Vapi vs SFX Engine

Comparing the features of Vapi to SFX Engine

Feature
Vapi
SFX Engine

Capability Features

A/B Experiments
AI Guardrails
API Access
Starter: API access, Creator/Pro: Full API access
API Configurability
4.2K+ configuration points
API-First Architecture
Automated Test Execution
Automatic Scalability
Millions of calls
Background Music
Bring Your Own Models
Commercial Use Rights
Community Support
13000
Custom Phone Number
Dedicated Deployment Engineer
Documentation
Enterprise Compliance
SOC2HIPAAPCI
Fine-Tuned Generation
Inbound Calls
Infinite Sound Variations
Multi-language Support
100+ languages
No-code/Low-code Workflow
Outbound Calls
Prebuilt Templates
1000s
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
Tool Calling
Ultra-low Latency
Sub-500ms
Uptime SLA
99.99% uptime

Integration Features

Client SDK
React (web SDK)
Downloadable SDK ZIP
File Formats Supported
Not specified
Github Repository
Integrations Information
40+ apps
OpenAI Integration
openaigpt-4o
Platform Integration
Not specified
Server SDKs
TypeScriptPythoncURL

Limitation Features

Free Plan Limits
3 credits/month, basic support
Maximum Credits per Plan
Basic: 3/monthStarter: 600/yearCreator: 4800/yearPro: 18000/year
No Built-in Telephony Provider Mentioned
No Explicit Pricing Details
No Explicit Usage Quotas Listed
No File Format Support 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
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