What is Hume AI?
Hume AI builds voice models tuned for emotional intelligence: EVI for speech-to-speech conversations with interruptibility and back-channeling, Octave for expressive TTS, and Expression Measurement APIs that score emotion in voice, face, and text. Their research covers 50+ languages, 48+ emotions, and 600+ voice descriptors. Buyers are developers building companions, coaching apps, or healthcare and customer support voice systems where tone matters.
Voice agents and conversational AI platforms for calls, qualification, scheduling, support, and audio workflows.
See the full Voice AI guide to compare more tools, buyer criteria, and related workflows.
Use cases to evaluate
Empathic voice companions and AI coaching apps
Mental health and wellness conversational tools
Customer support agents that detect frustration in real time
Research APIs scoring emotion in user-generated video and audio
Fit to evaluate
Indie developers building voice companions and chatbots
Healthcare and wellness startups
Researchers studying emotion in audio or video
CX teams wanting tone-aware quality assurance
Business fit
Right for you if you are building a companion app, mental health tool, coach, or support agent where the AI's emotional read of the user changes the response. Skip if you just need cheap TTS, since Hume's Octave overage runs $0.05-$0.15 per 1k characters versus Murf at $0.01/min. The published tier ladder (Free, $3 Starter, $7 Creator, $70 Pro, $200 Scale, $500 Business) makes it unusually easy to start small and scale. Expression Measurement is sold separately and is genuinely differentiated.
How to evaluate Hume AI
Use this category when missed calls, slow qualification, or phone support volume affects revenue.
Confirm the exact workflow
Map Hume AI to one concrete workflow first, such as empathic voice companions and ai coaching apps. Avoid buying before the owner, trigger, output, and success metric are clear.
Check category fit
Test voice quality, latency, interruptions, and escalation behavior.
Compare practical alternatives
Shortlist Hume AI against Retell AI, Vapi, Bland AI so the decision is based on fit, effort, and workflow ownership rather than brand recognition alone.
Validate cost and rollout effort
Free $0, Starter $3/mo, Creator $7-14/mo, Pro $70/mo, Scale $200/mo, Business $500/mo, Enterprise custom. EVI overage $0.04-$0.06/min. Octave overage $0.05-$0.15 per 1k characters. Expression Measurement PAYG: $0.0828/min video+audio, $0.0639/min audio, $0.045/min video, $0.00204/image, $0.00024/word. Also confirm implementation time, support needs, and whether the medium setup matches your team.
Compare Hume AI with alternatives
Use this quick comparison before booking demos or moving data into a new system.
| Primary workflow | Empathic voice companions and AI coaching apps, Mental health and wellness conversational tools |
|---|---|
| Best-fit team | Indie developers building voice companions and chatbots, Healthcare and wellness startups |
| Implementation effort | Medium setup and maintenance profile |
| Pricing check | Free plan + paid plans |
| Closest alternatives | Retell AIVapiBland AISynthflow |
Hume AI pricing
| Model | Free plan + paid plans |
|---|---|
| Snapshot | Free $0, Starter $3/mo, Creator $7-14/mo, Pro $70/mo, Scale $200/mo, Business $500/mo, Enterprise custom. EVI overage $0.04-$0.06/min. Octave overage $0.05-$0.15 per 1k characters. Expression Measurement PAYG: $0.0828/min video+audio, $0.0639/min audio, $0.045/min video, $0.00204/image, $0.00024/word. |
| Checked |
Common questions about Hume AI
What is Hume AI?
Hume AI builds voice models tuned for emotional intelligence: EVI for speech-to-speech conversations with interruptibility and back-channeling, Octave for expressive TTS, and Expression Measurement APIs that score emotion in voice, face, and text. Their research covers 50+ languages, 48+ emotions, and 600+ voice descriptors. Buyers are developers building companions, coaching apps, or healthcare and customer support voice systems where tone matters.
What is Hume AI used for?
Common use cases: Empathic voice companions and AI coaching apps; Mental health and wellness conversational tools; Customer support agents that detect frustration in real time; Research APIs scoring emotion in user-generated video and audio.
How much does Hume AI cost?
Free $0, Starter $3/mo, Creator $7-14/mo, Pro $70/mo, Scale $200/mo, Business $500/mo, Enterprise custom. EVI overage $0.04-$0.06/min. Octave overage $0.05-$0.15 per 1k characters. Expression Measurement PAYG: $0.0828/min video+audio, $0.0639/min audio, $0.045/min video, $0.00204/image, $0.00024/word.
Who is Hume AI best for?
Hume AI fits Indie developers building voice companions and chatbots, Healthcare and wellness startups, Researchers studying emotion in audio or video, CX teams wanting tone-aware quality assurance. Right for you if you are building a companion app, mental health tool, coach, or support agent where the AI's emotional read of the user changes the response. Skip if you just need cheap TTS, since Hume's Octave overage runs $0.05-$0.15 per 1k characters versus Murf at $0.01/min. The published tier ladder (Free, $3 Starter, $7 Creator, $70 Pro, $200 Scale, $500 Business) makes it unusually easy to start small and scale. Expression Measurement is sold separately and is genuinely differentiated.
What are alternatives to Hume AI?
Common alternatives to Hume AI include Retell AI, Vapi, Bland AI, Synthflow, ElevenLabs Conversational AI, PolyAI.