Silvia vs Unreal Speech

Comparing the features of Silvia to Unreal Speech

Feature
Silvia
Unreal Speech

Capability Features

Adaptive Dictation
Asynchronous Requests
Dashboard Access
Dictation Extension
Finish Speaking Detection
Max Audio Duration
10 hours
Max Monthly Characters
7000000000
Multilingual Input
Per-sentence Timestamps
Per-word Timestamps
Production Ready Infrastructure
Seamless Language Switching
Streaming Endpoint
Streaming Latency
0.3s
Supported Audio Codecs
libmp3lamepcm_mulaw
Supported Bitrates
320k256k192k128k96k64k48k32k16k
Supported Language List
US EnglishUK EnglishMandarin ChineseHindiSpanishPortugueseJapaneseFrenchItalian
Supported Voices
48
Supports English and Spanish
EnglishSpanish
Synchronous Requests
Text-to-Speech API
/stream/speech/synthesisTasks/streamWithTimestamps
Upcoming Language Support
FrenchRomanianGermanDutch
Uptime SLA
99.9%
Usage Commercial Rights
Voice Parameter Control
SpeedPitch
WebSocket Streaming

Integration Features

API Documentation
API Integration
PythonNode.jsReact NativeBash
App Store Availability
Chat Platform Integration
iMessageWhatsAppSignalTelegramMessengerany other app where you type
Sign In Methods
GoogleEmail
Supported Export Formats
MP3PCM µ-law

Limitation Features

Attribution Requirement
Free plan requires attribution
Max Characters /speech
3000
Max Characters /stream
1000
Max Characters /synthesisTasks
500000
No Android Support
No Mention of Export Options
No Web Platform
Voice Cloning

Other Features

Affiliate Program
Comparison to Competitors
AmazonMicrosoftGoogleElevenLabsPlay.ht

Pricing Features

Additional Usage Price
Basic - $16 per 1M charactersPlus - $12 per 1M charactersPro - $10 per 1M charactersEnterprise - $8 per 1M characters
Elite Plan Quota
625000000
Enterprise Plan Price
$4999/month
Free Characters Limit
250000
Free Plan Rollover
Free Tier
Paid Plan Rollover
Subscription Plans
BasicPlusProEnterprise
Trial Period