Retell AI vs Unreal Speech

Comparing the features of Retell AI to Unreal Speech

Feature
Retell AI
Unreal Speech

Capability Features

Agent Builder
Agent Testing
API Access
Appointment Scheduling
Asynchronous Requests
Auto-Sync Knowledge Base
Automatic Scalability
Millions of concurrent calls
Batch Calls
Branded Caller ID
Call History
Call Monitoring
Call Transfer Options
Dashboard Access
Edge Case Handling
Global Reach
Industry Compliance
SOC 2 Type 1&2HIPAAGDPR
LLM-Powered
Low Latency
500ms latency
Max Audio Duration
10 hours
Max Monthly Characters
7000000000
Multi-language Support
18+ languages
Multiple Deployment Channels
AI phone callsWeb callsSMSChat
Natural Language Conversations
Navigate Through IVR
No Concurrency Limits
Per-sentence Timestamps
Per-word Timestamps
Platform Uptime
99.99% uptime
Production Ready Infrastructure
Streaming Endpoint
Streaming Latency
0.3s
Supported Audio Codecs
libmp3lamepcm_mulaw
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
Verified Phone Numbers
Voice Parameter Control
SpeedPitch
Voicemail Detection
WebSocket Streaming

Integration Features

API Documentation
API Integration
PythonNode.jsReact NativeBash
CRM/Automation Integrations
Cal.comn8nGoHighLevelTwilioVonageOpenAI
Integrates with Any CRM
Integrates with Any Telephony
Integrates with Automation Platforms
Integrates with Databases
Sign In Methods
GoogleEmail
Supported Export Formats
MP3PCM µ-law
Telephony Integration
TwilioVonageTelnyxPlivoRingCentral

Limitation Features

Attribution Requirement
Free plan requires attribution
Max Characters /speech
3000
Max Characters /stream
1000
Max Characters /synthesisTasks
500000
No Desktop App Mentioned
No Mentioned Self-hosting
No Public Pricing Listed
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
Pricing Plan Details
Subscription Plans
BasicPlusProEnterprise
Trial Period