Echo vs OpenAI Realtime API

Comparing the features of Echo to OpenAI Realtime API

Feature
Echo
OpenAI Realtime API

Capability Features

AI Transcription
Enterprise Privacy Commitment
Expanded Model Support Planned
Five New Voices
5
Function Calling
Human and Automated Safety Monitoring
Interruption Handling
No Training on Data Without Permission
Playground Access
Prompt Caching Planned
Public Beta
Reference Client Available
Save & Organize Recordings
Six Preset Voices
6
Speech to Text
Speech-to-Speech
Streaming Audio Inputs/Outputs
Supports Text and Audio Inputs
TextAudio
Ultra Low Latency
Voice Commenting
WebSocket Connection
Works on Multiple Platforms
Google SuiteNotionMiroJira

Integration Features

Agora Integration
Chat Completions API Integration
Chrome Extension
Google Suite Integration
Jira Integration
LiveKit Integration
Miro Integration
Notion 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)
Extension Required
Lower Session Limits Tiers 1-4
Lower than 100
No Simultaneous Session Limit Anymore
Primary Integration Google Suite
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/Demo
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