A single backend response can do a lot more than you think.

What's our formula for creating the math course? We'll tell you!

Duolingo优化学习和增长的关键指标是时间学习良好度（TSLW）。他们通过一系列措施提高TSLW，如优化每日任务的顺序、改变每月挑战的基准、调整XP奖励与学习效果的比例等。他们发现，延长学习时间、增加新内容以及避免学习者疲劳对TSLW有积极影响。Duolingo的目标是帮助学习者实现自己的学习目标，持续改进TSLW有助于实现这一目标。

Are you up for a little challenge? Here's what makes something the right level of difficulty for a learner!

Chatbots promise a lot of exciting things—but do they make good conversation partners?

These are the 5 principles that guide Duolingo's growth strategy!

Our app size had steadily increased since 2020 at roughly 50MB per year. It was time for some spring cleaning!

Duolingo's human teaching experts are using AI to make new lessons faster than ever!

已经有很多产品从 Duolingo 身上汲取了灵感。

Our Data Science team developed a growth framework that helped to grow DAUs by 4x since 2019. Let’s explore the path that led us to that framework, aka The Growth Model!

Our Data Science team developed a growth framework that helped to grow DAUs by 4x since 2019. Let’s explore the path that led us to that framework, aka The Growth Model!

We love our summer interns, and we’re particularly proud of our Thrive Program, an 8-week program that provides second-year students from communities underrepresented in tech the chance to develop their technical skills and experience life at Duolingo.

Our Thrive interns always get to work on incredibly impactful projects, and their work lives on long after they leave! Meet Monica, whose work with the art and design team included bringing a brand-new animation technique to the company!

The AI that powers the language-learning app today could disrupt education tomorrow.

Duolingo wants their learners to gain the skills they need to communicate in a new language. Here's how they evaluate the app's effectiveness!

The Duolingo cast now lip syncs along during your lessons!

Learn more about how we’re creating custom text-to-speech voices for all of our characters.