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AI Companions
Bring digital characters to life with voices that feel truly human. From virtual companions to animated storytellers, we give characters a vivid emotional range and a deeply authentic presence—designed to match any personality, mood, or moment.
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Case studies
Where Innovation Becomes Reality
Vapi partners with Hume AI to offer developers the most affordable emotionally intelligent voice for phone calling
Built with
Octave Text-to-Speech
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Hume AI brings expressive speech to Cerebras-powered Qwen reasoning models
Built with
Empathic Voice Interface
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Hume AI brings expressive speech to Groq-powered Kimi K2
Built with
Empathic Voice Interface
Hume AI brings expressive speech to SambaNova-powered language models
Built with
Empathic Voice Interface
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Democratizing Audiobook Creation with Hume's TTS
Built with
Octave Text-to-Speech
Preventing Harmful Deepfakes with Hume's EVI
Built with
Empathic Voice Interface

Expression Measurement for Emotional Intelligence
Built with
Expression Measurement

Voice AI for Preventative Healthcare
Built with
Empathic Voice Interface

Voice AI for Interview Prep
Built with
Empathic Voice Interface
Voice AI for Social Anxiety Support
Built with
Empathic Voice Interface
Voice AI for Music Support
Built with
Empathic Voice Interface

Expression Measurement for Voice Agent Testing
Built with
Expression Measurement
Emotion AI for Market Prediction
Built with
Expression Measurement

Voice AI for Recruiting
Built with
Empathic Voice Interface

Voice AI for Mock Interviews
Built with
Empathic Voice Interface
Voice AI for Language Learning
Built with
Empathic Voice Interface

Voice AI for Financial Analysis
Built with
Empathic Voice Interface
Voice AI for Customer Support
Built with
Empathic Voice Interface
Voice AI for Mental Health
Built with
Empathic Voice Interface

Voice AI for Mental Health Coaching
Built with
Empathic Voice Interface
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Emotion AI for Journaling
Built with
Expression Measurement
Voice AI for Consumer Research
Built with
Empathic Voice Interface
Anonymous Fortune 100 Automotive Company
Voice AI for Automotive UX
Built with
Empathic Voice Interface
Voice AI for Eldercare
Built with
Empathic Voice Interface
Voice AI for Thought Leadership
Built with
Empathic Voice Interface

Emotion AI for Personal Growth Companions
Built with
Expression Measurement
Anonymous Robotics Company
Emotion AI for Language Learning Toys
Built with
Expression Measurement
Emotion AI for Audience Growth
Built with
Expression Measurement
our research
We research foundation models and how to align them with human well-being
Text to Speech
Octave
Octave understands what words mean in context, so it can predict emotions, cadence, and more.
Speech to Speech
Empathic Voice Interface
The world's most realistic and instructable speech-to-speech model
Multimodal
Expression Measurement
Measure emotional expression with unmatched precision. One API, four modalities, hundreds of dimensions of emotional expression.