BASELINE NowYouCanUse.com
Limited Availability

LanguageModel

The LanguageModel API prompts an on-device language model. Also known as the Prompt API.
Baseline Status: This feature is currently Limited (not yet Baseline). Latest engine implementation shipped on May 5, 2026.
Desktop Browser Engine Support
Google Chrome
148
Supported
Mozilla Firefox
—
Unsupported
Apple Safari
—
Unsupported
Microsoft Edge
—
Unsupported
Mobile Browser Engine Support
Chrome Android
—
Firefox Android
—
Safari iOS
—
Specifications and References
Specification ↗ Feature XML ↗
MDN Browser Compat Data Keys:
api.LanguageModel ↗ api.LanguageModel.append ↗ api.LanguageModel.availability_static ↗ api.LanguageModel.clone ↗ api.LanguageModel.contextUsage ↗ api.LanguageModel.contextWindow ↗ api.LanguageModel.contextoverflow_event ↗ api.LanguageModel.create_static ↗ api.LanguageModel.destroy ↗ api.LanguageModel.measureContextUsage ↗ api.LanguageModel.prompt ↗ api.LanguageModel.promptStreaming ↗
id: languagemodel