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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 Courses

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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Advance of Infection and Immunity

Explore how pathogens interact with immunity, from antimicrobial resistance and immune evasion to coronavirus vaccines.
- XuetangX
- Self-Paced
- Free Online Course
Pathophysiology

Explore how disease processes arise and evolve, from fluid and acid-base imbalances to hypoxia, shock, organ failure, and their clinical mechanisms.
- XuetangX
- Self-Paced
- Free Online Course
Pharmacology

Explains drug mechanisms and kinetics, then connects major therapeutic classes to clinical uses, efficacy, and adverse reactions.
- XuetangX
- Self-Paced
- Free Online Course
Medical Immunology

A medical immunology survey linking immune-system fundamentals to clinical topics such as hypersensitivity, transplantation, and tumor immunity.
- XuetangX
- Self-Paced
- Free Online Course
Medical Ethics

Explores ethical decision-making in medicine, from informed consent and confidentiality to euthanasia, organ allocation, reproduction, and human-subject research.
- XuetangX
- Self-Paced
- Free Online Course
Neuroanatomy

A medical neuroanatomy course tracing the brain, spinal cord, cranial nerves, pathways, meninges, and blood vessels from structure to clinical cases.
- XuetangX
- Self-Paced
- Free Online Course
Everyone Loves Design

Design is everywhere. Design is a way of thinking that teaches us how to find problems and how to solve them effectively. Design is a mirror; it is the epitome of the world. Let’s learn how to find the beautiful world around us and live a more positive a…
- XuetangX
- Self-Paced
- Free Online Course
Chinese Language --Express to HSK

Reach HSK Level 3 through sitcom dialogues, comic-supported texts, pronunciation practice, and rap-based review of Chinese vocabulary and grammar.
- XuetangX
- Self-Paced
- Free Online Course
Financial English

The course is aimed to help senior or graduate students majored in Finance or Economics learn about China's financial systems and reforms, and increase their financial know-how and progmatic abilities to deal with financial businesses.
- XuetangX
- Self-Paced
- Free Online Course
Introduction to Political Philosophy

Examines competing political values—liberty, community, equality, hierarchy, democracy, and meritocracy—through influential Chinese and Western arguments.
- XuetangX
- Self-Paced
- Free Online Course
Development Neurobiology

Explores how the nervous system forms, from neural tube patterning and neuronal migration to synapse formation and programmed cell death.
- XuetangX
- Self-Paced
- Free Online Course
Beijing University of Civil Engineering and Architecture
国际学术会议英语


Master full-scenario English for international academic conferences, from paper preparation and oral presentations to Q&A, chairing, and academic networking.
- XuetangX
- Self-Paced
- Free Online Course
Linear Algebra with Applications

Connects foundational linear algebra theory to practical applications through solving linear equations, including web search, economic models, and image transformation.
- XuetangX
- Self-Paced
- Free Online Course
Calculus Ⅱ

Practice more, learn more! Wish you enjoy this course and get profits from our lectures.
- XuetangX
- Self-Paced
- Free Online Course
Complex Variables and Integral Transforms

Let's take you into the magic world of complex numbers and complex functions. Join us, enjoy your study!
- XuetangX
- Self-Paced
- Free Online Course

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