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Realtime engine · grok-voice

The grok-voice engine on Wixzel Voice: xAI Grok Voice

xAI's Grok Voice 3.0 as one realtime model: it hears, reasons and speaks, takes phone audio in and out as it is, and calls your tools natively. Hindi and Bengali are among its listed languages, and it has 26 built-in voices.

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$0.1240per connected minute, including the $0.012 orchestration fee
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What does each model in the grok-voice engine cost on Wixzel Voice?

A realtime engine hands the whole turn to one model, so the price is mostly that model’s units. The pipeline label is xAI Grok Voice.

StageModelUnit pricePer minute
Realtime modelxai/grok-voice-3.0$0.0056 per request$0.0000
Realtime modelxai/grok-voice-3.0$0.0019 per second$0.1120
Orchestrationwixzel/orchestration$0.0120 per minute$0.0120

Rounded up, never down. Where two models are listed for one stage the engine picks by language; the engine price above assumes the dearer path. All prices on the model price list.

Frequently asked questions

What is the grok-voice voice engine?

grok-voice is a realtime voice engine on Wixzel Voice. xAI's Grok Voice 3.0 as one realtime model: it hears, reasons and speaks, takes phone audio in and out as it is, and calls your tools natively. Hindi and Bengali are among its listed languages, and it has 26 built-in voices.

How much does the grok-voice engine cost per minute?

$0.1240 per connected minute at typical speech rates, including the flat $0.012 per minute orchestration fee. The figure is generated from the price book the meter bills against and is rounded up, never down. Telephony runs over your own SIP trunk and is not included or marked up.

Which models does the grok-voice engine use?

grok-voice hands the whole turn to one realtime model: xai/grok-voice-3.0. There is no separate speech-to-text or text-to-speech stage to configure.

Do I need my own xai account to use grok-voice?

No. The provider accounts belong to Wixzel Voice. One wv_live_… API key and a prepaid balance cover the grok-voice engine and every other engine; there are no provider keys to bring.

How do I use the grok-voice engine in a call?

Set the agent's voice to {"realtime": {"model": "xai/grok-voice-3.0"}} when you create it with POST /v1/agents, then place a call with POST /v1/calls. GET /v1/engines lists what is available right now; an engine whose provider is degraded disappears from that list before calls start failing.

Is the grok-voice price per minute a flat rate?

No. $0.1240 is what a typical minute adds up to. The meter charges per second of speech, per token and per character for the models that actually ran, plus the flat orchestration fee, and every micro-dollar is itemised in GET /v1/usage/events. A quieter or shorter turn costs less; a long monologue costs more.

Which other voice engines does Wixzel Voice run?

classic: $0.0865 per minute

Deepgram + GPT-6 Luna + ElevenLabs

sarvam: $0.0617 per minute

Sarvam, Indian languages end to end

gemini-live: $0.0491 per minute

Gemini Live, native audio

deepgram-agent: $0.1851 per minute

Deepgram Voice Agent

openai-live: $0.0827 per minute

OpenAI GPT-Live + GPT-6 Luna

openai-realtime: $0.0850 per minute

OpenAI Realtime, gpt-realtime-2.1-mini

Compose your own

Name a model for each stage and see the minute it adds up to.

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