--- title: On-Device AI with the Google Chrome Prompt API | daily.dev description: A step-by-step guide to using the Chrome On-Device Prompt API (Gemini Nano) to run AI locally in the browser. Covers enabling the required Chrome flags,... canonical: https://daily.dev/posts/on-device-ai-with-the-google-chrome-prompt-api-0jdr9blvw twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: On-Device AI with the Google Chrome Prompt API | daily.dev og:description: A step-by-step guide to using the Chrome On-Device Prompt API (Gemini Nano) to run AI locally in the browser. Covers enabling the required Chrome flags,... og:url: https://daily.dev/posts/on-device-ai-with-the-google-chrome-prompt-api-0jdr9blvw og:image: https://api.daily.dev/og/posts/0JDr9Blvw.png og:image:alt: On-Device AI with the Google Chrome Prompt API og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # On-Device AI with the Google Chrome Prompt API **[Playful Programming](https://daily.dev/sources/playfulprogramming)** · [@mainawycliffe](https://daily.dev/mainawycliffe) · 4 min read · 0 upvotes · 0 comments ## Summary A step-by-step guide to using the Chrome On-Device Prompt API (Gemini Nano) to run AI locally in the browser. Covers enabling the required Chrome flags, checking model availability, triggering the ~1.5 GB model download with progress tracking, prompting the model with optional system prompts, and cleaning up sessions. Angular signals are used to manage download state in a service. The API is Chrome-specific and experimental, with a small model and limited token count. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Getting Started with Chrome's window.ai Prompt API](https://daily.dev/posts/getting-started-with-chrome-s-window-ai-prompt-api-v9xmcyyfi) · SitePoint · 0 upvotes · 0 comments - [Chrome for Developers](https://daily.dev/posts/chrome-for-developers-3y0cobjqp) · Hacker News · 0 upvotes · 0 comments - [Google’s Prompt API](https://daily.dev/posts/google-s-prompt-api-axbyaybca) · CSS-Tricks · 4 upvotes · 1 comments - [Chrome Built-in AI Model: Call It Directly from a Web Page](https://daily.dev/posts/chrome-built-in-ai-model-call-it-directly-from-a-web-page-ixrlndn0t) · Medium · 1 upvotes · 0 comments --- Tags: [#webdev](https://daily.dev/tags/webdev), [#typescript](https://daily.dev/tags/typescript), [#angular](https://daily.dev/tags/angular) [View this post on daily.dev](https://daily.dev/posts/on-device-ai-with-the-google-chrome-prompt-api-0jdr9blvw) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"On-Device AI with the Google Chrome Prompt API","url":"https://daily.dev/posts/on-device-ai-with-the-google-chrome-prompt-api-0jdr9blvw","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/on-device-ai-with-the-google-chrome-prompt-api-0jdr9blvw"},"datePublished":"2026-03-16T21:47:14.853Z","dateModified":"2026-03-17T18:00:51.446Z","description":"A step-by-step guide to using the Chrome On-Device Prompt API (Gemini Nano) to run AI locally in the browser. 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