Kukarella vs OpenAI Realtime API

Comparing the features of Kukarella to OpenAI Realtime API

Feature
Kukarella
OpenAI Realtime API

Capability Features

AI Summaries
Audio Exports
MP3WAV
Background Music & SFX
Content Rephrasing
Credit Usage Hierarchy
free > grace > subscription > top-up
Enterprise Privacy Commitment
Expanded Model Support Planned
Five New Voices
5
Function Calling
Human and Automated Safety Monitoring
Image to Audio Story
Interruption Handling
Multi-Character Dialogue
Multi-language Support
No Training on Data Without Permission
Playground Access
Prompt Caching Planned
Public Beta
Reference Client Available
Script Writing from Prompt
Six Preset Voices
6
Speech-to-Speech
Streaming Audio Inputs/Outputs
Supports Text and Audio Inputs
TextAudio
Text and File Input
Type directlyPaste scriptUpload PDFUpload DOCUpload TXT
Transcription
Translation
Ultra Low Latency
Use Cases
EducationBusiness TrainingContent CreationMarketingCustomer ServicePodcastingAudiobooks
Visual Generation
Voice Adjustment Controls
stylepitchspeed
Voice Cloning
Voice Library Size
1800
WebSocket Connection

Integration Features

Agora Integration
Audio Export Formats
MP3WAV
Chat Completions API Integration
Document Upload Formats
PDFDOCTXT
LiveKit Integration
OpenAI Node.js SDK Planned
OpenAI Python SDK Planned
Payment Methods
Credit CardDebit CardApple PayGoogle Pay
Supports GPT-4o
gpt-4o-realtime-preview
Twilio Voice API Integration

Limitation Features

Advanced AI Tools Paid Only
AI Disclosure Requirement
API Availability
Audio Only Modality (Initially)
Commercial Rights Paid Only
Limit Free Tier Minutes
10
Lower Session Limits Tiers 1-4
Lower than 100
Maximum Visuals on Free Tier
8
No Simultaneous Session Limit Anymore
Platform Integration
Premium Voices
Simultaneous Sessions Limit Tier 5
100
Text Character Limit Free Tier
10000
Usage Policy Restriction

Pricing Features

15-Day Refund Guarantee
15 days
Approximate Audio Input Price
$0.06/minute
Approximate Audio Output Price
$0.24/minute
Character Credit System
Free Tier
Grace Credits After Downgrade
30
Included Credits Example
Character: 10,000Minutes: 10Visuals: 8
Minute Credit System
Monthly and Annual Billing
MonthlyAnnual
No Credit Card Required
No Free Tier
Premium Voice Multiplier
Certain premium Custom Voices are billed at ×10 characters
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
Refund Processing Time
1 business day
Subscription Credit Rollover
Subscription Credits Bundle
Top-Up Credits Never Expire