October 10, 2025
Filipi asks Gemini how to build a WhatsApp voice agent with Gemini in a WhatsApp voice call powered by Gemini.
Facebook recently launched the WhatsApp Business Calling API, which integrates voice calls into WhatsApp's chat threads interface. WhatsApp users can initiate voice calls to verified business accounts. Businesses can get customers' permission to start a voice call.
Businesses can answer the calls inside WhatsApp, route the calls to a call center, or ... answer the calls with a @pipecat_ai voice agent.
See below for a guide to WhatsApp voice AI and a github repo with code you can use as a starting point.
If you're in San Francisco this weekend, apply to the Gemini x Pipecat hackathon at YC on Saturday. Engineers from Google and from the Pipecat core team will be there to help you build WhatsApp voice agents, or anything else that combines Gemini models and multimodal, conversation AI.
Pipecat WhatsApp voice agent guide[1]
Starter kit:
[2]
Application for Saturday hackathon at YC:
[3]