xAI introduces Grok Voice Agent API with multilingual, real-time voice capabilities

xAI has launched the Grok Voice Agent API, giving developers the tools to build voice agents that speak dozens of languages, interact with tools, and access real-time data. This new API draws on the same technology stack as Grok Voice, ensuring consistency across platforms.

Building on this foundation, xAI developed every key audio component internally, including models for voice activity detection, tokenization, and audio processing. This full control enables rapid development and continuous improvements to intelligence and speed.

Grok Voice Agents are designed for multilingual interaction. They speak dozens of languages with native-level precision, capturing dialects and subtle pronunciation differences. Agents can automatically adjust to the language spoken by the user, switch languages mid-conversation, or be directed to always respond in a specific language through system prompts.

Alongside language features, Grok Voice Agents perform tasks and retrieve information for users in real time. Supporting a broad range of use cases, the API also offers multiple expressive voices, letting developers customize the user experience.