Grok Voice 3.0
Test Grok Voice 3.0 speech-to-speech in your browser: hear sub-second replies, natural turn-taking, and call-grade accuracy before you touch the API.
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Inside the Grok Voice 3.0 Speech Engine
An 86.9 score on independent speech benchmarks, replies that land in under a second, and the same stack that answers Starlink support lines every day.
- Benchmark-Topping Conversational AccuracyHolds the highest spot on the Artificial Analysis Speech-to-Speech Index at 86.9, a score built from speech reasoning, τ-Voice, and blind preference tests.
- Replies That Land in Under a SecondLatency stays below one second while a 97% Full Duplex Bench result keeps pauses, turn-taking, and mid-sentence interruptions sounding human.
- Battle-Tested on Tesla and Starlink TrafficHandles millions of daily conversations across Tesla and SpaceX, including 20,000 Starlink support calls a day — about 70% closed with no human involved.
Put Grok Voice 3.0 to Work in Four Moves
From your first API call to multilingual call automation — here is the shortest path from signup to a voice agent that handles real customers.
Grok Voice 3.0 Capabilities That Matter in Production
Four benchmarks decide whether a voice agent survives launch: accuracy, latency, robustness, and cost. Here is how the model performs on each.
Ranked First on Independent Tests
It holds the top spot on the Artificial Analysis Speech-to-Speech Index at 86.9 and sets a fresh record for closing customer support calls.
Conversation Flow That Feels Human
A 97% Full Duplex Bench score shows how gracefully it handles silences, speaker switches, and people talking over it in live calls.
Steady Under Accents and Background Noise
The τ-Voice suite throws accented speakers, crowded rooms, and interruptions at the agent; this model comes out at 71.6%.
Smart Without the Slowdown
On τ-Voice it matches GPT-Live-1 (Astra) while finishing 40% faster, widening the range where an agent can be both sharp and quick.
Cheaper per Finished Task
Artificial Analysis's Big Bench Audio run puts its spend per task under both GPT-Live-1 (Astra, Medium) and GPT-Realtime-2.1.
Built for Enterprise-Grade Accuracy
On ServiceNow's EVA-Bench it takes the top accuracy figure at 74%, plus the best combined accuracy and customer-experience result.
Grok Voice 3.0: Straight Answers
Quick replies on accuracy, speed, pricing, and how the model behaves on live customer calls.
What exactly is Grok Voice 3.0?
It is a speech-to-speech model positioned as the most intelligent of its kind, and it ships in the API at the same rate as the version before it.
How accurate is it, really?
It takes first place on the Artificial Analysis Speech-to-Speech Index with 86.9 and posts 97% on Full Duplex Bench.
How quickly does it respond on a call?
Latency sits under one second, and on τ-Voice it answers 40% faster than GPT-Live-1 (Astra).
What does Grok Voice 3.0 cost to run?
The Voice Agent API bills $0.08 per minute, or $4.80 per hour — unchanged from Grok Voice 2.0.
Does it hold up on real support calls?
Yes. Starlink routes 20,000 calls a day through it in several languages, and roughly seven in ten are resolved without a person.
My agent runs grok-voice-latest — do I need to do anything?
Nothing. The upgrade was applied behind the scenes, so no code changes or redeploys are required.
Put Grok Voice 3.0 on Your Next Call
Spin up the top-ranked speech-to-speech model today: under-a-second replies, enterprise call resolution, and $0.08/min pricing that never moved.