Hume AI
New
Build voice AI that understands how people feel, not just what they say. EVI reads emotional tone in real time and responds with appropriate voice expression.
Audio
★ 4.3(980 reviews)freemiumOverview
Hume AI builds empathic voice intelligence — AI that detects emotional expression in speech and responds with appropriate emotional tone. The Empathic Voice Interface (EVI) is an API for building voice assistants that understand not just words but how they're said: pitch, pacing, tone, and emotional valence all inform the response. Used in mental health support apps, customer service, and any context where emotional nuance determines outcome quality.
Key Features
- Empathic Voice Interface (EVI) with real-time emotion detection
- Expression Measurement API scoring 48 emotional dimensions from speech
- Responds with contextually appropriate emotional voice tone
- Interruption handling and natural conversation pacing
- Customizable voice persona and emotional range
- Multimodal input — combines speech tone with transcript for full context
Pros
- • Unique emotional intelligence layer no other voice API offers
- • EVI handles interruptions naturally — doesn't require explicit turn-taking
- • Expression Measurement API is standalone — works with any speech input
Cons
- • Emotional detection accuracy varies significantly across languages
- • Niche use cases — overkill for simple voice bots that don't require emotional nuance
- • API pricing can be hard to estimate before building
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