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VoiceHume AI

Hume AI

Emotionally intelligent voice AI — speech-to-speech (EVI) and expressive TTS (Octave).

Categories
VoiceAudio
Pricing
FREEMIUM
Source
Proprietary
Hosting
Cloud
Platforms
WebAPI
Models
Multi-model
Verified
Jun 16, 2026

Hume builds voice AI tuned to emotional expression. Its Empathic Voice Interface (EVI) is a speech-to-speech system that reads vocal tone, handles interruptions and back-channeling, and can front any external LLM. Octave is its expressive text-to-speech model with voice design, cloning, and modulation.

Pros & cons

  • Emotionally expressive speech-to-speech
  • Low-latency, interruptible conversations
  • Works with external LLMs
  • Octave TTS with voice design
  • Core EVI and Octave are closed-source
  • Usage-based costs can add up
  • Emotion inference can be imperfect
  • Smaller ecosystem than big TTS vendors

Tags

Further reading

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