OpenAI Text To Speech vs iSpeech TTS & Speech API

Comparing the features of OpenAI Text To Speech to iSpeech TTS & Speech API

Feature
OpenAI Text To Speech
iSpeech TTS & Speech API

Capability Features

Age Selection
API Requests per Month
100000000
Audio Settings
Audio Speed Setting Range
1
Bookmark Page
Cloud and Embedded TTS
Country Selection
Create IVR Prompts
Create Speech Button
Custom Voice Cloning
Custom Voice Selection
AlloyEchoFableOnyxNovaShimmerAshCoralSage
Developer Signups
80000
Favorite Voice Option
Gender Selection
High Quality Voices
Integrated Audio Player
Open Source SDKs
Reset Filters
Sample Playback
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 Characteristics
NeutralProfessionalClearWarmFriendlyEngagingEnergeticExpressiveMatureExperiencedYoungOldFemaleMaleLivelyVibrantDynamicCheerfulCommunity-orientedWiseCalmKnowledgeable

Integration Features

API Integrations
Audiobook Support
Chrome Extension
Connected Vehicle Integration
Mobile Integration
SAPI Integration

Limitation Features

Pricing Information
Processing Delay
Registration Required for Downloads
TTS for Non-Commercial Use Only
Video Tutorial Requirement
Watch 30 seconds

Pricing Features

Free Tier
IVR Prompts Free Sample