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About

The Grok Voice Agent API is xAI’s new developer platform for building fast, intelligent, and multilingual voice agents. It is powered by the same in-house voice technology used by Grok Voice in mobile apps and Tesla vehicles. The API enables voice agents to speak dozens of languages, call tools, and search real-time data. Grok Voice Agents are engineered for low latency, delivering audio responses in under one second. The platform ranks first on the Big Bench Audio benchmark for voice reasoning performance. Developers benefit from a simple, flat pricing model based on connection time. The Grok Voice Agent API brings production-proven voice intelligence to custom applications.

About

Grok Voice Think Fast 2.0 is xAI’s flagship voice model for building real-time assistants, phone agents, and interactive voice systems that stream audio and text bidirectionally over WebSocket. Developers can configure system instructions, high or no reasoning effort, built-in or custom voices, automatic server-side voice activity detection, silence duration, idle re-engagement, playback speed, and session resumption after temporary disconnects. It accepts PCM, G.711 μ-law, G.711 A-law, and Opus audio through JSON or raw binary frames, with configurable PCM sample rates from telephone quality to 48 kHz. It supports more than 20 languages with native-quality accents, automatic language detection, natural responses in the speaker’s language, and seamless code-switching. Language hints and up to 100 key terms improve transcription of regional speech, names, products, codes, addresses, and specialized terminology, while pronunciation replacements correct spoken output.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

The Grok Voice Agent API is ideal for developers, startups, and enterprises building multilingual, real-time voice assistants for customer support, automotive, healthcare, finance, and conversational AI applications

Audience

Developers seeking to build low-latency voice agents that hold real-time speech conversations and use tools during interactions

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

$0.05 per minute
$0.05 per minute of connection time
Free Version
Free Trial

Pricing

No information available.
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

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Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

SpaceXAI
Founded: 2023
United States
x.ai

Company Information

SpaceXAI
Founded: 2023
United States
docs.x.ai/developers/model-capabilities/audio/speech-to-speech

Alternatives

Alternatives

Voxtral TTS

Voxtral TTS

Mistral AI

Categories

Categories

Integrations

Grok
Grok Voice Agent
Grok Voice Agent Builder
Grok Voice Think Fast 1.0
Grok Voice Think Fast 2.0
Vercel AI Gateway

Integrations

Grok
Grok Voice Agent
Grok Voice Agent Builder
Grok Voice Think Fast 1.0
Grok Voice Think Fast 2.0
Vercel AI Gateway
Claim Grok Voice Agent and update features and information
Claim Grok Voice Agent and update features and information
Claim Grok Voice Think Fast 2.0 and update features and information
Claim Grok Voice Think Fast 2.0 and update features and information