This is a new-ish Google AI feature that is still in “Preview”. It allows you to have “low-latency, real-time voice and vision interactions with Gemini. It processes continuous streams of audio, images, and text to deliver immediate, human-like responses , creating a natural conversational experience for your users”
This is one of those building blocks for interesting applications.
So far, it supports 70 languages.
You can try the Live API in Google AI Studio today - aistudio.google.com
Just make sure you are in the playground and select - Gemini 3.5 Live Translate Preview on the model selector