Provider pricing
Hume AI AI API pricing
Hume AI specializes in emotional intelligence for voice. Their Empathic Voice Interface (EVI 3) detects 48 distinct vocal expressions in real time and responds with matching prosody, while Octave TTS generates speech with controllable emotion, character, and pacing — purpose-built for empathetic voice agents in health, coaching, and support.
Founded2021
HeadquartersNew York, NY
Tracked models2
Best for
Voice agent and conversational-AI teams that need empathy, tone, and emotional context — not just transcription.
Strengths
- Real-time prosody and emotion detection across 48 expressions
- Octave TTS with directable emotion, character, and intonation
- Sub-700ms voice-to-voice latency for natural conversation
- OpenAI-compatible chat API with built-in interruption handling
Tracked Hume AI models
| Model | Input $/M | Output $/M | Context | Tier | Best for |
|---|---|---|---|---|---|
| Octave TTS | $15.00 | $0 | 5,000 | Mid-tier | Emotionally expressive TTS (~$0.015/1K chars) |
| Hume EVI 3 | $4.32 | $0 | 0 | Flagship | Empathic voice (STT+LLM+TTS): $0.072/min ≈ $4.32 per audio hour |