Handling Calls with WhatsApp Business API

[JimPresting]

Hi everyone,

I’ve set up complex RAG systems where the WhatsApp Business API responds in text, audio, or even with images and documents, and it works well. However, I’ve never worked on a system for handling calls to the Business API number. I’d like to build a call center for interacting with knowledge. This would obviously work best with custom GPT models, as RAG systems tend to have too much latency for real-time interaction.

Does anyone have resources or insights on how to connect calls to the GPT-4o Realtime model or potentially ElevenLabs’ latest real-time models (either option works)?

Thanks in advance!

[gabrieldwight]

Hi, is business api number related to phone number functions?