Hume AI
Empathetic voice interface with emotional intelligence model for expressive, human-like interactions that understand and respond to tone and sentiment.
Updated 2026-05-01
Yes, within limits. Hume AI runs a free tier with paid plans above it.
Listed pricing: Free credits + usage-based from $0.07/min.
Overview
Hume AI is an affective computing platform built around one core idea: AI should understand how you feel, not just what you say. Their flagship product, the Empathic Voice Interface (EVI), is a conversational AI that analyzes vocal prosody — pitch, rhythm, tone, pauses — in real time to detect the speaker's emotional state and respond with appropriate empathy and expressiveness.
What sets Hume apart from standard voice APIs is the depth of their emotion model. Trained on millions of human expressions across cultures, their system measures 48 distinct emotional dimensions rather than simple positive/negative sentiment. This means an EVI-powered assistant can tell the difference between a confused pause and a frustrated one, and adjust its response accordingly. The voice output is equally expressive — it doesn't just read text aloud but modulates its own tone to match the conversational context.
Hume is primarily a developer platform, not a consumer product. You integrate their APIs into your own applications — customer support, telehealth, gaming, accessibility tools. Their Expression Measurement API can also analyze emotion from facial expressions and text, making it useful for UX research and content testing. The company was founded by former Google DeepMind researcher Alan Cowen and has raised over $50M, positioning itself as the leader in the emerging emotional AI space. The technology is grounded in peer-reviewed research, which gives it more scientific credibility than most AI startups claim.
Is Hume AI free?
Yes, within limits. Hume AI runs a free tier with paid plans above it.
What the free tier covers: Free credits included on signup for testing EVI and Expression Measurement APIs.
Listed pricing: Free credits + usage-based from $0.07/min.
Pricing on this page has not been re-verified. The entry was last edited on , and no separate pricing check has been run since. Treat the figures as a record of what was published then and confirm on the official site.
What the free tier leaves out
Read straight off the plan list below. Vendors move features between tiers, so check the current split before you pay.
- Growth Usage-based from $0.07/min Pay-as-you-go EVI usage, Expression Measurement API, higher rate limits, email support
- Enterprise Custom Volume discounts, dedicated support, SLAs, custom model fine-tuning, on-premise deployment options
Hume AI pricing
| Plan | Price | What's included |
|---|---|---|
| Free | Free | Free credits to start, access to EVI and Expression Measurement APIs, community support |
| Growth | Usage-based from $0.07/min | Pay-as-you-go EVI usage, Expression Measurement API, higher rate limits, email support |
| Enterprise | Custom | Volume discounts, dedicated support, SLAs, custom model fine-tuning, on-premise deployment options |
Free credits to start, access to EVI and Expression Measurement APIs, community support
Pay-as-you-go EVI usage, Expression Measurement API, higher rate limits, email support
Volume discounts, dedicated support, SLAs, custom model fine-tuning, on-premise deployment options
One plan carries no published number: Enterprise, recorded as “Custom”. Nothing is estimated in its place. The vendor's own pricing page is the only source for those figures.
Pricing on this page has not been re-verified. The entry was last edited on , and no separate pricing check has been run since. Treat the figures as a record of what was published then and confirm on the official site.
Is Hume AI worth it?
Worth it for Developers integrating emotion-aware voice agents into apps like customer support and telehealth, plus researchers measuring genuine human reactions.
You can test that on the free tier before paying anything. The recorded trade-offs are listed below, and any one of them can settle the question on its own.
The 8.4/10 AI Score is an editorial read of published capability, price and shipping pace. Nobody here has hands-on hours with Hume AI. How we verify.
Worth it if
The strengths recorded against this entry.
- Reads 48 emotional dimensions from voice — far deeper than any competitor's sentiment analysis
- EVI voice output sounds genuinely expressive rather than flat text-to-speech
- Grounded in peer-reviewed affective computing research, not just marketing claims
- Multimodal emotion detection across voice, face, and language in a single platform
Not worth it if
Any one of these blocks your use case.
- Developer-focused API platform — no ready-made consumer product to just start chatting with
- Emotional AI is still an emerging field and accuracy varies across accents and cultural contexts
- Documentation and community are smaller than established voice platforms like ElevenLabs
- Usage-based pricing can be hard to predict for applications with variable call volumes
What sets Hume AI apart
- Measures 48 distinct emotional dimensions from voice, beyond basic sentiment analysis
- Expression Measurement API analyzes emotion across voice, facial expressions, and text
- EVI voice output modulates tone and pace to match conversational context
- Grounded in peer-reviewed affective computing research
Key features
Empathic Voice Interface (EVI)
Real-time conversational AI that listens to vocal prosody — pitch, rhythm, breathiness, pauses — to understand how the speaker feels, then generates responses with matching emotional expressiveness. Supports interruptions and turn-taking naturally.
Emotion Detection
Measures 48 distinct emotional dimensions from voice in real time using models trained on millions of cross-cultural human expressions. Goes far beyond basic sentiment analysis to capture nuances like amusement vs. relief or confusion vs. boredom.
Expression Measurement API
Batch and streaming analysis of emotion from voice, facial expressions, and text. Used for UX research, content testing, market research, and any application where understanding genuine human reactions matters.
Voice Prosody
EVI's speech output modulates tone, pace, and emphasis based on conversational context and the user's emotional state. The result sounds notably more human than typical text-to-speech, with appropriate warmth, concern, or enthusiasm.
How it compares
| Tool | Best for | Pricing | Score |
|---|---|---|---|
| Hume AI | Developers integrating emotion-aware voice agents into apps like customer support and telehealth, plus researchers measuring genuine human reactions. | Free credits + usage-based from $0.07/min | 8.4/10 |
| ChatGPT vs ChatGPT → | Users who want one subscription covering reasoning, voice, vision, image and video generation, and agentic browsing in a single app. | Free tier + Plus $20/mo + Pro $200/mo | 9.5/10 |
| Claude vs Claude → | Developers and professionals who need agentic coding, computer control, and large-document or codebase analysis in one assistant. | Free tier + Pro $20/mo + Team $30/mo/user | 9.5/10 |
| Gemini vs Gemini → | Google Workspace users who want an assistant that can read their Gmail, Drive, and Calendar while reasoning across huge documents or videos in one pass. | Free tier + Advanced $19.99/mo | 9.2/10 |
Compare head-to-head
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