马斯克终于开源Grok-2，称“中国公司将是最强大的对手”

Core Insights - xAI has officially open-sourced its best model Grok-2.5, with Grok-3 expected to be open-sourced in approximately six months. CEO Elon Musk claims xAI will soon surpass all companies except Google, with Chinese firms being the strongest competitors due to their superior power supply and hardware capabilities [1]. Group 1: Model Release and Performance - The open-sourcing of Grok-2 fulfills a promise made by Musk during its initial release, where he stated that previous versions would be open-sourced with each new release [2]. - Grok-2 was noted for its strong performance in coding, complex problem-solving, and mathematics, comparable to GPT-4o at the time of its release. However, it currently ranks outside the top 20 in benchmark tests, with Grok-4 and GPT-5 leading the scores [2][5]. - Grok-4, released in July, has a training volume 100 times that of Grok-2, indicating significant advancements in model capabilities [5]. Group 2: Open Source Licensing and Accessibility - xAI's open-source license is considered stringent, allowing non-commercial and compliant commercial use only if the associated company's annual revenue is below $1 million. Higher revenue companies require separate permission from xAI [5]. - In contrast to xAI, OpenAI's recent open-source models are more accessible for small to medium developers, allowing operation on high-end laptops and mobile devices, thus lowering barriers for emerging markets and resource-constrained industries [6]. - Grok-2's open-sourced files total approximately 500GB, requiring substantial computational resources (8 GPUs with over 40GB memory each) for operation, which may limit accessibility for individual developers [5].