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What is Higgs Realtime?

Higgs Realtime represents a sophisticated model and API that offers production-ready, real-time speech-to-speech functionality, aimed at enabling smooth and intuitive conversations. This all-encompassing, audio-focused model is adept at handling audio, text, or a combination of both, producing high-quality replies while also functioning as a text-based language model for text-only inputs. Specifically engineered for real-time voice exchanges, it skillfully navigates dialogues, accommodates interruptions, and adapts to changing requests even during an ongoing conversation, while effectively managing intricate multi-step processes. The model is designed to embody characteristics of voice agents, including seamless turn-taking, conversational pacing, modulation of tone, introductory phrases for spoken interactions, tracking of multi-turn contexts, and the ability to respond to evolving directives. Its enhanced semantic turn detection effectively differentiates between completed interactions and brief silences, while its multilingual capabilities and ability to switch codes allow it to understand over 100 languages without the need for individual configurations. By doing so, Higgs Realtime not only improves the overall user experience but also fosters increased accessibility in a wide range of communication contexts, making it a valuable tool for diverse applications. Furthermore, its ability to maintain conversational integrity ensures that users feel more engaged and understood throughout their interactions.

What is Grok Voice Think Fast 2.0?

Grok Voice Think Fast 2.0 is xAI’s flagship voice model for creating real-time AI assistants, phone agents, and interactive voice applications. The model is designed to stream both audio and text bidirectionally over WebSocket for low-friction conversational experiences. Developers can use it to build systems that listen, respond, reason, and adapt during live voice interactions. Grok Voice Think Fast 2.0 supports configurable system instructions so teams can shape behavior, persona, policies, and task handling. It also allows developers to choose high reasoning effort or no reasoning effort depending on latency, cost, and complexity requirements. The model supports built-in voices, custom voices, playback speed controls, automatic server-side voice activity detection, silence duration settings, idle re-engagement, and session resumption after temporary disconnects. It accepts PCM, G.711 μ-law, G.711 A-law, and Opus audio through JSON frames or raw binary frames. Configurable PCM sample rates let teams support use cases ranging from telephone-quality voice calls to 48 kHz audio workflows. Grok Voice Think Fast 2.0 supports more than 20 languages with native-quality accents, automatic language detection, natural responses in the speaker’s language, and seamless code-switching. Developers can provide language hints and up to 100 key terms to improve recognition of regional speech, names, products, codes, addresses, and specialized terminology. By combining real-time audio streaming, configurable reasoning, voice controls, multilingual support, transcription tuning, and pronunciation replacement, Grok Voice Think Fast 2.0 gives developers a flexible foundation for advanced voice AI products.

Media

Media

Integrations Supported

Boson AI
Grok
Grok Voice Agent
Grok Voice Agent Builder
Vercel AI Gateway

Integrations Supported

Boson AI
Grok
Grok Voice Agent
Grok Voice Agent Builder
Vercel AI Gateway

API Availability

Has API

API Availability

Has API

Pricing Information

$0.0023 per minute
Free Version
Free Trial Offered?

Pricing Information

Pricing not provided
Free Version
Free Trial Offered?

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

Boson AI

Date Founded

2023

Company Location

United States

Company Website

staging.boson.ai/blog/higgs-realtime

Company Facts

Organization Name

SpaceXAI

Date Founded

2023

Company Location

United States

Company Website

docs.x.ai/developers/model-capabilities/audio/speech-to-speech

Categories and Features

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