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How GenAI Costs Sank Duolingo’s Stock 20% (A Non-AI Generated Analysis)

A human analysis of financial documents reveals what AI content farms missed: Duolingo’s GenAI features are undermining its own profit margins.

Dhawal Shah Mar 10, 2025

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创业导引——与创业名家面对面


创投圈的成功导师程方、郭宇航、李竹、林森、罗键霆、马东、沈博阳、盛希泰、吴朝阳、杨歌、朱波等大咖和同学们坐而论道，全力打造未来的创新创业之星。
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工程伦理


《工程伦理》主要讲授工程中的职业道德问题，培养同学的工程伦理意识和分析论证能力。
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现代生活美学——插花之道


追寻天人合一哲学理念，梳理中国插花、日本花道以及西方花艺史；实用插花技巧、植物、色彩、插花造型等；关注内心体验，平衡心理，培育优雅生活方式。
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微积分（先修课）

希望学生能掌握微分学和积分学的基本思想和方法，能够处理微积分中的常见问题，使学生得到比较系统的数学训练，提升学生的科学素质。
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工程制图


工程制图课程不仅仅教会你看图和画图，更是你认识工程、走进工程的桥梁！
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高技术与现代局部战争


观战争风云，学兵法谋略，了解最新军事科技，把握未来战争的发展趋势，不管你军事迷，还是向往军旅生活的大学生，走进高技术局部战争课，定会大有收获。
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公共危机管理


风险与危机无处不在，无时不有！如何认知、准备与应对有关风险与危机，促进公共组织和社会平稳运行与安全发展，非常需要大家一起探讨危机管理之道。
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有机化学


世界上的有机化合物丰富多彩，结构复杂，而这些复杂的有机物是从何而来的？本课程将带你了解奇妙的有机化学，看看化学家们是如何创造出各种绚丽的有机分子。
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模拟电子技术基础(基础部分)

电子技术的应用“无所不在”。不管哪个领域、哪个行业，为实现现代化、自动化、信息化，就必须配以电子系统。“电子技术基础”课程教授实现电子系统必备的基础知识。
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大学物理1 (力学、热学)

大学物理是面向工科院系1、2年级本科生的物理基础课程, 大学物理1包括力学、热学两部分内容。在清华这个课程大致需要58课堂学时（1学时 = 45分钟）。
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信息素养——学术研究的必修课


本课程将助你提高信息素养，在多彩的信息海洋中精准捕获、享用高质量信息，在学术之道上不断创新、健步前行。
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营销：人人都需要的一门课


营销是企业核心的竞争力，也是人人都需要的一项能力。不管你是谁，不论你营销的是什么。
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C++语言程序设计进阶


C++是从C语言发展演变而来的一种面向对象的程序设计语言，本课程是一门面向广大初学者的入门课程。
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积极心理学（下）自强不息篇


本课程是积极心理学基础入门的概述性课程，旨在让学生科学系统地了解积极心理学的研究范畴，包括幸福、美德、亲社会心理与行为、福流、价值观与人生意义、积极心理学应用等内容。
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走进心理学


如何解读达芬奇密码？一个人梦游他自己知道么？先有语言还是先有思想？怎样能够拥有超凡的单词量？本门课将用最新最酷的心理学理论来解答这些问题。
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