https://developer.chrome.com/docs/ai/prompt-api
>With the Prompt API, you can send natural language requests to Gemini Nano in the browser.
Also, the next version of Gemini Nano will be based directly on Gemma 4 (so not distilled, not Gemini at all except for the name)[2].
So no, it's not a frontier model. Those don't run on your phone or in your browser.
[1]: https://developer.android.com/blog/posts/ml-kit-s-prompt-api...
[2]: https://android-developers.googleblog.com/2026/04/AI-Core-De...
Also, distillation is how most of these smaller models are made from the biggest models. That process largely defines the frontier along most of the curve.