TalkStack AI vs OpenAI Realtime API

Comparing the features of TalkStack AI to OpenAI Realtime API

Feature
TalkStack AI
OpenAI Realtime API

Capability Features

AI & Human Collaboration
AI Native Call Center Stack
Appointment Booking
Automated Reminders
Automatic Call Recording & Chat Display
Available 24/7
Continuous Learning
Custom Workflows
Dashboard Customization
Enterprise Privacy Commitment
Enterprise-Grade Security
Expanded Model Support Planned
Five New Voices
5
Function Calling
Handle High Volume
Thousands of calls
High Automation Rate
98
Human Agent Escalation
Human and Automated Safety Monitoring
Interruption Handling
Lead Qualification
Multilingual Support
Over 20 languages
No Code Required
No Training on Data Without Permission
Omnichannel Support
TextVoiceDigital Messaging
Playground Access
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
Tier 1-2 Support Automation
Ultra Low Latency
Visualised Insights
Voice and Text Support
VoiceText
Voice Cloning
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
WhatsApp Integration

Limitation Features

AI Disclosure Requirement
Audio Only Modality (Initially)
Lower Session Limits Tiers 1-4
Lower than 100
No Public Pricing Listed
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 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