What is the GPTZero browser extension?

The GPTZero browser extension is called GPTZero: AI Detection & Writing Replay. It works in Chrome, Edge, and Firefox. Use it to check whether the text you are reading was written by a human or by AI.

Install the extension, then log in. Until you do, it shows Log in to start scanning.

On the free plan you can run up to 25 AI scans per month, and automatic scans are limited to 50 per hour. GPTZero Premium removes those limits.