PromptLab

Prompt Comparison Tool

Paste two versions of a prompt. Words that were added or removed are highlighted, and a short summary explains which parts changed, such as lighting added or camera detail removed.

How to use it

  1. Paste the original prompt on the left and the new one on the right.
  2. Press Compare.
  3. Green is new, red is removed. Read the summary for which sections changed.

Frequently asked questions

Can I send a prompt here from the optimizer?

Yes. The optimizer has a Compare button that fills this page with your original and the rebuilt prompt.

Does it compare meaning or only words?

Words. It highlights what changed and reports section-level changes using the same keyword rules as the optimizer. It cannot tell you which version will produce a better image.

Related tools

AI Prompt OptimizerAI Prompt Generator

See it in practice

Browse prompts with the exact settings and method to recreate them.

Photo prompts Video prompts