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SpaceXAI

Grok Voice 2.0

Previous-generation Grok voice model, deprecated in favor of Grok Voice 3.0.

Open provider docsSee key facts

Plain-English overview

What Grok Voice 2.0 actually is

Grok Voice 2.0 was released in July 2026. The October release replaced it behind grok-voice-latest; existing integrations should migrate to grok-voice-3.0.

The sub-second label is a provider-level claim, not a guaranteed mouth-to-ear measurement. Telephony, network distance, voice activity detection, tool calls, and application logic all affect the user's experience.

Good fit for

  • Realtime voice agents with tools
  • Minute-based call-cost planning
  • Teams using SpaceXAI's model and search stack

Category comparison

The facts that matter for voice models

These are provider-published specifications, not Cody benchmark scores. Follow the linked sources for current limits and endpoint-specific exceptions.

Price basis
$0.08 / audio minuteToken-, character-, or minute-based price for the listed access route.
Interaction mode
Realtime speech-to-speech with toolsSpeech-to-speech, audio-to-audio, or streamed text-to-speech behavior.
Published latency
Sub-second provider claimProvider-published measurement with its stated exclusions; not a Cody test.
Languages
Exact supported list not published hereProvider-documented language coverage or a clear unpublished marker.
Tools & control
Realtime tool useNative function calling, reasoning, or speech-control features.
Context or input limit
Not publishedDocumented token or character limit where it is meaningful.

API and provider access

Where to get Grok Voice 2.0

SpaceXAIVoice API overviewOfficial realtime voice endpoint.SpaceXAIVoice pricingLive speech-to-speech rate.

Availability

Regions and access stage

Deprecated: choose Grok Voice 3.0 for new integrations. The grok-voice-latest alias no longer selects this version.

Account and regional availability should be verified in the SpaceXAI console.

Check live availability

Data and training

The route matters.

SpaceXAI says it does not train on API inputs or outputs without explicit permission. Default encrypted retention is 30 days; team-level zero data retention is available with feature tradeoffs.

This is a concise reading of the cited provider material, not legal advice. A third-party gateway can have different storage, routing, training, and residency terms from the model maker's direct API.

Read the provider policy

Frequently asked questions

Grok Voice 2.0 FAQ

What is Grok Voice 2.0?

Previous-generation Grok voice model, deprecated in favor of Grok Voice 3.0. Grok Voice 2.0 was released in July 2026. The October release replaced it behind grok-voice-latest; existing integrations should migrate to grok-voice-3.0.

When was Grok Voice 2.0 released?

Grok Voice 2.0 was released on July 29, 2026 according to the cited provider materials.

Where can I access Grok Voice 2.0?

Deprecated: choose Grok Voice 3.0 for new integrations. The grok-voice-latest alias no longer selects this version. The access routes listed in this guide are SpaceXAI.

How much does Grok Voice 2.0 cost?

$0.08 / audio minute. SpaceXAI lists speech-to-speech audio at $0.08/minute plus $0.004 per text input unit shown on its pricing page.

Where is Grok Voice 2.0 available?

Deprecated: choose Grok Voice 3.0 for new integrations. The grok-voice-latest alias no longer selects this version. Account and regional availability should be verified in the SpaceXAI console.

Is my Grok Voice 2.0 API data used for training?

SpaceXAI says it does not train on API inputs or outputs without explicit permission. Default encrypted retention is 30 days; team-level zero data retention is available with feature tradeoffs. The policy belongs to the provider route and account terms, so verify it again before production use.

Related comparisons

Head-to-head comparisons

View category →

  1. Grok Voice 2.0 vs Grok Voice 3.0

    Grok's realtime voice model for spoken conversations, customer support and assistants that can use tools during a call.

    Open full comparison

  2. Grok Voice 2.0 vs GPT-Live 1

    OpenAI's full-duplex voice frontend for natural conversation that delegates deeper reasoning and actions to a separate backend agent.

    Open full comparison

  3. Grok Voice 2.0 vs Gemini 3.8 Live

    Google's real-time voice model for responsive conversations with audio, text and visual context.

    Open full comparison

  4. Grok Voice 2.0 vs Gemini 3.8 Live Extended Thinking

    A separate Gemini voice model that works through complex requests in the background while keeping the conversation going.

    Open full comparison

  5. Grok Voice 2.0 vs GPT-Realtime-2.1

    OpenAI's realtime speech-to-speech reasoning model for tool-using voice agents that also need text and image context.

    Open full comparison

  6. Grok Voice 2.0 vs Gemini 3.1 Flash Live Preview

    Google's preview audio-to-audio model for low-latency dialogue with multimodal awareness, thinking, search grounding, and function calling.

    Open full comparison

  7. Grok Voice 2.0 vs Eleven v3 Conversational

    ElevenLabs' expressive realtime text-to-speech model for natural dialogue, emotional delivery, audio tags, and more than 70 languages.

    Open full comparison

  8. Grok Voice 2.0 vs Inworld Realtime TTS-2

    Inworld's newest expressive realtime text-to-speech model, designed to remember conversational delivery and speak in more than 100 languages.

    Open full comparison