Ultravox Build AI voice agents that communicate like humans.

What is Ultravox?

Ultravox offers an advanced approach to AI speech communication by functioning as a Speech Language Model (SLM). It processes spoken language directly without first converting it to text, enabling more fluid, natural, and faster conversations compared to traditional cascaded systems. This direct speech understanding allows it to capture nuances like tone and pauses, leading to more human-like interactions.

Designed for seamless integration, Ultravox provides SDKs for major languages and built-in support for platforms like Twilio, facilitating deployment in web applications, native apps, or phone-based systems. It supports multiple languages by default and can be adapted for new languages or accents. Users also have the flexibility to utilize any open-source model, including their own fine-tuned versions, and can customize aspects like voice characteristics or fine-tune the model on specific datasets. It can also be deployed on-premises or in a private cloud environment.

Features

Direct Speech Processing: Understands speech without converting to text for more natural conversations.
Multi-lingual Support: Fluent in major languages and adaptable for new ones.
BYOM (Bring Your Own Model): Flexibility to use any open-source or custom fine-tuned models.
Web or VoIP Ready: SDKs available for easy integration into web, apps, or phone systems.
Function Calling: Enables integration with external tools and APIs.
Fine-tunable: Allows customization and fine-tuning on specific datasets.
Interruptions Handling: Manages conversational interruptions naturally.
Custom Voices & Cloning: Supports unique voice creation and cloning.
RAG Support: Integrates Retrieval-Augmented Generation capabilities.