Grok Voice 3.0SpaceXSI
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Related Products
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About
Grok Voice 3.0 is a speech-to-speech model offered through the Grok Voice Agent API for developers building real-time voice applications. It accepts audio and text and returns spoken audio or text through a WebSocket session, supporting conversational turn-taking, interruptions, and function calling. Developers can connect the model to custom functions and server-side tools, including web search, X search, collections, and remote MCP servers. The API is intended for interactive voice agents such as customer-support and service-call experiences, and is also used for voice interactions in Tesla vehicles and Grok Bot. Billing is usage-based, with audio charged per minute and text input events billed separately. The API documentation includes setup instructions and examples for Python and JavaScript clients.
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About
KugelAudio is the most realistic speech AI platform, combining text-to-speech, speech-to-text, and voice-to-voice in one stack. With 39-50ms inference latency (lowest on the market), 30-second voice cloning, on-premises deployment, and industry-leading accuracy on email addresses, IBANs, and phone numbers, it's built for production voice applications where quality and compliance matter. It's a strong fit for voice bots and conversational agents that need to handle structured data without misreads, real-time applications requiring sub-50ms latency, and regulated industries like banking, insurance, healthcare, and the public sector that need on-premises or EU-sovereign deployment. Beyond enterprise voice automation, KugelAudio also powers branded voice experiences through natural cloning from 30 seconds of audio, multilingual products across over 30 languages German, English, French, and Italian, and media or content production needing the most realistic synthetic voices available.
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Audience
Developers building real-time voice applications, phone agents, interactive voice systems, and customer-support experiences.
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Audience
KugelAudio is for teams shipping production voice applications where quality, latency, and compliance are non-negotiable, from conversational AI and contact-center platforms to banks, insurers, healthcare, and public-sector deployments with strict GDPR or on-premises requirements. It's equally suited to media, audiobook, e-learning, gaming, and accessibility teams that need realistic multilingual speech, fast voice cloning, and the freedom to host on managed API, EU-sovereign cloud, or fully air-gapped infrastructure.
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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Support
Phone Support
Supported
24/7 Live Support
Supported
Online
Supported
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API
Offers API
Supported
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API
Offers API
Not Supported
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Screenshots and Videos |
Screenshots and VideosNo images available
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Pricing
$0.08/min
Audio is $0.08 per minute. Text-only input events are $0.004 each. Server-VAD sessions are billed for the full session duration; push-to-talk sessions are billed for audio sent and received.
Free Version
Not Supported
Free Trial
Supported
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Pricing
$1
Free Version
Not Supported
Free Trial
Supported
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Reviews/
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Reviews/
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Supported
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Company InformationSpaceXSI
Founded: 2023
United States
x.ai/api/voice
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Company InformationKugelAudio
Founded: 2025
Germany
kugelaudio.com
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Categories |
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Integrations
Grok
Supported
Grok Bot
Supported
Grok Voice Agent
Supported
Grok Voice Agent Builder
Supported
Model Context Protocol (MCP)
Supported
Twilio
Supported
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Integrations
Grok
Not Supported
Grok Bot
Not Supported
Grok Voice Agent
Not Supported
Grok Voice Agent Builder
Not Supported
Model Context Protocol (MCP)
Not Supported
Twilio
Not Supported
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