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Retell AI
Compared to OpenAI Text To Speech
Retell AI vs OpenAI Text To Speech
Comparing the features of Retell AI to OpenAI Text To Speech
Feature
Retell AI
OpenAI Text To Speech
Capability Features
Age Selection
Agent Builder
Agent Testing
API Access
Appointment Scheduling
Audio Settings
Audio Speed Setting Range
1
Auto-Sync Knowledge Base
Automatic Scalability
Millions of concurrent calls
Batch Calls
Bookmark Page
Branded Caller ID
Call History
Call Monitoring
Call Transfer Options
Country Selection
Create Speech Button
Custom Voice Selection
Alloy
Echo
Fable
Onyx
Nova
Shimmer
Ash
Coral
Sage
Edge Case Handling
Favorite Voice Option
Gender Selection
Global Reach
High Quality Voices
Industry Compliance
SOC 2 Type 1&2
HIPAA
GDPR
Integrated Audio Player
LLM-Powered
Low Latency
500ms latency
Multi-language Support
18+ languages
Multiple Deployment Channels
AI phone calls
Web calls
SMS
Chat
Natural Language Conversations
Navigate Through IVR
No Concurrency Limits
Platform Uptime
99.99% uptime
Reset Filters
Sample Playback
Text to Speech
Verified Phone Numbers
Voice Characteristics
Neutral
Professional
Clear
Warm
Friendly
Engaging
Energetic
Expressive
Mature
Experienced
Young
Old
Female
Male
Lively
Vibrant
Dynamic
Cheerful
Community-oriented
Wise
Calm
Knowledgeable
Voicemail Detection
Integration Features
API Integrations
CRM/Automation Integrations
Cal.com
n8n
GoHighLevel
Twilio
Vonage
OpenAI
Integrates with Any CRM
Integrates with Any Telephony
Integrates with Automation Platforms
Integrates with Databases
Telephony Integration
Twilio
Vonage
Telnyx
Plivo
RingCentral
Limitation Features
No Desktop App Mentioned
No Mentioned Self-hosting
No Public Pricing Listed
Pricing Information
Processing Delay
Video Tutorial Requirement
Watch 30 seconds
Pricing Features
Free Tier
Pricing Plan Details