xAI launches Grok Voice 3.0 speech-to-speech model at $0.08 per minute

xAI announced Grok Voice 3.0 on October 14, 2026, available in its Voice Agent API at $0.08 per minute — the same price as the previous version. Artificial Analysis ranked it first on the Speech-to-Speech Index with a score of 86.9, ahead of GPT-Live-1 (83.2) and Gemini 3.8 Live (82.6).

• Speech-to-Speech Index: Grok Voice 3.0 at 86.9, GPT-Live-1 at 83.2, Gemini 3.8 Live at 82.6
• Sub-second latency, priced at $0.08 per minute or $4.80 per hour
• Top accuracy of 74% on ServiceNow's EVA-Bench for enterprise voice agents
• Grok Voice handles 20,000 Starlink calls daily, 70% resolved without a human