AI Voice Agent Builder vs OpenAI Realtime API

Comparing the features of AI Voice Agent Builder to OpenAI Realtime API

Feature
AI Voice Agent Builder
OpenAI Realtime API

Capability Features

24/7 Customer Support
Audio Playback Example
Customer Support Automation
Demo Booking
Enterprise Privacy Commitment
Expanded Model Support Planned
Five New Voices
5
Function Calling
Human and Automated Safety Monitoring
Interruption Handling
Lead Collection
Missed Call Handling
Multiple Industry Use Cases
Mystery Shopping Calls
Natural Conversation
No Coding Required
No Training on Data Without Permission
Playground Access
Prompt Caching Planned
Public Beta
Reference Client Available
Restaurant Assistant
Six Preset Voices
6
Speech-to-Speech
Streaming Audio Inputs/Outputs
Supports Text and Audio Inputs
TextAudio
Ultra Low Latency
WebSocket Connection

Integration Features

Agora Integration
Chat Completions API Integration
LiveKit Integration
OpenAI Node.js SDK Planned
OpenAI Python SDK Planned
Supports GPT-4o
gpt-4o-realtime-preview
Twilio Voice API Integration

Limitation Features

AI Disclosure Requirement
Audio Only Modality (Initially)
Lower Session Limits Tiers 1-4
Lower than 100
No Simultaneous Session Limit Anymore
Simultaneous Sessions Limit Tier 5
100
Usage Policy Restriction

Pricing Features

Approximate Audio Input Price
$0.06/minute
Approximate Audio Output Price
$0.24/minute
Free Tier
No Free Tier
Pricing Audio Input
$100/1M tokens
Pricing Audio Output
$200/1M tokens
Pricing Cached Audio Input
$20/1M tokens
Pricing Cached Text Input
$2.50/1M tokens
Pricing Text Input
$5/1M tokens
Pricing Text Output
$20/1M tokens