Voice Assistant vs OpenAI Realtime API

Comparing the features of Voice Assistant to OpenAI Realtime API

Feature
Voice Assistant
OpenAI Realtime API

Capability Features

Community Project Library
Community Project Refresh
Create Voice Agents
Custom Voice Agent Creation
Enterprise Privacy Commitment
Expanded Model Support Planned
File Export Options
Five New Voices
5
Function Calling
Human and Automated Safety Monitoring
Industry Templates
Customer ServiceLanguage TutorPersonal Fitness CoachHealthcare Helper
Interruption Handling
No Training on Data Without Permission
Playground Access
Production-Ready Deployment
Project Categories
HealthcareEntertainmentCustomer ServicePersonal AssistantEducation
Project Date Metadata
Project Views Counter
Prompt Caching Planned
Public Beta
Reference Client Available
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
Third-party Integrations
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
Quota or Limits
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 Information
Pricing Text Input
$5/1M tokens
Pricing Text Output
$20/1M tokens