup required. Whizo AI also has its own AI agents for agencies, switched on by the Whizo team: see the AI agents page.

Prompts are a start.
Whizo does the work.

Start free trial

Try free for 14 days. No card needed.