Microsoft is opening its on-device AI models up to web apps in Edge

Web developers will be able to start leveraging on-device AI in Microsoft’s Edge browser soon, using new APIs that can give their web apps access to Microsoft’s Phi-4-mini model, the company announced at its Build conference today. And Microsoft says the API will be cross-platform, so it sounds like these APIs will work with the Edge browser in macOS, as well. 

The 3.8-billion-parameter Phi-4-mini is Microsoft’s latest small, on-device model, rolled out in February alongside the company’s larger Phi-4.