I'm usually an early adopter but wow every single browser except Firefox features AI integrations. It feels like a recipe for profound privacy leaks in the future. I suppose that's already a risk with OpenAI/Anthropic/Gemini/etc websites but this will increase the blast radius exponentially.
Safari's AI features run locally on your device. And they're limited to probably useful things like "summarize this page". I found this far more acceptable.
https://support.mozilla.org/en-US/kb/ai-chatbot. There's also right-click integrations and such that turn on when you use this. It's thankfully not as intrusive as the options from other browser makers.