WebAI StudioDebug & Supercharge Chrome's Built-In AI
Interactive DevTools suite, profiler, cloud router, and the Jev Decisions API polyfill.
One inspector for all of Chrome's Built-In AI APIs
Chrome's Built-In AI APIs expose on-device models like Gemini Nano directly to web pages via native JavaScript globals (LanguageModel, Summarizer, Translator, LanguageDetector, Proofreader, Writer, and Rewriter). The WebAI DevTools panel adds a dedicated tab to Chrome DevTools so you can manage model downloads, test prompts, profile token speed, inspect live API calls, and route requests to cloud or local fallbacks.
Have you heard about Jev? It's in your browser now.
Make typed decisions (boolean, choice, score) in one forward pass with calibrated probabilities—served locally on every page via window.DecisionModel and Laya on LiteRT.js.
window.DecisionModel...Usage
Example
Everything in One Extension
Built for web developers shipping on-device AI.
Decisions API Polyfill
window.DecisionModel on every page, powered locally by Laya and LiteRT.js.
Cloud & Local Routing
Route Built-In AI calls to Gemini Nano, Cloud Gemini API, or LM Studio / Ollama.
Performance Profiler
Track TTFT, creation time, inference time, tokens/sec, and chars/sec with P90/P99 stats.
Session History & Export
Inspect session lifecycles (create + method calls), filter by API or time, and export JSON.
Diagnosis & Debugging
Check model status, API installation capabilities, and missing chrome://flags.
Chrome Side Panel
See whether the active origin uses Built-In AI APIs and inspect live sessions across tabs.