Each free AI prompt tool here does one job. The two template generators listed below assemble a structured prompt from a short form, right in your browser, so nothing you type is sent anywhere. The ChatGPT prompt generator, the prompt optimizer and the image prompt tools linked on this page send your request to a language model on our server and return the result.
Which tool to use
- You know the task but not how to phrase it: the AI prompt generator turns a few fields into a complete prompt for any chat model.
- You write for Claude: the Claude prompt generator builds the same parts in XML tags, the structure Anthropic's documentation recommends.
- You already have a prompt that underperforms: the prompt optimizer rewrites it.
- You want a picture: the ChatGPT image prompt generator and the Midjourney prompt generator write detailed image briefs.
- You edit photos with Gemini: start from the ready Nano Banana prompts and change the details to match your picture.
The tools side by side
| Tool | You give it | You get | Runs |
|---|---|---|---|
| AI prompt generator | A task, plus optional role, audience, context, format, tone, length, example and rules | A prompt in Markdown sections | In your browser, instantly |
| Claude prompt generator | The same form | A prompt in XML tags | In your browser, instantly |
| ChatGPT prompt generator | A role and a task | A prompt written by a model | On our server, up to a minute |
| Prompt optimizer | A role, a task and your current prompt | A rewritten prompt | On our server, up to a minute |
| ChatGPT image prompt generator | An image description and optional style details | An image prompt for ChatGPT | On our server |
| Midjourney prompt generator | An image description and optional style keywords | A Midjourney prompt | On our server, up to 10 seconds |
The browser tools are the right start when you know what you want and need it in a clean structure. The server tools help when you have only a rough idea, or a prompt that keeps giving weak answers. Whichever you use, treat the result as a first draft: run it once, see what is off, and change the part that caused it.
To start from a finished example instead, browse the prompt library, sorted by model and by task. The prompt engineering guide explains why the structure these tools produce works.