Hearling vs OpenAI Realtime API

Comparing the features of Hearling to OpenAI Realtime API

Feature
Hearling
OpenAI Realtime API

Capability Features

Audio File Download
Batch Clip Creation
50
Cloud Storage
Enterprise Privacy Commitment
Expanded Model Support Planned
Five New Voices
5
Fully Customizable Voice
Function Calling
History Retention
Human and Automated Safety Monitoring
Interruption Handling
Language/Country Support
34
No Training on Data Without Permission
Playground Access
Prompt Caching Planned
Public Beta
Reference Client Available
Six Preset Voices
6
Speech-to-Speech
Streaming Audio Inputs/Outputs
Supports Text and Audio Inputs
TextAudio
Text to Speech
Ultra Low Latency
Voice Variety
200
WebSocket Connection

Integration Features

Agora Integration
API Integrations
Chat Completions API Integration
File Formats Supported
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
Sign Up Required
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 Characters Quota
5000
Free Tier
No Free Tier
Paid Plan Price
$5 per month
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