[tux3]

Firefox already has something similar natively, but it's not enabled by default. If you turn on the new sidebar they have an AI panel, which basically looks like an iframe to the Claude/OAI/Gemini/etc chat interface. Different from Orbit.

[dbdoskey]

That sidebar doesn't have the ability to do any actions on the browser tab, or have the data form the browser as a context in any way. It is just a simple iframe.

[Vinnl]

If you click the three-dots menu above the iframe, you can select "Show shortcut when selecting text". That allows you to select text and then provide that as context to an AI prompt.

(At least, that's how I understand it - I have the feature turned off myself.)