xAI Grok Voice 3.0
xAI's new flagship speech-to-speech voice model, live in the Voice Agent API at unchanged $0.08/min pricing; grok-voice-latest alias auto-migrated on Oct 14.
Why it matters
Tops the independent Artificial Analysis Speech-to-Speech Index at 86.9 with sub-second latency, battle-tested on millions of daily Tesla/SpaceX conversations.
What you could build with it
An indie developer could build a multilingual phone support agent for small businesses on the WebSocket Speech-to-Speech API, using short-lived ephemeral tokens so API keys never sit on customer devices.
Does it hold up?
Too early to judge: launched ~10h ago. Live in the Voice Agent API with unchanged pricing and endpoints; only vendor benchmarks plus xAI-cited Artificial Analysis scores so far.
Built with xAI Grok Voice 3.0
- Grok Voice 3.0 Took Over grok-voice-latest on October 14. Pin Your Voice Agent's Modelarticle · Third-party walkthrough of the Oct 14 alias switch and why developers must pin model versions to avoid silent model changes in production voice agents.
Learn more
xAI release notes: Grok Voice 3.0 launch and 2.0 deprecation →
First spotted on x: source.
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