Prompt Laboratory
Write a prompt. Revise it. Compare the answers, and judge them yourself before the Lab weighs in.
You write the prompt. I do what you said. If you don’t like what I did, consider what you said.
This isn’t a prompt template gallery. You won’t find “10 prompts that will change your life.” The Lab lets you see what your prompt actually tells the model — and how changing your words changes what you get.
Here is how it works. You write a prompt and get an answer. You revise the prompt and get a second answer beside the first. The first time you revise, the Lab also sends your original prompt again, unchanged, because the same prompt can return a different answer each time. Then you decide which answer you would actually use. The Lab shows you how your original prompt reads as soon as the first answer lands. Its read of the difference comes only after you decide: what changed, which edit most plausibly caused it, and what each prompt told the model.
Think of each answer as a witness. The rerun is a second witness to the same event. Before you credit your edit with a difference, check whether the two witnesses already disagree.
Bring a real task if you have one, the kind you would hand a model at work, with invented names and facts in place of anything confidential. Type it the way you normally would. Don’t try to be clever. The point is to see what your normal prompt gets you, and then what changes when you improve it. If you don’t have a real task, try a starter; after your first answer, a Work Drawer of practice files appears under the revision box.
You don’t need a $30 book on prompt engineering. The companies that built these models publish free guidance on prompting them, and they update it when the models change. Books don’t. The Lab helps you practice what that guidance teaches, and these are the pages.