Coval vs Unreal Speech

Comparing the features of Coval to Unreal Speech

Feature
Coval
Unreal Speech

Capability Features

Asynchronous Requests
Audio Inputs
Audio Replay
Built-in Metrics
latencyaccuracytool-call effectivenessinstruction compliance
Custom Environments
Custom Metrics
Dashboard Access
Fully Customizable Voice
Human-in-the-Loop
Max Audio Duration
10 hours
Max Monthly Characters
7000000000
Per-sentence Timestamps
Per-word Timestamps
Performance Alerts
Production Call Monitoring
Production Ready Infrastructure
Prompt Change Re-simulation
Regression Tracking
Scenario-Based Testing
Simulate Conversations
Streaming Alerts
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 Chat Compatible
Text-to-Speech API
/stream/speech/synthesisTasks/streamWithTimestamps
Transcripts as Input
Uptime SLA
99.9%
Usage Commercial Rights
Voice AI Features
Voice Parameter Control
SpeedPitch
WebSocket Streaming
Workflow Tracing
Workflow-Based Simulation

Integration Features

API Documentation
API Integration
PythonNode.jsReact NativeBash
Developer-Focused Integrations
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 Mentioned Integrations
No Pricing Information
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
Free Trial/Demo
Paid Plan Rollover
Subscription Plans
BasicPlusProEnterprise
Trial Period