Grok Voice Think Fast 2.0 Ranks First in Agent Evaluation, API Price Increases by 60%

SpaceXAI has released Grok Voice Think Fast 2.0, a voice agent model designed for customer service, sales, and telephony scenarios, capable of understanding users, generating voice responses, and invoking tools. The new version enhances reasoning, transcription, and conversational abilities. According to evaluations by Artificial Analysis, Grok's voice composite index stands at 82.9%, ranking second, just behind Tongyi Qwen Audio 3.0 Realtime Plus at 84.1%. In the τ-Voice benchmark test for customer service tasks, Grok ranked first with 56.5%, surpassing Qwen's 54.6% and GPT-Realtime-2.1 High's 45.7%. The first sound output time is 0.70 seconds. The API price has increased from $0.05 per minute to $0.08, a rise of 60%, making the hourly audio cost $4.80.

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