WebAI by Opera - Let websites use AI running on your computer

You can now access local AI built into the browser to start creating your own browser capabilities instead of relying on others' extensions.

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Hi everyone!

WebAI lets websites and extensions use AI models running on your computer, without sending page content to a cloud AI service.

built the inference engine right into the browser. Developers get for text generation, classification, and finding related content.

Opera also made , including one that quizzes you on an article and another that highlights paragraphs relevant to your project. These small tools make total sense to run locally.

WebAI is now an opt-in early preview in . It supports local models including Gemma and Apple's on-device foundation model on Macs.

classification and related content seem like sensible first uses for a model already in the browser

i would want the site permissions to make it clear which page can use it and what context that page gets

Love to see Opera embracing local models first on this, super cool and definitely the right direction IMO

The three APIs are what caught my eye, especially the related-content one, since that is the one where a page would need the most context. When a site asks for related content, does it get back passages it can highlight directly, or does it have to re-find them in the page itself? And if the user only has one local model installed, does the site get to say which capability it needs, or does WebAI just offer whatever model is there?

A very nice and extra useful addition. Hopefully, all security and data privacy measures are in place properly.

How does a website negotiate which local model it gets to use? Wondering what stops a random site from quietly spinning up the biggest model available and eating my battery for breakfast.