VanillaVoice vs OpenAI Realtime API

Comparing the features of VanillaVoice to OpenAI Realtime API

Feature
VanillaVoice
OpenAI Realtime API

Capability Features

Artificial Intelligence Voices
Child Voices
Download Audio
Enterprise Privacy Commitment
Expanded Model Support Planned
Five New Voices
5
Function Calling
Human and Automated Safety Monitoring
Human-like Voice
Interruption Handling
Language/Country Support
American EnglishBritish EnglishAustralian EnglishSpanishFrenchGermanChinese (Mandarin)ItalianPortugueseRussianPolishJapaneseDutchHindi
Multiple Voices Per Language
No Training on Data Without Permission
Playground Access
Prompt Caching Planned
Public Beta
Reference Client Available
Six Preset Voices
6
Social Sharing
ShareTweet
Speak Button
Speech-to-Speech
Streaming Audio Inputs/Outputs
Supports Text and Audio Inputs
TextAudio
Ultra Low Latency
Use Case: Explainer Videos
Use Case: Presentations
Use Case: Professional Videos
Use Case: Video Courses
Voice Expansion
Voice Options
MaleFemaleChild
WebSocket Connection

Integration Features

Agora Integration
API or Plugin Integration
Chat Completions API Integration
Downloadable File Formats
Not specified
LiveKit Integration
OpenAI Node.js SDK Planned
OpenAI Python SDK Planned
Supports GPT-4o
gpt-4o-realtime-preview
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
Simultaneous Sessions Limit Tier 5
100
Usage Limits
Not specified
Usage Policy Restriction

Other Features

Cookie Usage

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 Plan Details
Free
Pricing Text Input
$5/1M tokens
Pricing Text Output
$20/1M tokens
Trial Period