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…