AI Voice Agent vs OpenAI Realtime API

Comparing the features of AI Voice Agent to OpenAI Realtime API

Feature
AI Voice Agent
OpenAI Realtime API

Capability Features

1-on-1 Engineer Calls
Actionable Insights
Advanced AI Algorithms
AI Receptionist
Appointment Scheduling
Automated Sales Notifications
Call Transcripts & Recordings
Customizable Outbound Call Flow
Enterprise Privacy Commitment
Expanded Model Support Planned
Five New Voices
5
Full Automation
Function Calling
Human and Automated Safety Monitoring
In-Depth Analytics
Instant Lead Qualification
Interruption Handling
Knowledge Bases - Pro
Unlimited
Knowledge Bases - Starter
1
Knowledge Bases - Unlimited
3
Languages Spoken - Pro
+3
Languages Spoken - Starter
1
Languages Spoken - Unlimited
2
Lead Nurturing
Lead Qualification
Monthly AI Updates
No Training on Data Without Permission
Outbound Calls - Unlimited/Pro
Personalized AI Solutions
Playground Access
Priority Technical Support
Prompt Caching Planned
Public Beta
Reference Client Available
Reminders Automation
Simultaneous Calls - Starter
1
Simultaneous Calls Capability
+20
Six Preset Voices
6
Spam Call Filtering
Speech-to-Speech
Streaming Audio Inputs/Outputs
Supports Text and Audio Inputs
TextAudio
Ultra Low Latency
Unlimited Contacts
Voice, SMS, and Email Followup
VoiceSMSEmail
WebSocket Connection

Integration Features

Agora Integration
API Integrations
Cal.com Integration
Chat Completions API Integration
Connects to 7,000+ Apps
CRM Integration
GHL Integration
Google Calendar Integration
LiveKit Integration
OpenAI Node.js SDK Planned
OpenAI Python SDK Planned
Platform Integrations
Supports GPT-4o
gpt-4o-realtime-preview
Sync with Existing Systems
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
Outbound Calls
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 Trial
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
Pro Included Minutes
Unlimited
Pro Overage Cost
Included
Pro Plan Price
$2,997 setup, $987/month
Starter Included Minutes
175
Starter Overage Cost
$0.35/min
Starter Plan Price
$119 setup, $197/month
Unlimited Included Minutes
500
Unlimited Overage Cost
$0.25/min
Unlimited Plan Price
$350 setup, $387/month