Duolingo
多邻国
Duolingo is an AI-first education company co-founded by Luis von Ahn and Severin Hacker, originating as a research project at Carnegie Mellon University . Its mission is to make high-quality education universally accessible by using technology to replicate one-on-one tutoring at near-zero marginal cost . The company went its first five years without revenue while prioritizing this mission over monetization .
Today Duolingo operates on a freemium model with roughly 130 million monthly active users, keeping core daily learning free while monetizing through tiered subscriptions (Free, Super, and Max) and advertising . Its growth engine is a culture of relentless experimentation—internally called the "Green Machine"—where features like the streak counter emerged from one test and were then optimized through hundreds of subsequent iterations . The company has leaned aggressively into AI: it was among OpenAI's first GPT-4 partners, uses ElevenLabs for voice technology, and in April 2025 announced a full AI-First restructuring that let it add 148 courses in one year after previously taking twelve years to build its first hundred . That move briefly triggered a subscriber backlash . Union Square Ventures led its Series A and remains its most cited helpful investor .
AI-generated — may contain errors, please verify.
Coverage
FOMO won't take us in the right direction; the goal is to stay in the game
"Investors never take responsibility for their advice."
Taking a Leave from Columbia to Build a Startup: Don't Ask ChatGPT, Ask Hyperknow 3.0
We want to serve everyone who stays curious about knowledge.
Duolingo Talks to Early-Stage Founders: How to Build a Fun Product in the AI Era?
Because it's weird, because it's fun, because it's one of a kind.
On the "Ruins" of Double Reduction, Rebooting Life with AI | A Conversation with Serial Entrepreneur Liu Ye: From Zuoyebang to Talkit
AI Will Change Education, But Education Won't Be Only AI | MonoX
The bottleneck in learning is no longer knowledge itself, but rather willingness and focused attention.
Ten Thousand-Word Interview with Duolingo Co-Founder: From 12 Years for 100 Courses to 148 Courses in One Year — How AI Drives Super App Growth
When a major technological shift hits, you have to be willing to challenge every company's underlying assumptions.
First Investment Deal Agent Bobby Launches; Exclusive Interview with Vakee
Never underestimate anything you see in life.
Agent Neo Launches: A Conversation with CEO Derek and CMO Guai Zi on Building the Ultimate AI Creation Tool
Young dreamers aiming for the stars.
Let's Talk "Truth" in AI-to-Consumer Products: Why Did Duolingo Take Off? How Are Gen Z Building AI Hardware? | What's Next Event Recap
On May 25, the **"What's Next: Finding Next-Gen AI Entrepreneurs"** event series — AI2C session, co-hosted by **Yunqi Capital**, the Shanghai Jiao Tong University Industrial Technology Research Institute (ITRI), and DataWhale, was successfully held in Shanghai. **More than 30 entrepreneurs actively seeking GenAI innovation opportunities** joined **Yunqi Capital investors** with deep expertise in AI venture capital and the **SJTU ITRI team**, an AI-native incubator,
Agent Neo Launches: A First-Hand Conversation with CEO Derek and CMO Guai Zi — The Starry-Eyed Founders Building the Ultimate AI Creation Tool
Ten Thousand-Word Interview with Perplexity's Growth Lead: People Need to Hear About Your Product 3 to 7 Times Before They Actually Try It
Growth is a game of intuition.
Bolt Picks | How to Evaluate Large Models More Effectively — Evals Are All You Need
In the pre–large model era, machine learning engineers would often joke that their job was "alchemy." Once the basic model training architecture stabilized, engineers spent more than half their time on cleaning and filtering training data. For applications built on large models, prompt engineers face a similar shift: the core of their work revolves around how to evaluate products efficiently and accurately. Today, drawing on an article by Michael Taylor about...
When a Male Celebrity Decides to Become a VC | Is Silicon Valley Burning?
"Life can be far broader than you imagine."
