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The LanguageModel API prompts an on-device language model. Also known as the Prompt API.

Status

Limited availability

This feature received a negative standards position from at least one browser vendor. It's very unlikely to ever become Baseline in this current form.

MDN documentation

No MDN documentation found. You can search for the feature on MDN. If you believe that MDN has no documentation about this feature, you can open an issue on MDN's GitHub repository.

Specifications

http://webmachinelearning.github.io/prompt-api/

Browser support

Chrome 148 Released on 2026-05-05
Chrome Android ❌
Edge 148 Released on 2026-05-07
Firefox ❌ Vendor position : negative (concerns: interoperability)
Firefox for Android ❌ Vendor position : negative (concerns: interoperability)
Safari ❌ Vendor position : unknown (concerns: interoperability, privacy, portability)
Safari on iOS ❌ Vendor position : unknown (concerns: interoperability, privacy, portability)

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