Octave 2 is Hume AI's second-generation emotionally expressive voice model, built on Hume's research into the relationship between speech acoustics and human emotional perception. Unlike standard TTS systems that focus on naturalness alone, Octave 2 is designed to produce speech that conveys appropriate emotional subtext — matching the affective tone of spoken content to listener expectations.
Hume's positioning centers on empathic AI, and Octave 2 is their voice layer for that vision. It fits applications in mental health support, companionship AI, and customer experience platforms where emotionally appropriate responses improve user outcomes. The model pairs with Hume's EVI (Empathic Voice Interface) for full conversation-level emotion awareness.
Key Features
Emotionally nuanced speech generation grounded in Hume's affective science research
Voice output adapts tonal quality to match sentiment context
Integrates with Hume EVI for full empathic conversation loops
Supports a range of vocal styles from calm to energetic
Designed for high-stakes interpersonal contexts requiring emotional accuracy
API-accessible for embedding in third-party conversational platforms
Ideal Use Cases
Mental health and emotional support AI companions
Customer service agents handling complaint and de-escalation scenarios
Empathic tutoring and coaching applications
Accessibility tools for users who benefit from emotionally aware narration
Interactive storytelling where character emotion shapes experience
Example Prompts for Octave 2
Technical Specifications
| Provider | Hume AI |
| Category | Audio |
| Modality | Text -> Audio |
Frequently Asked Questions
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