LangCall vs OpenAI Realtime API

Comparing the features of LangCall to OpenAI Realtime API

Feature
LangCall
OpenAI Realtime API

Capability Features

24/7 Frontline Reception
After-Hours Support
Call Monitoring Dashboard
Call Queuing and Hold Handling
Call Recording
Conversation Summary
Custom Voice Cloning
Customizable Assistant
Enterprise Privacy Commitment
Expanded Model Support Planned
FAQ Handling
Five New Voices
5
Fully Automated Calls
Function Calling
Human and Automated Safety Monitoring
Inbound Call Screening
Inbound Calls
Interruptible Calls
Interruption Handling
Lead Generation Tools
No Training on Data Without Permission
Outbound Calls
Phone Menu Navigation
Playground Access
Prompt Caching Planned
Public Beta
Real-Time Web Interface
Reference Client Available
Six Preset Voices
6
Speech-to-Speech
Streaming Audio Inputs/Outputs
Sub-Second Latency
Supports Text and Audio Inputs
TextAudio
Transfer-to-Me Calls
Ultra Low Latency
Ultra-High Quality Voices
Unique AI Phone Number
WebSocket Connection

Integration Features

Agora Integration
API Access
Chat Completions API Integration
File Formats Supported
LiveKit Integration
OpenAI Node.js SDK Planned
OpenAI Python SDK Planned
Supports GPT-4o
gpt-4o-realtime-preview
Third-Party API Integration
Twilio Voice API Integration

Limitation Features

AI Disclosure Requirement
Audio Only Modality (Initially)
Limit Free Tier Calls
Limited time of AI calls
Lower Session Limits Tiers 1-4
Lower than 100
No Custom Voice Cloning on Lower Tiers
No Human Agent Integration
No International Number Support Stated
No Mobile App Mentioned
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
Basic Plan Call Limit
60
Basic Plan Overage Price
$0.06/min
Basic Plan Price
$5.99/month
Essential Plan Call Limit
120
Essential Plan Overage Price
$0.053/min
Essentials Plan Price Monthly
$12.99/month
Free Tier
No Credit Card Needed for Free Tier
No Free Tier
Premium Plan Call Limit
300
Premium Plan Overage Price
$0.049/min
Premium Plan Price
$29.99/month
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