Part 2: How to Build an AI Voice Agent using OpenAI Realtime API: RAG + Function Calling

Опубликовано: 19 Февраль 2026
на канале: Bart Slodyczka
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PART 3 OUT NOW:    • Part 3: How to Build an AI Voice Agent usi...  

Part 2: Upgrading the OpenAI Realtime API Voice Agent

In this tutorial, we enhance our original Voice Agent with:
RAG (Retrieval-Augmented Generation)
Function calling
Caller history
AI answering the phone first

Watch till the end for valuable insights and unique implementation techniques!

📺 Watch Part 1:    • Part 1: How to Build an AI Voice Agent usi...  
📺 Watch Part 3:    • Part 3: How to Build an AI Voice Agent usi...  
📺 AI SMS Assistant:    • How to Build an Advanced AI SMS Assistant  

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Timestamps
00:00 Realtime API Call Demo
01:08 Overview Of The Build
5:15 Breakdown of Code And Make.com Automation
08:28 How Twilio API Works
13:48 Main Configuration And Function Calls
16:00 (WATCH THIS) How To Make AI Speak First
18:57 Function Call Breakdown
26:35 Setting Up Replit With Our Code
28:45 Testing Replit And Connecting To Twilio
30:25 Deploying Replit
33:05 Outro