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StevenLopez
StevenLopez
July 31, 2026

xAI launched Grok Voice Think Fast 2.0, a speech recognition and generation model now available to developers at $0.08/min. It scored 82.9% in benchmarking, outperforming GPT-Realtime-2.1 and Gemini 3.1 Flash. Transcript accuracy improved 1.4x, response time reduced to 0.70 seconds. Parallel inference and reinforcement learning enhance tool calling. Validated in Starlink phone services, boosting sales and customer service. Old version switches to new on August 5, 2026.

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