Today, we're excited to announce a step change in xAI's Voice Agent capabilities: Introducing Grok Voice 1.0 — our new flagship voice model.
\nThis new model excels at complex, ambiguous, multi-step workflows across customer support, sales, and enterprise applications. It is especially well-suited for high-stakes scenarios that demand precise data entry and high-volume tool calling to address the user's request.
\nWe built Grok Voice 1.0 through tight collaboration with partners like Starlink to combine top-tier intelligence with low response latency and organic conversational ability.
\nOur model prioritizes snappy responses and unparalleled cost effectiveness without compromising on accuracy or tool orchestration. The result is a model that lets teams confidently deploy complex, multi-turn voice experiences across almost any conceivable use case: Customer support, phone sales, appointment booking, restaurant reservations, and more.
\nThis new model takes the top spot on the τ-voice Bench leaderboard, which evaluates full-duplex voice agents under realistic conditions including noise, accents, interruptions, and turn-taking. See the benchmark details here.
\nGrok Voice 1.0
\nGrok Voice Fast 1.0
\nGemini 3.1 Flash Live
\nGPT Realtime 1.5
\nThe model has been battle-tested in the toughest real-world conditions: telephony audio, background noise, heavy accents, and frequent interruptions. It natively supports 25+ languages, making it ideal for global deployments.
\nCollecting and confirming user information is critical for many workflows. Grok Voice is able to seamlessly collect email addresses, physical street addresses, phone numbers, full names, account numbers, and other structured data—even when information is spoken quickly or with a strong accent. It gracefully handles speech disfluencies and accepts natural corrections as a human would.
\nProcessing user input
\nThe model handles the spoken corrections and extracts the intended address.
\nCalling custom tool
\nInvoking the address lookup tool with the corrected query parameter.
\nConfirming the result
\nReading back the normalized address with location for user confirmation.
\nGrok Voice performs reasoning in the background, allowing it to think through challenging queries and workflows in real-time with no impact on response latency. This enables intelligent answers while retaining the dexterity needed for natural conversation.
\nVoice models often default to confident, plausible-sounding answers, despite being completely wrong. We've built Grok Voice 1.0 to reason through edge cases before responding, catching obvious mistakes that other models get wrong.
\nPrompt
\nWhich months of the year are spelled with the letter X?
\nGrok Voice 1.0
\nNone of the months are spelled with the letter X. You can check them all, but X doesn't appear in any month name.
\nOther Models
\nOnly one month is spelled with the letter X. It's February.
\nGrok Voice enables Starlink's phone sales and customer support experience at +1 (888) GO STARLINK. This requires working across numerous languages, helping customers through customer support scenarios, and onboarding new customers via sales:
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