Call AI vs iSpeech TTS & Speech API

Comparing the features of Call AI to iSpeech TTS & Speech API

Feature
Call AI
iSpeech TTS & Speech API

Capability Features

24/7 Availability
Account Management
API Requests per Month
100000000
Business Use Case Support
Customer supportSalesTrainingExecutive assistanceAI podcast hosts
Call Transcripts
Cloud and Embedded TTS
Create IVR Prompts
Custom AI Bot Creation
Custom Voice Cloning
Developer Signups
80000
Feedback-Based Improvement
Multiple AI Personas
Sophie (Therapist)Alex (Daily planner)Michelle (Parenting coach)Marvin (Tech support)Page (Idea partner)Ryan (Journaling pal)Custom AI bot
Open Source SDKs
Personal Memory (In Development)
Proactive AI Features
Scheduled Calls
SDK Availability
Speech Rate Adjustment
SlowRegularFast
Speech Recognition
Supported Language List
US EnglishUK EnglishAustralian EnglishUS SpanishChineseHong Kong ChineseTaiwan ChineseJapaneseKoreanCanadian EnglishHungarianBrazilian PortugueseEuropean PortugueseEuropean SpanishEuropean CzechEuropean DanishEuropean FinnishEuropean FrenchEuropean NorwegianEuropean DutchEuropean PolishEuropean ItalianEuropean TurkishEuropean GreekEuropean GermanRussianSwedishCanadian FrenchArabic
Talking Stickers
Text to Speech
Voice Customization

Integration Features

Audiobook Support
Calendar Integrations
Chrome Extension
Connected Vehicle Integration
Email Integration
Google Search Integration
Mobile Integration
Notion Integration
Phone Integration
Planned Google Meet Integration
Planned Microsoft Teams Integration
Planned Web Integration
Planned Zoom Integration
SAPI Integration

Limitation Features

Human Therapist Replacement Limitation
No API Mentioned
No Web Chat Yet
Payment Required After Free Minutes
Registration Required for Downloads
TTS for Non-Commercial Use Only

Pricing Features

Free Call Duration
4
Free Tier
IVR Prompts Free Sample
Pay-per-minute Rate
15 cents per minute