SNACK: 3-line summary
- Opera has introduced a WebAI early preview in Opera One.
- Websites and extensions can process text locally, without a separate AI app or server.
- The feature is opt-in and supports 64-bit Intel/AMD Windows PCs and Apple silicon Macs.
Opera One’s new WebAI early preview lets compatible websites and extensions use AI models running on your computer. Announced on October 27, the opt-in feature supports 64-bit Intel or AMD Windows PCs and Apple silicon Macs.
Snackgirls react
AIKO: A website asking permission to use a local model is an interesting building block. I’d like to see what small extension makers try without a cloud bill ticking up per request.
Nea: I’d like to try a quiz after a long game-lore article. It might help me notice which connections I’ve missed before I go looking for more background.
Local processing, with access you control
WebAI is a proposed web standard for letting websites and extensions use AI through the browser. Opera’s implementation supports text generation, content classification and finding relationships between pieces of information using compatible local models. This local feature needs no separate AI app, local server, API key or AI subscription, and incurs no per-request cloud AI fees.
Content processed by the local model does not need to be sent to a cloud AI provider. Site-specific permissions let you choose which websites can access local AI, and you can disable WebAI at any time. That does not mean all browser traffic or extension networking stays on your device.
Reading tools you install, not built-in features
Opera’s experimental extensions offer a few examples of what developers could build. Project Lens colors article paragraphs according to their relevance to a project you describe, while Got It? generates a short quiz about the article you have just read.
Semantic Art turns an article into a moving visualization, with similar sentences becoming visual neighbors. These are separate experimental examples to install, not built-in Opera tools that automatically run on every page.
Turn it on in Opera One
Download or update Opera One, open Opera AI in Settings, then turn on “Enable Web AI API.” Nothing is downloaded before you opt in; enabling it downloads a compatible model, which may take a few minutes. You can then install an example extension and open it from the extensions menu.
The preview supports 64-bit Windows PCs with Intel or AMD processors and Macs with Apple silicon. Intel Macs, Linux and Windows on Arm are not supported. Response speed depends on your computer’s hardware.
Sources and checked date: October 29, 2026
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