Thor from Google DeepMind walks through how to set up the Gemini Live API with Twilio and deploy it to Google Cloud Run, so anyone can call your Gemini voice agent from a regular phone number. Inbound and outbound calls, real-time audio streaming, and the same agent running in the browser and on the phone from a single deployment.

What's covered: Using the GenAI Python SDK Twilio example from GitHub, building inbound and outbound call handlers with FastAPI and WebSockets, handling audio format conversion between Gemini and Twilio, deploying to Google Cloud Run with Secret Manager, and using Antigravity coding agent skills to accelerate the build.
]
Grab your Gemini API key at Google AI Studio and your Twilio credentials at twilio.com to get started. Full example and setup instructions linked below.

Resources: 
Find the tutorial →https://goo.gle/4cokC0t 
Find the code→https://goo.gle/4tYFYXV  

What are you building with Gemini Live? Drop it in the comments.

Chapters
0:00 - Live Demo: Calling the Gemini Assistant on the Phone
0:51 - Introduction to Gemini 3.1 Flash Live & Twilio
1:16 - GitHub Examples & The Gen AI Python SDK
1:46 - Building the Integration with Coding Agents
2:57 - Code Walkthrough: FastAPI & WebSockets Setup
3:43 - Handling Twilio Inbound & Outbound Endpoints
5:25 - Audio Conversion (PCM to mu-law) & Partner Integrations
6:50 - Deployment to Google Cloud Run
7:35 - Web Browser Client Demo: Accents & Camera Vision

Speaker: Thor Schaeff
Products Mentioned:  Google AI, Gemini

Google for Developers

A walkthrough of integrating Gemini Live API with Twilio for phone-based voice AI agents, deployed on Google Cloud Run. The setup uses the Google Gen AI Python SDK with a FastAPI server that proxies WebSocket connections between Twilio media streams and the Gemini Live API. Key technical details include audio format conversion (Gemini outputs 24kHz 16-bit PCM while Twilio expects 8kHz mu-law), inbound/outbound call handling via TwiML, and Secret Manager for API key management. The same server also supports browser-based interaction with camera sharing. Partner integrations like LiveKit, Pipe Chat, and Agora are mentioned as alternatives for those who want to avoid handling audio conversion manually.

Add Telephony to a Gemini Live Agent