How Duolingo Became The Most Popular Free Language Learning App

Learning a new language is difficult, especially if you are older than 18. However, Duolingo is a self-described “best way to learn a new language in the world” and will soon be aided by artificial intelligence (AI). Moreover, it is also giving translation agencies, such as Chinese Translation services, a run for their money. 

Duolingo launched in 2011, and through a potent mix of personalized learning, immediate feedback, and rewards, it has become one of the most downloaded educational apps today. 

Let’s look at how artificial intelligence helps Duolingo deliver personalized language lessons for its millions of users.

Duolingo And Its Vision To Offer Free Language Education

Duolingo’s mission is to “make education accessible and free for everyone in the world.” Its cross-platform app offers personalized training in over 30 languages. This is something that people do not get anywhere else. Previously, if one had to learn a language, the best method was to contact a professional instructor who would probably charge you hundreds of dollars, and the chances that his teaching methods would suit you are often minimal.

To overcome this uncertainty, Duolingo offers free and a 24/7 platform to learn any language that they want. You can start, take a break, and continue whenever you want. And that’s what makes it accessible for all. Duolingo also gives you the option to translate documents into many languages. So if you are working on a school project, and have to write an essay in Mandarin, you would not have to take aid from Chinese Traditional Translation Servies. The app alone would translate any document into the target language. 

Learning a language takes time. The U.S. State Department estimates that it can take 600 to 1,100 class hours to learn one language. Duolingo makes this easy by breaking it down into smaller chunks that can all be done simultaneously. It also offers a fun rewards system and points-based incentives. The app is free, but users who do not want ads can subscribe to the premium service for a monthly fee.

Utilizing AI To Attain That Vision

Duolingo’s goal to make language learning accessible and free is based on artificial intelligence. The AI-driven placement test determines the user’s starting knowledge of the language they are interested in learning. 

A Little Bit of Groundwork Will Help In Learning A New Language,

For example, if someone signs up to learn Malay and has had four years of high school Malay instruction, they are likely to be able to start Duolingo’s lessons more quickly than someone who had never heard it before. Gone are the days when one would have to get the source material translated from Malay Translation Services and then make an attempt to learn them. 

Placement Tests

The placement test adapts based on whether the user correctly answered the previous question. This allows the app to determine where each user is at the beginning of their understanding of the language. This test provides a quick indication of where each user should begin the course in just five minutes. This helps to create a positive user experience. It also reduces boredom among those who have little knowledge.

Spaced Repetition

Spaced repetition is another core feature of Duolingo’s app that uses artificial intelligence. Spaced repetition allows for personalized language lessons delivered over more extended periods to maximize learning rather than trying to squeeze too many lessons into a small amount of time. Duolingo’s learning methods also require the “lag effect.” 

Users will improve if the time between practice sessions is longer. Artificial intelligence controls all of this content delivery on the backend.

AI-Based Deep Learning Algorithms

Users will interact with the content differently as their language proficiency and learning expands. For example, AI-based deep learning algorithms predict the likelihood that a user can recall a word in a particular context. The algorithm then determines what user should continue practicing. To personalize learning experiences, the algorithms use user data.

Generating Data

Duolingo can generate a lot of data, which is crucial for creating predictive models. The company’s AI lead, Burr Settles, chose Duolingo over more prominent, more established companies because of its uniqueness, type, and quantity of data. For example, Duolingo’s half-life regression statistical model is based on analyzing the error patterns of millions of language learners to determine content delivery that’s appropriate for each user and their learning goals.


Duolingo’s AI-powered chatbots are designed to engage users and help them learn a language using text-based conversations. In addition, the bots help users improve their language skills through practice in a language and become more competent with each use. 

To deliver an immersive experience, the company is exploring virtual reality technologies. Meanwhile, chatbots will give a multilingual experience, hence, many LPSs, such as bengali translation services will provide assistance.

Wrapping Up

AI will improve if more people interact with it. The AI will eventually be able to imitate human language teachers, and the more it improves, the better it becomes. Duolingo’s artificial intelligence is gaining expertise and helping millions to learn new languages.AI is changing how businesses work across all industries.

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