马斯克xAI新模型上线，通过“50米外洗车店”测试，回答偏好高度贴合老马本人

Core Viewpoint - The launch of Grok 4.2, despite internal turmoil at xAI, has generated mixed reactions from users, highlighting both praise and criticism for the new model [1][13]. Group 1: Model Release and Features - Grok 4.2 has been released as a public beta version, featuring 500 billion parameters, which is relatively modest compared to other models with trillions of parameters [1]. - The model is designed to self-iterate weekly, allowing for continuous updates and improvements based on real-time feedback [3][9]. - Users must manually select the beta version to use Grok 4.2, which introduces a rapid learning capability [9]. Group 2: User Feedback and Reception - Initial feedback has been polarized, with some users expressing disappointment in the model's performance, particularly in complex logical reasoning tasks [13]. - Critics suggest that Grok 4.2's capabilities may not match those of competitors like OpenAI and Anthropic, raising concerns about its practical effectiveness [13]. - Conversely, some users have praised Grok 4.2 for its coding abilities and multi-modal capabilities, indicating a divide in user experience [14]. Group 3: Elon Musk's Response and Future Plans - Elon Musk has actively defended Grok 4.2 on social media, emphasizing its potential for improvement and future updates [19]. - The current version is described as a "small" model, with plans for medium and large versions to be released later [19].