分类：AI大模型

English Summary: Changyan Guoyu is an Android app developed by iFLYTEK that integrates Putonghua testing, learning guidance, simulation exercises, and personalized recommendations to help users master standard pronunciation and expression skills. It uses evaluation technology aligned with the National Putonghua Proficiency Test to provide accurate results and tailored learning paths. (中文摘要翻译：畅言国语是一款由科大讯飞开发的安卓应用，集普通话测试、学习辅导、模拟练习和个性化推荐于一体，旨在帮助用户掌握标准发音和表达技巧。它采用与国家普通话水平测试同源的评测技术，提供准确结果和个性化学习路径。)

English Summary: iFLYTEK has developed a national common language learning platform using its intelligent speech technology, which has been certified by the Ministry of Education and tested on over 50 million users. The platform addresses the uneven proficiency in Mandarin among teachers in ethnic minority regions by providing a closed-loop system that includes language diagnosis, intelligent learning recommendations, specialized training modules, and assessment tools, covering all four language skills: listening, speaking, reading, and writing. 中文摘要翻译：科大讯飞利用其唯一经教育部鉴定、累计测试超5000万用户的智能语音技术，研发了国家通用语言学习平台。该平台针对少数民族地区教师普通话能力参差不齐的现状，构建了从语言诊断到推荐学习、专项训练、培训考核的闭环系统，覆盖“听、说、读、写”四大语言技能，全面提升学习者的语言应用能力。

English Summary: Changyan Mandarin APP is a comprehensive mobile application designed for Mandarin proficiency test preparation and learning. It offers features like test registration, simulated exams, pronunciation correction, and live courses, targeting professionals such as teachers, broadcasters, and public service workers. (中文摘要翻译: 畅言普通话APP是一款专为普通话水平测试备考和学习设计的综合性移动应用，提供考试报名、模拟测试、发音纠正和在线直播课程等功能，主要面向教师、播音员和公共服务行业人员等专业人士。)

This article provides a structured learning path and essential resources for beginners in data science, covering foundational concepts, practical tools, and career development strategies. (本文为数据科学初学者提供系统学习路径和核心资源，涵盖基础概念、实用工具和职业发展策略。)

English Summary: xAI's Grok-4 model, launched in July 2025, claims to be the world's strongest AI with superior logical reasoning and language understanding, achieving doctoral-level academic performance. The Grok-4 Heavy version scored 44.4% on the Humanity's Last Exam benchmark. While official access requires paid subscriptions, the DeepSider browser extension offers free access to Grok-4 and other top models like GPT-4o and Claude 4 Sonnet for Chinese users without VPN or foreign email requirements. 中文摘要翻译：2025年7月，马斯克旗下xAI公司发布Grok-4模型，号称“世界最强AI”，具备更强的逻辑推理和语言理解能力，学术表现达博士水平。Grok-4 Heavy在Humanity's Last Exam基准测试中获44.4%高分。官方需付费订阅，但DeepSider浏览器插件为国内用户提供免费体验Grok-4、GPT-4o等顶级模型的便捷途径，无需翻墙或海外邮箱。

Grok-4, xAI's latest LLM launched in July 2025, excels in reasoning, coding, and multimodal tasks, competing directly with GPT-4o and Claude 4. It features real-time data access via X platform and strong benchmark performance in math/science domains. (Grok-4是xAI于2025年7月发布的最新大语言模型，在推理、编码和多模态任务中表现卓越，直接对标GPT-4o和Claude 4。其通过X平台实现实时数据访问，在数学/科学基准测试中表现突出。)

English Summary: This guide introduces Grok-4.1 Chinese version, which achieves a leading 1483 Elo score on LMArena, surpassing GPT-5 by 31 points. It highlights key advantages for Chinese users: no VPN required, optimized Chinese dialogue, and access through domestic mirror sites. The article also covers performance metrics like 65% reduced hallucination rate and high EQ-Bench scores, along with practical usage tips and safety assurances. 中文摘要翻译：本指南介绍Grok-4.1中文版，该模型在LMArena上以1483分领先，超越GPT-5达31分。重点突出对中国用户的优势：无需翻墙、中文对话优化、通过国内镜像站访问。文章还涵盖性能指标，如幻觉率降低65%、高情商得分，以及实用使用技巧和安全保障。

Grok-4 is xAI's next-generation multimodal AI model featuring 130K token context, first-principles reasoning, real-time DeepSearch, and specialized Grok4 Code for programming. It offers free limited access, competes with leading AI systems, and provides enterprise-grade APIs with advanced security. (Grok-4是xAI开发的下一代多模态AI模型，具备13万词元上下文窗口、第一性原理推理、实时DeepSearch搜索和专用编程模型Grok4 Code。提供限时免费访问，与主流AI系统竞争，并配备企业级API和高级安全功能。)

Grok-3 is xAI's advanced AI chatbot designed for complex reasoning, programming assistance, and real-time information retrieval. It builds upon Grok-1 and Grok-2 with enhanced contextual understanding, logical reasoning, and problem-solving capabilities, integrated with live data sources for up-to-date responses. (Grok-3是xAI开发的高级人工智能聊天机器人，专为复杂推理、编程辅助和实时信息检索而设计。它在Grok-1和Grok-2的基础上进行了升级，具备更强的上下文理解、逻辑推理和问题解决能力，并与实时数据源集成，提供最新信息。)