OpenAI Realtime API vs Speech Dream

Comparing the features of OpenAI Realtime API to Speech Dream

Feature
OpenAI Realtime API
Speech Dream

Capability Features

Audio File Download
Browser File Storage
Enterprise Privacy Commitment
Expanded Model Support Planned
Five New Voices
5
Function Calling
Human and Automated Safety Monitoring
Interruption Handling
No Account Required
No Data Tracking
No Training on Data Without Permission
No Usage Tracking
Playground Access
Prompt Caching Planned
Public Beta
Reference Client Available
Session-based API Key Storage
Session only
Six Preset Voices
6
Speech-to-Speech
Streaming Audio Inputs/Outputs
Supports Text and Audio Inputs
TextAudio
Text to Speech
Ultra Low Latency
Use Own API Key
Voice Language Support
EnglishGermanSpanishFrench
Web Interface
WebSocket Connection

Integration Features

Agora Integration
Chat Completions API Integration
LiveKit Integration
OpenAI Node.js SDK Planned
OpenAI Python SDK Planned
OpenAI TTS 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 Built-in API Key
No Cloud Storage
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 Usage with API Key
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