Retell AI vs SFX Engine

Comparing the features of Retell AI to SFX Engine

Feature
Retell AI
SFX Engine

Capability Features

Agent Builder
Agent Testing
API Access
Starter: API access, Creator/Pro: Full API access
Appointment Scheduling
Auto-Sync Knowledge Base
Automatic Scalability
Millions of concurrent calls
Background Music
Batch Calls
Branded Caller ID
Call History
Call Monitoring
Call Transfer Options
Commercial Use Rights
Edge Case Handling
Fine-Tuned Generation
Global Reach
Industry Compliance
SOC 2 Type 1&2HIPAAGDPR
Infinite Sound Variations
LLM-Powered
Low Latency
500ms latency
Multi-language Support
18+ languages
Multiple Deployment Channels
AI phone callsWeb callsSMSChat
Natural Language Conversations
Navigate Through IVR
No Concurrency Limits
Platform Uptime
99.99% uptime
Priority Feature Requests
Priority Support
Creator/Pro: Priority, Starter: Priority email, Basic: Basic community support
Royalty-Free Sound Effects
Sound Effect Generator
Studio Quality Output
Supported Use Cases
MoviesSongsVideosPodcastsGamesAppsSocial mediaAds
Verified Phone Numbers
Voicemail Detection

Integration Features

CRM/Automation Integrations
Cal.comn8nGoHighLevelTwilioVonageOpenAI
File Formats Supported
Not specified
Integrates with Any CRM
Integrates with Any Telephony
Integrates with Automation Platforms
Integrates with Databases
Platform Integration
Not specified
Telephony Integration
TwilioVonageTelnyxPlivoRingCentral

Limitation Features

Free Plan Limits
3 credits/month, basic support
Maximum Credits per Plan
Basic: 3/monthStarter: 600/yearCreator: 4800/yearPro: 18000/year
No Desktop App Mentioned
No Mentioned Self-hosting
No Public Pricing Listed

Other Features

Supported User Roles
Audio producersVideo editorsGame developers

Pricing Features

Basic Plan Credits
3
Creator Plan Credits
4800
CreatorPlan Monthly Price
$40/month
Credit-Based Usage
Custom Plans
Free Tier
No Credit Card Required
No Hidden Fees
No Subscription
Pricing Plan Details
Pro Plan Credits
18000
Pro Plan Monthly Price
$72/month
Promo Code Discount
35% off with code FIRST35
Starter Plan Credits
600
Starter Plan Price
$8/month