Grok Voice 3.0 Speech Model
Meet Grok Voice 3.0 Speech Model — human-like replies in a heartbeat, support calls closed without a person, and bills below rival frontier models.
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Why Teams Pick the Grok Voice 3.0 Speech Model
Built for live voice agents: conversations resolved end to end, replies inside a second, and the kind of scale Tesla and SpaceX already lean on.
- Ranked the Smartest Speech-to-Speech EngineIt finishes far more support chats unassisted than earlier models, and its reply speed feels like a person on the other end of the line.
- Frontier Quality, Leaner SpendServing it costs less than rival frontier models, and API rates hold at the same $0.08 per minute as the Grok Voice 2.0 release.
- Millions of Calls Every DayTesla cars on the road and SpaceX's Starlink contact hubs push millions of live conversations through it daily.
Building Voice Agents with Grok Voice 3.0
Four practical steps that carry you from API access to a live Grok Voice 3.0 agent.
Standout Grok Voice 3.0 Speech Model Features
Benchmark-topping accuracy, smooth turn-taking, and a lighter bill per task for agents running in production.
Top Spot on the Speech-to-Speech Index
Artificial Analysis ranks it first at 86.9, a blend of speech reasoning, τ-Voice, blind head-to-head preference, and task success.
97% on Full Duplex Bench
Full Duplex Bench measures turn-taking, pause handling, and recovery from being interrupted — it scores 97%.
71.6% on τ-Voice, 40% Faster Replies
τ-Voice throws accented speech, noisy rooms, and interruptions at agents; it hits 71.6%, level with GPT-Live-1 (Astra) but answering 40% quicker.
Cheaper to Finish a Task
Task-cost figures from Artificial Analysis's Big Bench Audio run place it below both GPT-Live-1 (Astra, Medium) and GPT-Realtime-2.1.
Best EVA-Bench Enterprise Accuracy
On ServiceNow's EVA-Bench for enterprise voice agents it leads at 74% accuracy and posts the strongest combined accuracy-plus-experience score.
Contact Centers Running on Autopilot
Starlink hubs take 20,000 inbound calls a day across several languages; roughly seven in ten close with no human, and a quarter of sales calls convert before hang-up.
Grok Voice 3.0 Speech Model: Questions Answered
Quick answers about Grok Voice 3.0 Speech Model pricing, response speed, benchmark scores, and real production deployments.
What exactly is Grok Voice 3.0?
A speech-to-speech model pitched as the smartest in its class, designed to finish support conversations that used to need a human, replying in under a second.
How quickly does it respond?
Replies land in under one second, and τ-Voice testing shows 40% lower latency than GPT-Live-1 (Astra).
How does it score on independent benchmarks?
First place on the Speech-to-Speech Index at 86.9, plus 97% on Full Duplex Bench, 71.6% on τ-Voice, and 74% on ServiceNow's EVA-Bench.
What does Grok Voice 3.0 cost?
The Voice Agent API is $0.08 per minute, or $4.80 per hour — unchanged from Grok Voice 2.0 — and per-task cost stays under comparable models.
Does it cope with interruptions and background noise?
Yes. Full Duplex Bench scores its turn-taking and interruption handling at 97%, while τ-Voice covers accented speakers and noisy rooms.
Where is it already running in production?
Millions of conversations a day inside Tesla vehicles and Grok Bot's voice mode, plus 20,000 calls daily through Starlink contact centers in several languages.
Put Grok Voice 3.0 to Work Today
The Voice Agent API is live at $0.08 per minute, and integrations already on grok-voice-latest switch over automatically — nothing to rebuild.