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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.

Dhawal Shah Sep 03, 2026

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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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AI TIME：KDD 2021-2

An artificial intelligence course titled “AI TIME,” associated with KDD 2021-2.
- XuetangX
- Self-Paced
- Free Online Course
AI TIME:KDD2021-3

AI TIME:KDD2021-3, a course focused broadly on artificial intelligence.
- XuetangX
- Self-Paced
- Free Online Course
AI TIME PhD：ACL2021-1

AI TIME PhD：ACL 2021-1，面向博士阶段的人工智能专题课程。
- XuetangX
- Self-Paced
- Free Online Course
AI TIME：ICML 2021-4

An AI-focused course connected to ICML 2021.
- XuetangX
- Self-Paced
- Free Online Course
AI TIME：ICML 2021-3

An AI TIME course segment identified as ICML 2021-3.
- XuetangX
- Self-Paced
- Free Online Course
Speak it out —— Overseas English for Railway Engineering (海外铁路工程实用口语)

Practical spoken English for overseas railway engineers, built around airport, construction-site, passenger-service, quality-control, safety, and meeting scenarios.
- XuetangX
- Self-Paced
- Free Online Course
中国手语国际版 International Edition of Chinese Sign Language

Learn Chinese Sign Language for everyday communication while exploring Chinese deaf and sign language culture.
- XuetangX
- Self-Paced
- Free Online Course
Online Education Dialogue

A dialogue-focused introduction to online education.
- XuetangX
- Self-Paced
- Free Online Course
Business English( listening &speaking)

Practice listening and speaking for practical business situations, from airport reception and travel to meetings, negotiations, interviews, and export.
- XuetangX
- Self-Paced
- Free Online Course
Sports and Society

A multidisciplinary exploration of how sports shape—and are shaped by—society, politics, economics, culture, identity, and everyday life.
- XuetangX
- Self-Paced
- Free Online Course
Tsinghua Higher Education Forum

A forum reexamining universities’ mission, social responsibility, ideals, and the possibilities of technology-empowered higher education.
- XuetangX
- Self-Paced
- Free Online Course
Global MOOC and Online Education Conference 2021

A 2021 conference focused on MOOCs and online education worldwide.
- XuetangX
- Self-Paced
- Free Online Course
2023 Global MOOC and Online Education Conference

A global conference focused on MOOCs and online education.
- XuetangX
- Self-Paced
- Free Online Course
Chinese Literature

Explore Chinese classic literature through nine themes including morality, nature, love, wisdom, and humanity.
- XuetangX
- Self-Paced
- Free Online Course
Online Education Dialogue 2021

A dialogue on online education in 2021.
- XuetangX
- Self-Paced
- Free Online Course

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