Grok Voice 3.0

Grok Voice 3.0

SpaceXSI
Octave TTS

Octave TTS

Hume AI
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+

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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.

About

Hume AI has introduced Octave (Omni-capable Text and Voice Engine), a groundbreaking text-to-speech system that leverages large language model technology to understand and interpret the context of words, enabling it to generate speech with appropriate emotions, rhythm, and cadence, unlike traditional TTS models that merely read text, Octave acts akin to a human actor, delivering lines with nuanced expression based on the content. Users can create diverse AI voices by providing descriptive prompts, such as "a sarcastic medieval peasant," allowing for tailored voice generation that aligns with specific character traits or scenarios. Additionally, Octave offers the flexibility to modify the emotional delivery and speaking style through natural language instructions, enabling commands like "sound more enthusiastic" or "whisper fearfully" to fine-tune the output.

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

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

Audience

Developers building real-time voice applications, phone agents, interactive voice systems, and customer-support experiences.

Audience

Content creators wanting a tool to produce expressive and contextually accurate voiceovers, enhancing listener engagement through lifelike storytelling

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

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

Pricing

$3 per month
Free Version Supported
Free Trial Not Supported

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

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 Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Supported

Company Information

SpaceXSI
Founded: 2023
United States
x.ai/api/voice

Company Information

Hume AI
Founded: 2021
United States
www.hume.ai/blog/octave-the-first-text-to-speech-model-that-understands-what-its-saying

Alternatives

Alternatives

GPT-Live-1

GPT-Live-1

OpenAI
GPT-Live

GPT-Live

OpenAI
Orpheus TTS

Orpheus TTS

Canopy Labs
Voxtral TTS

Voxtral TTS

Mistral AI

Categories

AI Voice Models Supported

Categories

Integrations

Grok Supported
Grok Bot Supported
Grok Voice Agent Supported
Grok Voice Agent Builder Supported
Hume AI Not Supported
Model Context Protocol (MCP) Supported
Twilio Supported

Integrations

Grok Not Supported
Grok Bot Not Supported
Grok Voice Agent Not Supported
Grok Voice Agent Builder Not Supported
Hume AI Supported
Model Context Protocol (MCP) Not Supported
Twilio Not Supported
Claim Grok Voice 3.0 and update features and information
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