Hume AI vs Sesame

Comparing the features of Hume AI to Sesame

Feature
Hume AI
Sesame

Capability Features

Consistent Personality
Context Awareness
Conversational AI
Conversational Dynamics
Conversational Speech Generation
Dataset Size
1 million hours
Emotion Instruction
Emotional Intelligence
Evaluation Suite
Game and AI Character Use Case
High Quality Voice
Languages Supported
EnglishJapaneseKoreanSpanishFrenchPortugueseItalianGermanRussianHindiArabic
Latency
<200ms
LLM-Powered TTS
Media Creation Use Case
Model Sizes
Tiny: 1B backbone, 100M decoderSmall: 3B backbone, 250M decoderMedium: 8B backbone, 300M decoder
Multimodal AI
Multiple Speaker Handling
Objective Metrics
Word Error RateSpeaker SimilarityHomograph DisambiguationPronunciation Consistency
Partial Multilingual Support Planned
Planned for 20+ languages
Phone Call Use Case
Pronunciation Correction
Sequence Length
2048
Single-Stage Model
Speech-to-Speech API
Subjective Metrics
Comparative Mean Opinion Score
Text and Audio Input
TextAudio
Text to Speech
Training Epochs
5
Voice Cloning
Voice Design

Integration Features

API Integration With LLMs
HumeClaude Sonnet 4.5Grok 4 FastGPT 5+20 more
Developer SDKs
Python SDKTypescript SDKSwift SDKReact SDKC# SDK
GitHub Release
LLama Architecture Backbone
Mimi Split-RVQ Tokenizer

Limitation Features

Cannot Model Conversation Structure
English Language Dominance
Memory Bottleneck in Training
No Pre-trained Language Model Use
Real-Time Generation Delay
RVQ time-to-first-audio scales poorly
Text Input Limit
500

Pricing Features

Free Preview
Free Tier
Open Source
Apache 2.0