马斯克新模型性价比拉满：1折价格实现Gemini 2.5性能，支持2M上下文

Core Viewpoint - The article discusses the launch of Grok 4 Fast by Elon Musk's xAI, highlighting its competitive pricing and advanced capabilities in multimodal reasoning and context handling [1][3]. Group 1: Product Features and Performance - Grok 4 Fast achieves a price-performance benchmark by matching the price of Gemini 2.5 while offering a 2 million token context window [1][3]. - It significantly reduces token costs, using 40% fewer tokens on average compared to Grok 4 while maintaining similar performance levels [11][12]. - In benchmark tests, Grok 4 Fast outperformed Grok 3 Mini and ranked 8th in text arena competitions, demonstrating superior performance among similarly sized models [17][18]. Group 2: Competitive Advantage - Grok 4 Fast leads the "price-intelligence" ratio in the industry, as verified by independent assessments [14]. - It scored 1163 points in the search arena, outperforming the second-place model by 17 points, showcasing its competitive edge [18]. Group 3: Technological Innovations - The model employs end-to-end reinforcement learning to enhance its tool usage, excelling in determining when to invoke tools like code execution or web browsing [20]. - Grok 4 Fast integrates advanced search capabilities, allowing seamless web browsing and real-time data enhancement for queries [21][22]. - It features a unified architecture that reduces end-to-end latency and token costs, making it suitable for real-time applications [25]. Group 4: Market Position and Future Developments - Grok 4 Fast is now available to all users, with complex queries automatically utilizing its capabilities in Auto mode [26]. - Two new models are set to be launched, with specific pricing for input and output tokens detailed [27]. - The recruitment of Dustin Tran from Google, a key figure in the development of Gemini models, strengthens the team behind Grok 4 Fast [28][30].