From the source
xAI announced Grok Voice 3.0 on October 14, 2026, making the speech-to-speech model available in its Voice Agent API at $0.08 per minute.
The company described Grok Voice 3.0 as the world’s most intelligent voice model and said it sets a new record for resolving customer support calls, with latency under one second and a lower running cost than other frontier models.
According to xAI, Grok Voice powers millions of conversations a day across Tesla and SpaceX, and the new version launched at the same price as its predecessor.
Benchmark Results Cited by xAI xAI’s announcement cited independent testing by Artificial Analysis dated October 13, 2026, reporting that Grok Voice 3.0 ranks first on the Speech-to-Speech Index with a score of 86.9.
The comparison table published with the announcement lists GPT-Live-1 (Astra, Medium) at 83.2, Gemini 3.8 Live (Extended Thinking, High) at 82.6, and Grok Voice 2.0 at 81.3.
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