AssemblyAI vs Unreal Speech

Comparing the features of AssemblyAI to Unreal Speech

Feature
AssemblyAI
Unreal Speech

Capability Features

Asynchronous Requests
Auto-Language Detection
Dashboard Access
Industry Leading Accuracy
Keyterms Prompting
Max Audio Duration
10 hours
Max Monthly Characters
7000000000
No-Code Playground
Per-sentence Timestamps
Per-word Timestamps
Preferred by End Users
Preferred by 73% of end users
Production Ready Infrastructure
Reduced Hallucinations
Up to 30% less
Scalable Platform
Smart Formatting
Speaker Diarization
Speech Understanding
Speech-to-Text
Streaming Endpoint
Streaming Latency
0.3s
Supported Audio Codecs
libmp3lamepcm_mulaw
Supported Audio Types
Pre-recorded and streaming audio
Supported Bitrates
320k256k192k128k96k64k48k32k16k
Supported Language List
US EnglishUK EnglishMandarin ChineseHindiSpanishPortugueseJapaneseFrenchItalian
Supported Voices
48
Synchronous Requests
Text-to-Speech API
/stream/speech/synthesisTasks/streamWithTimestamps
Uptime SLA
99.9%
Usage Commercial Rights
Voice Parameter Control
SpeedPitch
WebSocket Streaming

Integration Features

API Documentation
API Integration
PythonNode.jsReact NativeBash
API Integrations
Platform Integrations
API
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 Explicit Feature Limits
No Throttling
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 API Trial
Free Characters Limit
250000
Free Plan Rollover
Free Tier
No Contracts
Paid Plan Rollover
Pay as you go pricing
Subscription Plans
BasicPlusProEnterprise
Trial Period