ClosedAI is a Chrome extension designed to modify web content by replacing mentions of "OpenAI" with "ClosedAI." This tool visually emphasizes the change by striking through the original term in bold red while presenting the new term in bold green. The extension serves as a playful critique of the OpenAI brand, making it a distinctive addition to the browser's functionality.

This free add-on falls under the category of browser tools, providing users with a unique way to engage with online content. It is particularly useful for those who want to alter their web experience or make a statement about the ongoing discussions surrounding AI technologies. With its straightforward functionality, ClosedAI enhances the browsing experience in a lighthearted manner.