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Hume AI

Free · From $3/mo

Hume AI creates highly realistic and emotionally expressive AI voices that understand context. It generates human-like speech with natural tones for content like audiobooks and podcasts, and can give AI characters or customer service agents a genuinely empathetic voice.

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About Hume AI

Who It's For

Hume AI helps creators make realistic audio for podcasts, audiobooks, and videos. Developers can add expressive AI voices to their apps. Businesses use it for AI characters, content tools, or to give customer service agents a natural voice.

What You Get

You get AI voices that sound truly human. They understand emotions and context, creating realistic speech. This includes text-to-speech for expressive audio and speech-to-speech for empathetic, real-time talks. It supports many languages and lets you customize voices.

How It Works

Hume AI uses smart models that understand words and their emotional meaning. You can type text to generate speech with chosen emotions. Or, the AI can understand and respond emotionally in a conversation. Developers add these features using simple APIs and SDKs.

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Features & Capabilities

🗣️ Core Voice AI Capabilities

Expressive Text-to-Speech (Octave)

Generates human-like voice from text by understanding context to predict emotions and cadence.

Empathic Speech-to-Speech (EVI)

Processes and generates speech with human-like understanding and emotional nuance.

Multi-language Support

Provides voice AI capabilities in over 11 languages for global applications.

Low-Latency Performance

Delivers fast, real-time voice responses crucial for conversational AI applications.

✍️ Creator Studio Tools

AI Audiobooks

Creates high-quality, multi-character audiobooks from PDFs with directed delivery and publishing options.

Video Voiceovers

Generates expressive voiceovers for videos, ads, or feature-length films, including voice cloning.

Multi-speaker Podcasts

Produces studio-quality, multi-speaker podcast dialogues by selecting and generating voices.

Voice Design Studio

Offers tools to design and customize voices, instruct emotions, and create new voice profiles.

🚀 Developer & Enterprise Solutions

Developer APIs & SDKs

Provides comprehensive tools for integrating realistic, high-quality audio models into various applications and platforms.

AI Character Integration

Powers game characters or AI companions with expressive text-to-speech or speech-to-speech APIs for interactive experiences.

Enterprise Content Creation

Enables integration of realistic AI voices into media creation platforms, offering users access to hundreds of voices.

AI Phone Call Agents

Equips AI customer support or sales agents with the most realistic, low-latency voices for effective phone interactions.

Use Cases

Generating Emotionally Expressive Media Content

Content creators and media companies face challenges in producing high-quality, engaging audio for various formats like audiobooks, podcasts, and video voiceovers. Hume AI's expressive Text-to-Speech and voice cloning technology, powered by emotional intelligence, enables them to effortlessly create realistic, multi-character, and multi-language audio, significantly reducing production time and costs.

Media & EntertainmentFor: Content Creators and Media Production Teams

Building Empathetic AI Companions and Virtual Characters

Developers creating AI companions, virtual assistants, or gaming characters often find it difficult to achieve genuinely human-like and emotionally engaging interactions. Hume AI's Empathic Voice Interface (EVI) empowers these AI entities to not only understand user emotions in real-time but also respond with appropriate emotional expression, creating more realistic and relatable digital interactions across various applications.

Technology & GamingFor: AI Developers and Product Teams

Deploying Emotionally Intelligent Customer Service AI

Traditional AI customer support agents frequently sound robotic and struggle to recognize or respond empathetically to customer emotions, leading to frustration and inefficient service. Hume AI’s Empathic Voice Interface (EVI) allows AI customer service and sales agents to detect real-time emotional cues from callers and respond with human-like empathy and appropriate tone, drastically improving customer satisfaction and call resolution rates.

Customer Experience & Call CentersFor: Customer Service & Sales Teams

Gaining Deeper User & Customer Experience Insights

UX/CX researchers and product teams often struggle to quantitatively measure genuine emotional responses during user interviews, focus groups, or product testing sessions. Hume AI's Expression Measurement and Emotion Analysis capabilities enable the real-time and retrospective analysis of vocal, facial, and verbal cues, providing invaluable data-driven insights into user sentiment, pain points, and overall experience.

Market & User ResearchFor: UX/CX Researchers & Product Managers

Frequently asked questions

Hume AI is a research lab and technology company focused on developing empathic artificial intelligence. Its core mission is to ensure AI serves human goals and emotional well-being. Hume AI specializes in understanding and generating emotionally expressive speech, using advanced models to analyze and respond to human emotions in real time.

Hume AI offers several key capabilities including Emotion Analysis, which analyzes emotional expression in audio (voice), video (facial expressions), and text; an Empathic Voice Interface (EVI) that enables real-time, emotionally intelligent voice conversations where the AI can detect emotional cues in a user’s voice and respond with appropriate tone and empathy; Text-to-Speech (TTS) for generating expressive, human-like speech with nuanced prosody and emotional tone; and Expression Measurement, which provides detailed analysis of vocal, facial, and verbal cues for research, customer service, wellness, and more.

The main APIs offered by Hume AI include the Empathic Voice Interface (EVI) for real-time, emotionally responsive voice interactions, Text-to-Speech (TTS) for expressive speech synthesis, and Expression Measurement for analyzing emotional expression in media and text.

Yes, Hume AI supports real-time analysis of audio and video streams, allowing for immediate detection and response to emotional cues.

Hume AI can analyze audio (voice recordings), video (facial expressions), and text (written content).

EVI uses a multimodal language model that considers both expression measures and language. It generates responses that are not only contextually appropriate but also emotionally expressive, adjusting tone, prosody, and speaking rate based on the user’s input and emotional state.

Yes, Hume AI supports multiple languages for both voice generation and emotion analysis.

Yes, Hume AI allows integration with other large language models (LLMs) such as Anthropic, OpenAI, and Google. Developers can use their own API keys for these providers.

Use cases for Hume AI include Customer Service, where it can detect caller frustration or distress for triage and escalation; Health & Wellness, for monitoring patient tone and emotion during therapy or check-ins; Digital Companions, to build emotionally aware companions for seniors, kids, or mental wellness support; UX/CX Research, to analyze user interviews and testing sessions for sentiment trends; and Media Creation, to integrate realistic AI voices into media platforms.

To get started with Hume AI, you need to create a Hume AI account, obtain your API keys, use the provided APIs, SDKs, and templates to integrate Hume AI into your applications, and finally test and configure your setup using the no-code interface or API documentation.

While Hume AI is primarily a toolkit for developers, it also offers a no-code interface for testing and configuring certain features, making it accessible to non-technical users for basic tasks.

Hume AI employs multiple layers of data safety, including local processing where possible and robust security measures to protect user data.

More resources and support can be found through the documentation at dev.hume.ai, support at dev.hume.ai/support, or by joining discussions on Discord and other community forums.

Yes, Hume AI offers Custom Models that allow you to create and apply context-specific labels for more relevant and accurate insights.

Hume AI can be integrated with various platforms such as Zapier and Microsoft Connectors, making it easy to connect with other tools and workflows.

Tags

voice synthesismultilingual voice synthesisaudiobook narrationpodcast voiceoverdigital voice acting

Specifications

Deployment
Browser
API
Target Audience
Individual
Startup
Business
Enterprise
Complexity
Developer

Pricing

Free

Per monthly

Free
  • Text-to-speech Octave 1 Octave 2
  • Monthly included characters: 10,000 (~10 minutes)
  • RPM (requests per minute): 15
  • Speech-to-speech EVI 3 EVI 4 mini
  • Monthly EVI usage included: 5 minutes
  • Concurrent connections: 1
  • Voice cloning: Create only
  • Support: Discord

Starter

Per monthly

$3
  • Includes all features from the Free plan
  • Monthly included characters: 30,000 (~30 minutes)
  • Projects: 20
  • Monthly EVI usage included: 40 minutes ($0.07/minute)
  • Concurrent connections: 5

Creator

Per monthly

$14
  • Includes all features from the Starter plan
  • Monthly included characters: 140,000 (~140 minutes)
  • Additional characters cost (Usage-based): $0.15/1,000
  • RPM (requests per minute): 75
  • Projects: 1,000
  • Monthly EVI usage included: 200 minutes ($0.07/minute)
  • Voice cloning: Unlimited (create and use)

Pro

Per monthly

$70
  • Includes all features from the Creator plan
  • Monthly included characters: 1,000,000 (~1,000 minutes)
  • Additional characters cost (Usage-based): $0.12/1,000
  • Projects: 3,000
  • Monthly EVI usage included: 1,200 minutes ($0.06/minute)
  • Additional EVI 3 cost (Usage-based): $0.06/minute
  • Concurrent connections: 10

Scale

Per monthly

$200
  • Includes all features from the Pro plan
  • Monthly included characters: 3,300,000 (~3,300 minutes)
  • Additional characters cost (Usage-based): $0.10/1,000
  • RPM (requests per minute): 150
  • Projects: 10,000
  • Monthly EVI usage included: 5,000 minutes ($0.05/minute)
  • Additional EVI 3 cost (Usage-based): $0.05/minute
  • Concurrent connections: 20
  • Team seats: 3

Business

Per monthly

$500
  • Includes all features from the Scale plan
  • Monthly included characters: 10,000,000 (~10,000 minutes)
  • Additional characters cost (Usage-based): $0.05/1,000
  • RPM (requests per minute): 225
  • Projects: 20,000
  • Monthly EVI usage included: 12,500 minutes ($0.04/minute)
  • Additional EVI 3 cost (Usage-based): $0.04/minute
  • Concurrent connections: 30
  • Team seats: 5

Enterprise

Per monthly

Contact sales
  • Includes all features from the Business plan
  • Monthly included characters: As much as you need
  • Additional characters cost (Usage-based): Custom
  • RPM (requests per minute): Custom
  • Projects: As much as you need
  • Voice conversion
  • Commercial license
  • Monthly EVI usage included: As much as you need
  • Additional EVI 3 cost (Usage-based): Custom
  • External LLMs
  • Concurrent connections: As much as you need
  • Voice cloning: Unlimited (create, use and access via API)
  • Team seats: Unlimited
  • Support: Slack
  • Compliance: SOC 2 Type II, GDPR, HIPAA

✓ Free plan • ✓ Plans from $3 / monthly • ✓ Enterprise options

Integrations

Claude Sonnet
Grok
GPT
Niantic Spatial
Inception Point
Vonova

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