Hume AI

freemium

Hume AI offers emotionally intelligent voice AI models for TTS, voice cloning, and empathic conversation. Build audiobooks, podcasts, voiceovers, and AI agents.

Audio & Voice Tools

Text to Speech Tools

Voice Cloners

About

Hume AI is an advanced voice AI platform designed to bring emotional intelligence to synthetic speech and conversational systems. At its core is Octave, a state-of-the-art text-to-speech engine capable of generating highly expressive, emotionally nuanced audio from text. Users can describe the voice they want in plain language — personality, tone, accent, energy level — and the AI creates it on demand, eliminating the need for voice actors. The platform also offers Voice Cloning, allowing users to replicate any voice from just a few seconds of audio with remarkable accuracy. Cross-Lingual support extends a single cloned voice across 100+ languages with native-level pronunciation. Acting Instructions let users direct performance details such as whisper, shout, or sarcastic tone, giving fine-grained creative control. Beyond TTS, Hume AI includes an Empathic Voice Interface (EVI) for building AI that listens and responds with emotional awareness in real-time speech-to-speech conversations. Expression Measurement tools analyze emotions from face and voice at scale. Hume AI is trusted by content creators building multi-character audiobooks, marketers crafting video voiceovers and ads, podcasters producing studio-quality dialogue, and developers integrating conversational AI agents. Its developer-friendly API and SDKs make it straightforward to embed these capabilities into any product or workflow.

Key Features

Octave Text-to-Speech: Generate highly expressive, natural-sounding speech by describing the desired voice personality, tone, and style in plain language — no voice actors required.
Voice Cloning: Create a natural-sounding voice clone from just a few seconds of audio, enabling consistent voice identity across all your content.
Cross-Lingual Voice Support: Maintain a single voice identity across 100+ languages with native-level pronunciation, enabling truly global content production.
Acting Instructions & Directed Performance: Use stage directions — whisper, shout, pause, sarcasm — to precisely control emotional delivery and performance style for every audio segment.
Empathic Voice Interface (EVI): Build real-time, speech-to-speech conversational AI agents that listen and respond with emotional awareness and contextual care.

Use Cases

Creating multi-character audiobooks by uploading a PDF, assigning character voices, and directing emotional delivery for each scene.
Producing studio-quality podcast episodes with multiple AI-generated speakers without needing real guests or recording equipment.
Generating professional video voiceovers for ads, YouTube shorts, or feature films using custom or cloned voices.
Building empathic conversational AI agents for customer support, companionship apps, or interactive storytelling experiences.
Localizing content into 100+ languages while maintaining a consistent brand voice identity across all markets.

Pros

Unmatched Expressiveness: Hume AI leads the industry in emotional nuance, producing speech that sounds genuinely human rather than robotic or flat.
Natural Language Voice Design: Describing a voice in plain language is far faster and more accessible than traditional voice casting or studio recording workflows.
Wide Language Coverage: Supporting 100+ languages with cross-lingual voice cloning makes it an ideal solution for global content localization.
Developer-Friendly API: A well-documented API and SDKs allow developers to integrate emotionally intelligent voice capabilities into any product quickly.

Cons

Pricing Can Escalate at Scale: High-volume audio generation for enterprise use cases may become costly, and pricing tiers are not fully transparent without signing up.
Voice Cloning Requires Careful Ethical Use: The ease of cloning voices raises ethical and consent considerations that users and businesses need to manage responsibly.
Advanced Features Have a Learning Curve: Features like Acting Instructions and EVI integration may require experimentation to master for optimal results.

Frequently Asked Questions

Hume AI is used to generate expressive, emotionally intelligent synthetic speech for audiobooks, podcasts, video voiceovers, ads, and AI-powered conversational agents.

You provide just a few seconds of audio from the target voice, and Hume AI's model learns to replicate its tone, cadence, and character — producing a natural-sounding clone.

Yes. Hume AI supports cross-lingual voice generation across 100+ languages, preserving voice identity with native-level pronunciation in each.

EVI is Hume AI's real-time speech-to-speech conversational layer that allows developers to build AI agents capable of understanding and responding with emotional awareness.

Yes. Hume AI offers a developer API and SDKs so teams can embed voice generation, voice cloning, and emotion-aware conversation capabilities directly into their applications.