SpokenLayer vs OpenAI Realtime API

Comparing the features of SpokenLayer to OpenAI Realtime API

Feature
SpokenLayer
OpenAI Realtime API

Capability Features

AI-Driven Audio Creation
Audience Development
Audio Ad Transformation
Audio Monetization
Audio Production Service
Book a Meeting
Contact Email Provided
info@spokenlayer.com
Custom Music and Sound Design
Data-Driven Campaigns
Enterprise Privacy Commitment
Expanded Model Support Planned
Five New Voices
5
For Publishers and Advertisers
PublishersAdvertisersPodcasters
Function Calling
Human and Automated Safety Monitoring
Human Voice Acting
Human Voice Talent
Interruption Handling
Newsletter Signup
No Training on Data Without Permission
Open-ended Host Prompts
Playground Access
Podcast Distribution
Prompt Caching Planned
Public Beta
Reference Client Available
Six Preset Voices
6
Smart Device Distribution
Social Media Presence
LinkedInXInstagramFacebook
Speech-to-Speech
Streaming Audio Inputs/Outputs
Streaming Platform Distribution
Supports Text and Audio Inputs
TextAudio
Synthetic Voicing
Ultra Low Latency
WebSocket Connection

Integration Features

Agora Integration
Chat Completions API Integration
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 API Mentioned
No Explicit File Format Support Listed
No New Asset Creation Needed
No Public Pricing
No Self-Service Signup
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
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