xAI's Grok Voice 2.0 thinks while it talks
xAI just released Grok Voice 2.0, a speech-to-speech model that reasons through queries in parallel while speaking, cutting time-to-first-audio down to 0.7 seconds. It beat GPT-Realtime-2.1 on Artificial Analysis benchmarks and costs $0.08 per minute, making high-speed, human-like voice agents practical for real-world phone calls.