Outspeed vs OpenAI Realtime API

Comparing the features of Outspeed to OpenAI Realtime API

Feature
Outspeed
OpenAI Realtime API

Capability Features

Documentation Available
Emotive AI Voice
Enterprise Privacy Commitment
Expanded Model Support Planned
Five New Voices
5
Function Calling
High Concurrency
Human and Automated Safety Monitoring
Interruption Handling
Low Latency
Minutes Served
1M+
Multi-language Support
Natural Prosody and Emotion
No Training on Data Without Permission
Playground Access
Prompt Caching Planned
Public Beta
Quick Integration
Real-Time Voice Generation
Reference Client Available
Scalable Platform
Simple API
Six Preset Voices
6
Speech-to-Speech
Streaming Audio Inputs/Outputs
Supports Text and Audio Inputs
TextAudio
TTS Voice
Ultra Low Latency
Unlimited Use
Voice for AI Companions
WebSocket Connection
White Glove Support

Integration Features

Agora Integration
API Integrations
Chat Completions API Integration
LiveKit Integration
OpenAI Node.js SDK Planned
OpenAI Python SDK Planned
SDK Integration
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 Explicit Usage Quotas
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 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 Text Input
$5/1M tokens
Pricing Text Output
$20/1M tokens