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About Hume AI
What is Hume AI?
Hume AI is a voice AI platform that provides tools to build, measure, and evaluate emotionally intelligent conversational agents. It combines decades of research in multimodal emotional intelligence with APIs for expression measurement, human feedback, and simulation. The platform is designed to help voice AI teams create more natural, expressive, and trustworthy voice interactions.
Who is it for?
Hume AI is ideal for voice AI developers, product teams, and researchers who need to build or evaluate conversational AI systems. It is especially relevant for teams working on text-to-speech, speech-to-speech, and emotion-aware voice assistants. It is not for basic chatbot builders or those who only need simple voice transcription.
Real use cases
Voice AI teams use Hume AI to collect custom training data, simulate and test conversational scenarios, measure real-time emotional expression, and rate responses with human feedback. For example, a customer support bot can be tuned to detect frustration and respond with empathy, while a voice assistant can be evaluated for naturalness and emotional alignment.
Key features
- Expression Measurement API - Measure real-time emotion across 48+ categories and 50+ languages.
- Human Feedback API - Get pre-screened human raters to score and provide feedback on responses.
- Kairos Platform - Auto-generate and run evaluation suites with agent-to-agent and human-to-agent conversations.
- Data Solutions - Collect custom voice data tailored to your use cases and evaluation needs.
- Voice AI Leaderboards - Benchmark models on recognition, understanding, expression, and conversation.
- Multiple TTS/STS Models - Access Octave 1, Octave 2, EVI 3, and EVI 4 mini for various voice generation needs.
- Voice Cloning - Create and use unlimited custom voices on all paid plans.
SaaSpartout Score
7.0
/10
Editorial score from our review methodology — not user ratings.
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Hume AI Pricing
Hume AI pricing: from $0/mo.
For comparison: the median starting price in AI Voice is $10/month, measured across 54 tools we track. See the full SaaS Pricing Index →
Free — $0/month
Includes 10,000 characters (~10 minutes) of text-to-speech, 5 minutes of EVI usage, 1 concurrent connection, unlimited voice cloning (create and use), Discord support.
Starter — $3/month (first month 50% off)
Includes 30,000 characters (~30 minutes) of TTS, 40 minutes of EVI usage, 15 RPM, unlimited voice cloning, Discord support.
Creator — $7/month ($14/month regular)
Includes 140,000 characters (~140 minutes) of TTS, 200 minutes of EVI usage, 75 RPM, unlimited voice cloning, Discord support.
Pro — $70/month
Includes 1,000,000 characters (~1,000 minutes) of TTS, 1,200 minutes of EVI usage, 150 RPM, unlimited voice cloning, Discord support.
Scale — $200/month
Includes 3,300,000 characters (~3,300 minutes) of TTS, 5,000 minutes of EVI usage, 150 RPM, unlimited voice cloning, Discord support.
Business — $500/month
Includes 10,000,000 characters (~10,000 minutes) of TTS, 12,500 minutes of EVI usage, 225 RPM, unlimited voice cloning, Slack support.
Enterprise — Custom
Custom pricing with as much TTS/EVI usage as needed, API access to voice cloning, SOC 2 Type II, GDPR, and HIPAA compliance. Contact sales.
All plans offer a free sign-up; paid plans include a 50% discount on the first month for Starter.
Frequently asked questions
Is Hume AI free?
Yes, Hume AI offers a free plan with 10,000 characters of text-to-speech and 5 minutes of EVI usage per month.
How much does Hume AI cost?
Paid plans start at $3/month for Starter, with higher tiers (Creator, Pro, Scale, Business) up to $500/month. Enterprise custom pricing is available.
What is Hume AI used for?
Hume AI is used to build and evaluate emotionally intelligent voice AI, including text-to-speech, speech-to-speech, and conversational agents with advanced emotional expression measurement.
Who is Hume AI best for?
It is best for voice AI developers and product teams who need to fine-tune and test conversational AI for naturalness, emotional expression, and human-like interactions.
What are the top alternatives to Hume AI?
Alternatives include other voice AI platforms like ElevenLabs for TTS, Play.ht, and custom emotion AI solutions, but Hume AI stands out for its research-backed emotional intelligence and human feedback evaluation.
What is the key limitation of Hume AI?
Hume AI focuses on voice and emotion; it is not a full chatbot framework, so it requires integration with external LLMs for conversational logic.
