About

Prompt Lab (Laboratório do Prompt) helps anyone write better requests for AI assistants such as ChatGPT, Claude and Gemini.

Most bad answers come from incomplete requests. That is why the site organizes a request into 4 pillars: goal, context, format and limits. You answer one question per pillar and get a complete prompt, ready to copy.

How it works

The tips you see while typing are worked out in your own browser. When you click Generate prompt, the text of the pillars is sent to our server on Cloudflare, and an AI model writes the final prompt. You do not need an account, and saved prompts stay on your device.

How the site is funded

The site is free and supported by ads served by Google AdSense. The details are in the privacy policy.

Open source

The site's code is open. Suggestions, fixes and translations are welcome through the contact page.