Sesame vs Unreal Speech

Comparing the features of Sesame to Unreal Speech

Feature
Sesame
Unreal Speech

Capability Features

Asynchronous Requests
Consistent Personality
Context Awareness
Conversational Dynamics
Conversational Speech Generation
Dashboard Access
Dataset Size
1 million hours
Emotional Intelligence
Evaluation Suite
Max Audio Duration
10 hours
Max Monthly Characters
7000000000
Model Sizes
Tiny: 1B backbone, 100M decoderSmall: 3B backbone, 250M decoderMedium: 8B backbone, 300M decoder
Multiple Speaker Handling
Objective Metrics
Word Error RateSpeaker SimilarityHomograph DisambiguationPronunciation Consistency
Partial Multilingual Support Planned
Planned for 20+ languages
Per-sentence Timestamps
Per-word Timestamps
Production Ready Infrastructure
Pronunciation Correction
Sequence Length
2048
Single-Stage Model
Streaming Endpoint
Streaming Latency
0.3s
Subjective Metrics
Comparative Mean Opinion Score
Supported Audio Codecs
libmp3lamepcm_mulaw
Supported Bitrates
320k256k192k128k96k64k48k32k16k
Supported Language List
US EnglishUK EnglishMandarin ChineseHindiSpanishPortugueseJapaneseFrenchItalian
Supported Voices
48
Synchronous Requests
Text and Audio Input
TextAudio
Text-to-Speech API
/stream/speech/synthesisTasks/streamWithTimestamps
Training Epochs
5
Uptime SLA
99.9%
Usage Commercial Rights
Voice Parameter Control
SpeedPitch
WebSocket Streaming

Integration Features

API Documentation
API Integration
PythonNode.jsReact NativeBash
GitHub Release
LLama Architecture Backbone
Mimi Split-RVQ Tokenizer
Sign In Methods
GoogleEmail
Supported Export Formats
MP3PCM µ-law

Limitation Features

Attribution Requirement
Free plan requires attribution
Cannot Model Conversation Structure
English Language Dominance
Max Characters /speech
3000
Max Characters /stream
1000
Max Characters /synthesisTasks
500000
Memory Bottleneck in Training
No Pre-trained Language Model Use
Real-Time Generation Delay
RVQ time-to-first-audio scales poorly
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 Preview
Free Tier
Open Source
Apache 2.0
Paid Plan Rollover
Subscription Plans
BasicPlusProEnterprise
Trial Period