Prompt Reverse-Engineer

You paste a sample of AI-generated text (or describe an AI-generated image), and the tool analyzes its style, structure, and tone to infer prompts that would likely produce similar output. For text you get minimal, detailed, and chain-of-thought prompt variants plus a system prompt guess; for images you get prompt versions tailored to Midjourney, DALL-E, Stable Diffusion, and Flux.

No — that is not possible for any tool. Many different prompts can produce very similar outputs, so the result is an informed reconstruction, not a recovery. The confidence percentage indicates how strongly the output signals a particular prompting style. Treat the inferred prompts as a starting point and refine them through testing.

The tool works from a written description rather than an image upload. Switch to image mode and describe the picture in detail — subject, art style, lighting, composition, colors, and mood. The more specific your description, the closer the inferred prompts will be to something that reproduces the look.

Yes. Your input is sent to our server, where an AI model performs the analysis. Avoid pasting confidential documents or personal data — the tool only needs a representative sample of the output style, not the full sensitive content.

The tool guesses whether the text came from a model family like GPT-4, Claude, or Gemini based on stylistic markers, but this is the least certain part of the analysis. Modern models overlap heavily in style, and edited or fine-tuned outputs blur the signals further, so treat the model guess as informed speculation.

Yes, it is free to use with no signup. The only requirement is at least 20 characters of input, though longer samples give the analysis more signal to work with.