Fwiw, this is a very experimental API and we're not really promoting this as we know the API shape will have to change. It's only available by enabling a flag so we're working with a lot of developers via the preview program (link below)
Overview: https://developer.chrome.com/docs/ai/built-in
Sign-up: https://docs.google.com/forms/d/e/1FAIpQLSfZXeiwj9KO9jMctffH...