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Opera has proposed a new standard enabling websites and browser extensions to run and leverage local AI models, aiming to standardize on-device AI capabilities across the web ecosystem.
Opera launches WebAI, a feature that lets websites run AI models locally on the user's computer through the browser.
Opera introduced WebAI, a new web standard that lets users run open-weight AI models like Google's Gemma and Apple's on-device foundation model directly in the browser without cloud reliance, debuting as an early preview in Opera One.
Opera's team tested browser snapshot formats for AI agents, finding identical pass rates but significantly lower token cost with their compressed format (opera-compact), which eliminates redundant ARIA attributes and repeated URLs. They released it as an open-source MCP server.
Google Chrome is enforcing Manifest V3, which disables workarounds for ad blockers like uBlock Origin, and Microsoft Edge and Opera are expected to implement similar restrictions.