Opera launches new web standard enabling users to run AI locally in their browser

Meta description: Opera WebAI lets users run open-weight AI models locally in Opera One, with Mac support for Apple's on-device foundation model and privacy-focused previews.

Tags: Opera, WebAI, local AI, open-weight models, browser privacy

Featured image: Abstract technology style showing browser windows, local processing chips, and neural network lines, without real people, logos, or text.

Opera has introduced WebAI, a new web standard that lets users run AI models directly in its browser without relying on the cloud. The move puts Opera's privacy-focused browser work on a more concrete footing: instead of sending prompts and personal data to remote services, users can process AI tasks on the device they already own.

Background: Privacy Concerns Push Browsers Toward Local AI

AI assistants have become more powerful, and many now touch personal information as part of everyday use. This growth has made privacy a growing concern for users, who often share large amounts of personal data with AI chatbots without clearly understanding how that data is stored or used.

Locally run models offer an alternative to that pattern. Instead of sending information to a company's cloud server, the processing happens on the user's own device. That does not eliminate every privacy risk, but it gives users more control over what leaves their computer. It also fits with Opera's long-standing emphasis on digital privacy as a core selling point.

Development: WebAI Grows From Opera's On-Device Model Work

WebAI did not appear out of nowhere. Opera says the standard grew out of earlier work to bring locally run models into its browsers. The company describes WebAI as designed to work with a variety of AI models, rather than being tied to any one system.

Among the examples Opera gives is Google's Gemma, an open-weight model that Google first introduced two years ago. On Macs, WebAI also supports Apple's on-device foundation model. The company says WebAI is built to support a wide range of open-weight AI systems.

Open-weight models bring practical advantages. They are typically free to download and use, and their underlying model weights are publicly available, which gives developers more freedom to customize how the models work. Opera also notes that open-weight models are not the same as fully open-source software: they still come with some restrictions.

Latest Progress: An Opt-In Preview in Opera One

Opera is making WebAI available as an early preview in its flagship Opera One browser. The feature is not automatic: users have to choose to opt into it. Opera says Opera GX, its browser built for gamers and streamers, and Opera Neon, its browser that uses AI agents to perform tasks, will soon get the same treatment.

The company says WebAI allows anyone to generate text, classify content, and understand how pieces of information relate directly in the browser. In its announcement, Opera said developers can add AI features without running AI infrastructure or paying for every request. It also said users do not need AI subscriptions, the information handled by local AI stays on their own device, and they remain in control of the AI on their computer.

What to Watch Next: Hardware Limits and Broader Rollout

The trade-off is performance. Running AI models locally puts more demand on a user's computer, which can affect how fast or smooth the browser feels. Opera notes that model performance will depend on the device's hardware.

For now, WebAI sits at an early stage: it is an opt-in preview in Opera One, with expansion to Opera GX and Opera Neon still ahead. The next question is how far on-device AI can go without cloud support while remaining practical on everyday hardware.