马斯克新模型性价比拉满：9折价格实现Gemini 2.5性能，支持2M上下文

Core Insights - The article discusses the launch of Grok 4 Fast, a new multimodal reasoning model by Elon Musk's xAI, which offers competitive pricing and enhanced performance compared to existing models like Gemini 2.5 [1][17] - Grok 4 Fast features a 40% reduction in average token usage while maintaining similar performance to its predecessor, Grok 4, setting a new benchmark for cost-effectiveness in AI models [6][15] - The model has achieved top rankings in various performance tests, demonstrating significant advantages over competitors in both search and text arenas [10][11] Performance and Features - Grok 4 Fast has been evaluated to have the best "price-intelligence" ratio among publicly available models, according to independent assessments [8] - In the search arena, Grok 4 Fast scored 1163 points, leading by 17 points over the second-place model, showcasing its superior capabilities [10] - The model employs end-to-end reinforcement learning to optimize tool usage, enhancing its ability to perform complex queries and real-time data integration [12][15] Development and Talent Acquisition - The development of Grok 4 Fast is supported by the recent hiring of Dustin Tran from Google, who has a strong background in AI and has contributed significantly to the Gemini series [17][20] - Dustin Tran's expertise includes a notable academic record with over 20,000 citations, indicating a high level of recognition in the field of artificial intelligence and machine learning [20][21]