xAI releases Grok Voice 3.0 for voice agents at the same $0.08-a-minute price as before
xAI says the speech-to-speech model answers in under a second and tops an Artificial Analysis ranking. Its own figures show it behind OpenAI’s GPT-Live-1 on one customer-support test.
Illustration · not a photoHow this story was checked
- ResearchedWith AI assistance · 2 sources
- AI source checkEach sentence matched to its source
- Editor approvalMayank Sahu · 15 Oct, 12:16
- Published15 Oct, 12:16
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- 2 sources, 1 official · 2 with an archived copy · see sources
- Every fact has a label and a source number · fact ledger
- What we searched, read and could not verify · research note
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How this was made: researched, drafted and source-checked by AI (Claude, made by Anthropic), then published under the editor’s standing approval. A person did not read it line by line before it went live. AI policy
In short
xAI released Grok Voice 3.0, a speech-to-speech model for voice agents, on 14 October 2026. It is available in xAI’s Voice Agent API at $0.08 a minute, the same price as Grok Voice 2.0. Agents using grok-voice-latest were switched to it automatically.
What xAI released
xAI published Grok Voice 3.0 on 14 October 2026 and called it “the world’s most intelligent speech-to-speech model”.1 It is available in the Voice Agent API “at the same price as its predecessor”, $0.08 per minute, or $4.80 an hour.1 Agents set to grok-voice-latest were moved to the new model automatically.1
xAI says the model also powers voice mode in Grok Bot and runs in Tesla vehicles.1
Speed and scores
xAI says Grok Voice 3.0 replies in under one second.1 AI Weekly reports a time to first audio of 0.81 seconds, down from 1.34 seconds.2
xAI’s launch post lists these results, comparing it with OpenAI’s GPT-Live-1 and Google’s Gemini 3.8 Live:1
- Artificial Analysis Speech-to-Speech Index: 86.9, against 83.2 for GPT-Live-1 and 82.6 for Gemini 3.8 Live.
- Big Bench Audio: 98.5%, against 90.1% and 97.7%.
- τ-Voice, which simulates support calls with accents, noise and interruptions: 71.6%, below GPT-Live-1 at 74.5% and above Gemini 3.8 Live at 68.6%.
The table and its comparisons are xAI’s; we did not see Artificial Analysis’s own page.
How it is used
xAI says Starlink call centres handle about 20,000 calls a day with the model and resolve roughly 70% without a person.12 These are xAI’s figures and have not been checked independently.2
What is not known
xAI does not list supported languages or voices on the launch page.1
Fact ledger
How labels workQuestions readers ask
How much does Grok Voice 3.0 cost?
$0.08 per minute in xAI’s Voice Agent API, the same as Grok Voice 2.0.
Is it better than OpenAI’s voice model?
xAI’s own table shows it ahead on some tests and behind GPT-Live-1 on τ-Voice. These are xAI’s comparisons.
Do I need to change my code?
xAI says agents using grok-voice-latest were switched automatically.
Sources
- 1xAI: Grok Voice 3.0
OFFICIAL - 2AI Weekly: xAI Grok Voice 3.0 ships at $0.08/min
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