Welcome to WebAI Studio
WebAI Studio is the premier developer environment and prototyping playground for Chrome's Built-in AI APIs. It empowers you to build, test, and benchmark entirely local, on-device AI capabilities directly within the browser—zero API keys, zero cloud costs, and user data that never leaves the device.
Core Concepts
Implementation Guide
Learn the prerequisites and the standard implementation lifecycle — availability, creation, and inference — for running on-device models.
Model Management
Understand how to check hardware support, trigger model weight downloads, and track network progress interactively.
Aborting Operations
Cancel session creation, downloads, and in-flight inference cleanly with AbortSignal.
Error Handling
Know every exception the APIs can throw and how to degrade gracefully when they do.
API Reference
Prompt API
LanguageModelThe core instruction-tuned model for zero-shot, n-shot, tools, and custom tasks.
Summarizer
SummarizerCondense long articles, meetings, or logs into structured key points or TL;DRs.
Writer
WriterGenerate net-new content like emails, posts, or articles from scratch.
Rewriter
RewriterAdjust tone, change length, or beautifully refine existing text blocks.
Translator
TranslatorReal-time, offline translation utilizing specialized dynamic language packs.
Language Detector
LanguageDetectorIdentify the language of arbitrary text rapidly with confidence scoring.
Proofreader
ProofreaderDeep syntactic analysis to natively find and correct grammar and spelling errors.
Semantic Embedder
SemanticEmbedderTurn text into on-device vectors to power semantic search and local RAG.