xAI launches Grok Voice Think Fast 2.0 voice model
xAI
xAI released Grok Voice Think Fast 2.0, cutting reasoning-token usage by roughly 60% and time-to-first-audio from 1.25s to 0.70s versus version 1.0, priced at $0.08/minute. The default grok-voice-latest alias moves to 2.0 on August 5.
Why it matters
A notable latency and cost improvement for real-time voice AI, an area xAI is pushing to compete with OpenAI and Google's voice offerings.
Importance: 2/5
Noticeable minor-version voice-model update with real latency/cost improvements.