Free AI Prompt Generator for ChatGPT, Claude, Gemini & Grok

The Free AI Prompt Generator for ChatGPT, Claude, Gemini & Grok helps you turn a vague question into a clear, structured prompt tailored to the model you’re using. It supports a range of systems, including ChatGPT, Claude, Gemini, Grok, Midjourney, Nano Banana and Veo, so the wording fits the expected output style for each.

You can start from scratch with a topic or goal and get a ready-to-use prompt, or paste an existing prompt and have it optimised for clearer responses. There’s also a library of example prompts if you need inspiration or want to see different approaches to a task.

• Generates new prompts from a brief idea
• Refines and optimises existing prompts
• Offers example prompts for inspiration

Each result is tuned for the target model’s needs, whether that means more visual detail for an image model or explicit output formatting for a text-focused assistant. The tool is free and available at https://aipromptgenerator.app/.