Hume AI
Hume AI provides infrastructure for evaluating and improving voice AI, combining expression measurement, realistic interaction tests, and human judgment.
What Hume AI is
Hume AI provides infrastructure for evaluating and improving voice AI, combining expression measurement, realistic interaction tests, and human judgment. VoiceEQ can generate targeted evaluation suites, test systems under realistic conditions, diagnose failures, and help validate improvements. Its evaluation dimensions include reliability, emotion alignment, expressivity, naturalness, interruption handling, and speaker verification. VoiceEQ lists WebRTC, WebSocket, SIP or live phone line, and batch audio transports, with TTS, speech-to-speech, ASR, and speech-understanding modalities. Hume’s Expression APIs measure vocal and facial expression for live interactions and recording analysis. The Audio Expression API offers 600+ dimensions across 50+ languages, while the Video Expression API measures 70+ expressions across faces in a frame. Prism Pipeline can clean, segment, transcribe, enrich, and organize audio, and can be deployed in a customer VPC on GKE, EKS, or AKS. Human evaluation tools include testing by real people and ratings returned in hours. Hume lists a free plan and paid access from $3/mo. Its platforms include API, iOS, macOS, and web.
Good
- VoiceEQ evaluates multiple voice-quality dimensions.
- Expression measurement supports more than 50 languages.
- Prism Pipeline supports customer-VPC deployment.
- Offers API, iOS, macOS, and web access.
- Free plan is available.
Watch out
- Expression Measurement API access is limited release.
- Commercial use is not allowed.
- EVI privacy controls are opt-in by default.
Who it suits
It is aimed at teams building voice models and agents, including developers fine-tuning agents or evaluating production systems. It may suit teams needing voice evaluation, expression measurement, or human feedback tools.
Verdict
Hume AI centers on voice AI measurement, evaluation, and improvement, with APIs and pipelines for several stages of that work. Its limited-release API access and noncommercial-use restriction are key constraints to consider.
The facts
Each one read from Hume AI's own pages, with the date it was checked.
What it does
- API access
- The Expression Measurement API documentation says the API is in limited release and access can be requested from Hume.checked 7 Oct 2026
- Audience
- Hume says its products serve teams building voice models, fine-tuning voice agents, and evaluating production systems.checked 7 Oct 2026
- Audio pipeline
- Prism Pipeline can clean, segment, transcribe, enrich, and organize audio, and is described as deployable in a customer VPC on GKE, EKS, or AKS.checked 8 Oct 2026
- Compliance
- Hume's Voice API privacy documentation states that Hume AI is HIPAA compliant and allows users to request a BAA or DPA.checked 8 Oct 2026
- Current focus
- Hume describes its current offering as infrastructure for evaluating and improving voice AI.checked 7 Oct 2026
- Deployment
- Hume says its Prism Pipeline can be deployed in a customer VPC on GKE, EKS, or AKS.checked 7 Oct 2026
- Developer tooling
- The Expression Measurement API documentation lists Python and Node.js SDKs for its endpoints.checked 7 Oct 2026
- Evaluation dimensions
- The platform evaluates qualities including reliability, emotion alignment, expressivity, naturalness, interruption handling, and speaker verification.checked 8 Oct 2026
- Evaluation metrics
- VoiceEQ lists measures including reliability, acoustic quality, expression understanding, interruption handling, speaker verification, and synthetic-speech detection.checked 7 Oct 2026
- Expression APIs
- Hume’s Expression APIs measure vocal and facial expression to guide live interactions and analyze recordings for evaluation, training, and analysis.checked 7 Oct 2026
- Expression measurement
- The Audio Expression API provides 600+ dimensions across 50+ languages, while the Video Expression API measures 70+ expressions across faces in a frame.checked 8 Oct 2026
- Human evaluation
- The User Testing API uses real people to test endpoints across languages, personas, scripts, and edge cases; the Human Feedback API returns human ratings in hours.checked 8 Oct 2026
- Integrations
- Hume's API documentation lists integrations including Vercel AI SDK, LiveKit, Pipecat, Vapi, Twilio, and Agora.checked 8 Oct 2026
- Languages
- Hume states that its expression measurement supports more than 50 languages.checked 7 Oct 2026
- Privacy
- Hume’s privacy policy says it uses reasonable organizational, technical, and administrative measures to protect personal information.checked 7 Oct 2026
- Privacy controls
- For EVI, users can disable retention of chat histories and voice recordings and opt out of anonymized interaction data being used for model training; these settings are opt-in by default and disabling retention removes chat history and resume features.checked 8 Oct 2026
- SDKs
- The API documentation navigation lists SDK quickstarts for TypeScript, Python, .NET, and React or Next.js development.checked 8 Oct 2026
- Security and compliance
- Hume’s Octave page lists SOC 2 Type II and HIPAA compliance for the product.checked 7 Oct 2026
- Support
- Hume's API documentation directs users to its Discord community for support.checked 8 Oct 2026
- Supported connection types
- VoiceEQ lists WebRTC, WebSocket, SIP or live phone line, and batch audio as transports, and TTS, speech-to-speech, ASR, and speech understanding as modalities.checked 8 Oct 2026
- VoiceEQ
- VoiceEQ combines automated measurement and human judgment to test voice AI under realistic conditions and identify areas for improvement.checked 7 Oct 2026
- Voice evaluation
- VoiceEQ generates targeted evaluation suites, tests systems under realistic conditions, diagnoses failures, and helps validate improvements.checked 8 Oct 2026
The company
- Founded
- Hume AI's blog states that Alan Cowen founded Hume AI in 2021.checked 8 Oct 2026
- Headquarters
- Hume lists its office at 51 Madison Ave, New York, NY 10010.checked 7 Oct 2026
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