Retell AI vs ChatTTS

Comparing the features of Retell AI to ChatTTS

Feature
Retell AI
ChatTTS

Capability Features

Agent Builder
Agent Testing
API Access
Appointment Scheduling
Auto-Sync Knowledge Base
Automatic Scalability
Millions of concurrent calls
Batch Calls
Branded Caller ID
Call History
Call Monitoring
Call Transfer Options
Community Support
Continuous Improvement
Controllability and Security
Detailed Documentation
Dialog Task Optimization
Easy to Use
Edge Case Handling
Fine-tuning Supported
Full Model Training Hours
100000
Global Reach
High-Fidelity Speech Synthesis
Industry Compliance
SOC 2 Type 1&2HIPAAGDPR
LLM-Powered
Low Latency
500ms latency
Multi-language Support
18+ languages
Multilingual Support
ChineseEnglish
Multiple Deployment Channels
AI phone callsWeb callsSMSChat
Natural Language Conversations
Navigate Through IVR
No Concurrency Limits
Open Source
Open Source Model Training Hours
40000
Platform Uptime
99.99% uptime
Sample Rate for Audio Output
24000
Text to Speech
Verified Phone Numbers
Voice Customization Options
Voicemail Detection

Integration Features

API Integrations
CRM/Automation Integrations
Cal.comn8nGoHighLevelTwilioVonageOpenAI
Gradio Demo Integration
Integrates with Any CRM
Integrates with Any Telephony
Integrates with Automation Platforms
Integrates with Databases
Platform Compatibility
Web applicationsMobile appsDesktop softwareEmbedded systems
PyTorch Dependency
SDK Programming Language Support
Multiple programming languages
Telephony Integration
TwilioVonageTelnyxPlivoRingCentral

Limitation Features

No Desktop App Mentioned
No Mentioned Self-hosting
No Public Pricing Listed
Not All Languages Supported
Requires Significant Compute
High computational resources needed
Speech Quality Depends on Input
Varies with text complexity and length

Pricing Features

Free Tier
No Explicit Paid Plans Shown
Pricing Plan Details