Chrome 148 stable opens the Prompt API to the web
Opened the Prompt API to the web in Chrome 148 stable — for extensions it has been stable since Chrome 138. Web pages access the browser's built-in Gemini Nano directly, with support for text, image and audio input and for constraining responses with regular expressions and JSON schemas. Requirements: 22GB of free space, and more than 4GB of VRAM or 16GB of RAM and 4 or more cores
Why it matters
A stable-channel case of an on-device model exposed as a web platform API rather than an app. Responsibility for model distribution and storage management passes to the browser vendor
Source — Primary sources first; secondary reports are labelled “Press”
Officialdeveloper.chrome.comhttps://developer.chrome.com/release-notes/148Added in Week 36, 2026 · See that week