BrowserAI

On desktop browsers, BrowserAI adds an AI assistant that answers questions about the page you are on.

BrowserAI is an AI browser extension that gives instant answers from YouTube videos, Gmail emails, PDFs and ordinary websites, and it works in multiple languages.

It is a desktop extension only, so there is no mobile version.

Pricing is pay-as-you-use.

You buy tokens, and purchased tokens do not expire.

The catch is that tokens cannot be exchanged, refunded or transferred once bought.

Summarizing a long YouTube video uses a lot of them, so watch your balance if video is your main use.

Clearing earlier chats saves tokens, but later answers may become less accurate because the AI loses that context.

Privacy is a selling point.

BrowserAI does not store chats, messages, queries or collected text on its servers, and it does not track your activity or the sites you visit.

PDF files are held only temporarily and are deleted when you close the tab.