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Chasing 100M Daily Users, Duolingo Reconsiders Ads, Paying Influencers, and Its Most Expensive Plan

AI got cheap enough that Duolingo’s most expensive plan may not survive it. I read the earnings call transcript and opened the app to see what is actually changing for learners.

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XuetangX

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XuetangX is an open online learning platform for Chinese students. It offers massive courses in multiple disciplines, with a mission to build an affordable, quality learning environment for everyone.

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New Media and Cultural Studies
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Analyzes how new media shape culture through rhetorical, semiotic, gender, consumption, ritual, subcultural, spatial, technological, and globalization criticism.
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Aerospace Technology
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Survey aerospace technologies from aircraft classification and launch systems to aerodynamics, propulsion, navigation, composite structures, spacecraft platforms, and aeromedical rescue.
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Vaccines and Health
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Explores vaccine immunology, routine immunization, and emerging infectious-disease vaccine research, including Helicobacter pylori and dengue fever vaccines.
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Petroleum Production Engineering
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Covers oil-well flow, artificial lift, water injection, hydraulic fracturing, and acidizing for petroleum production design.
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- Free Online Course
Scientific Computing and the MATLAB Language
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Learn how MATLAB brings numerical computing, visualization, simulation, and programming into one environment for engineering and scientific problem solving.
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Psychiatry
1 rating

This course is mainly aimed at medical students in major medical colleges and social groups interested in psychiatry. It is taught by the "national excellent teaching team" with rich teaching experience - the teachers' group of Xiangya Department of Psyc…
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Pharmaceutical Analysis（药物分析）
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Pharmaceutical analysis through drug quality standards, chemical and bioanalytical methods, biological products, traditional Chinese medicine, genetic testing, and clinical monitoring.
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- Free Online Course
Liaoning Technical University
Mine ventilation
1 rating

Learn to design mine ventilation systems by analyzing underground airflow, harmful gases, resistance, air demand, fans, and ventilation equipment.
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Chongqing Vocational Institute of Engineering
Basics of Occupational health and safety
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Introduces basic occupational health and safety through workplace hazards, poisoning, radiation, biological agents, injury prevention, and worker health examinations.
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Optics Theory and Methods
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Explores refractive errors from optical foundations through diagnosis, treatment, prevention, and prescription writing for clinical optometry.
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Cambridge University Press
Reservoir Engineering
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Teaches practical reservoir engineering analysis, from PVT and reserves calculations to material balance, well testing, waterflooding, and CO₂ flooding.
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Music makes one healthy
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Music therapy uses music to support college students’ physical and mental health through mood, sleep, relationships, exercise, and everyday wellbeing.
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Shantou University
Fundamentals of Nursing
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Introduces the nursing process, clinical reasoning, and foundational bedside skills for safe patient care.
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Botany
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Explore plant structure, development, diversity, evolution, classification, and reproduction from cells to angiosperm families.
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An Overview of China
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An overview of China for international students, covering society, history, philosophy, language, arts, traditions, cuisine, and heritage to support cultural understanding.
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