Duolingo

Who owns Duolingo?
Duolingo is a publicly traded company owned by its shareholders. It trades on NASDAQ under the ticker symbol DUOL. The company has a dual-class share structure with Class A shares (one vote per share) for public investors and Class B shares (20 votes per share) held by co-founders Luis von Ahn and Severin Hacker, giving them significant voting control. Major institutional holders include Vanguard Group and BlackRock.

Is Duolingo publicly traded?
Yes, Duolingo is publicly traded on NASDAQ under the ticker symbol DUOL. The company went public in July 2021 in an IPO that raised approximately $521 million. Duolingo reported FY2025 revenue of $1.04 billion and net income of $414.1 million. The company's FY2026 revenue guidance is $1.20 to $1.22 billion.

Who founded Duolingo?
Duolingo was founded in 2011 by Luis von Ahn and Severin Hacker, both of whom were at Carnegie Mellon University in Pittsburgh. Von Ahn, a Guatemalan-American computer scientist, previously invented CAPTCHA and reCAPTCHA and sold reCAPTCHA to Google in 2009. He conceived Duolingo as a way to provide free, high-quality language education to people worldwide.

Where is Duolingo headquartered?
Duolingo is headquartered in Pittsburgh, Pennsylvania, USA, where it was founded. The company maintains additional offices in New York, San Francisco, and other locations, with a significant portion of its workforce working remotely. Duolingo employs approximately 850 people globally, with its largest workforce concentration in the United States.

What is Duolingo's annual revenue?
Duolingo reported FY2025 revenue of $1.04 billion, a 39% increase from $748 million in 2024. The company achieved net income of $414.1 million and adjusted EBITDA of $305.9 million in 2025. In Q2 2026, revenue was $298.5 million, up 18% year-over-year. Duolingo's FY2026 revenue guidance is $1.20 to $1.22 billion, representing 15% to 18% growth.

What brands does Duolingo own?
Duolingo's product portfolio includes the Duolingo App (core language-learning platform), Super Duolingo (premium subscription), Duolingo Max (higher-tier subscription with AI features), Duolingo English Test (online English proficiency assessment), Duolingo for Schools (classroom tool), Duolingo ABC (literacy app for children), Duolingo Math, Duolingo Music, and Duolingo Chess.

What are Duolingo's key initiatives?
Duolingo's key initiatives in 2026 include prioritizing user growth and teaching quality over short-term monetization, expanding AI-powered Video Call features (with Lily and Falstaff) to more subscribers, expanding content to CEFR B2 level across nine languages, growing new subjects (chess, math, and music), testing a lower-priced Super Lite subscription tier, and working toward the medium-term goal of 100 million daily active users by 2028.

What controversies has Duolingo faced?
Duolingo has faced criticism that its gamified approach does not produce conversational fluency, controversy over contractor layoffs in 2024 that replaced some roles with AI, and backlash over an internal memo about assessing employee performance based on AI usage (which the company subsequently reversed). The Duolingo English Test has also faced scrutiny over test security and cheating prevention in at-home testing environments.

Duolingo was founded in 2011 by Luis von Ahn and Severin Hacker, both of whom were at Carnegie Mellon University in Pittsburgh. Von Ahn had previously invented CAPTCHA and reCAPTCHA and sold reCAPTCHA to Google in 2009. He conceived Duolingo as a way to provide free, high-quality language education to people around the world.

The beta launch in November 2011 generated enormous interest, with over 300,000 people signing up on the first day. The app initially offered Spanish, English, French, German, and Portuguese courses, with a distinctive owl mascot named Duo that became one of the most recognizable characters in educational technology.

Duolingo expanded rapidly through 2012 and 2013, launching iOS and Android apps and adding new languages. The platform's gamified approach, with daily streaks and experience points, proved highly effective at encouraging consistent practice. The company introduced Duolingo Plus, a premium subscription service offering ad-free learning, in 2017.

In 2019, Duolingo launched the Duolingo English Test, an online English proficiency assessment that could be taken at home for $49, significantly cheaper than TOEFL and IELTS. The test gained acceptance at hundreds of universities, particularly during the COVID-19 pandemic when in-person testing was disrupted.

Duolingo went public on NASDAQ in July 2021 in an IPO that raised approximately $521 million, valuing the company at approximately $5.7 billion. Following the IPO, the company continued to invest in AI and personalization, launching Duolingo Max in 2023, a premium subscription tier powered by GPT-4 that includes AI conversation practice (Roleplay) and AI-powered explanations.

In 2023, Duolingo expanded beyond language learning by launching Math and Music courses within the Duolingo app. In 2025, the company launched a Chess course, further diversifying its subject offerings. These expansions apply Duolingo's gamified teaching method to new subjects that, like languages, take years to master.

In 2025, Duolingo surpassed 50 million daily active users and generated over $1 billion in bookings for the first time. The company achieved record profitability with $414.1 million in net income. In Q4 2025, DAUs grew 30% year-over-year to 52.7 million, and paid subscribers reached 12.2 million.

In 2026, Duolingo launched Video Call with Falstaff, a new AI-powered conversation practice feature featuring a multilingual bear character who guides learners through structured speaking exercises. The company also expanded its content to Duolingo Score 129 (CEFR B2) across its nine most popular languages, enabling learners to reach professional proficiency. In Q1 2026 alone, Duolingo published 20,500 course units across its language courses, up from 7,100 per quarter in 2025 and 1,800 per quarter in 2024, driven by AI-powered content creation tools.

Duolingo's approach to sustainability and ethics is centered on educational accessibility, environmental responsibility, and ethical AI implementation.

The company's core mission is to provide free language education to people worldwide, particularly those who cannot afford traditional language courses. The freemium model ensures that core language learning content remains accessible to everyone regardless of economic status. In most countries, more people learn languages on Duolingo than through the public education system.

Duolingo operates primarily through cloud-based infrastructure and has committed to carbon neutrality across its digital operations. The company utilizes renewable energy sources for its data centers and implements energy-efficient coding practices. Its cloud-based model eliminates the need for physical textbooks and educational materials, reducing paper waste and transportation emissions.

The company implements ethical AI practices in its language learning features. AI-powered tools like Video Call and Explain My Answer are designed to respect user privacy and provide accurate, culturally sensitive language instruction. Duolingo maintains transparency about AI usage and provides users with control over their learning data.

In 2025, CEO Luis von Ahn sent an internal memo directing employees to use AI in as many places as possible. One provision of the memo, which stated that employee performance would be assessed partly based on AI usage, generated external controversy when it was interpreted as a signal of impending AI-driven layoffs. Von Ahn clarified that no employees were fired and the company actually hired more people. The company subsequently reversed the AI usage performance assessment provision. Duolingo did reduce its contractor workforce by approximately 10% in early 2024, replacing some roles with AI, which generated criticism about the impact of AI on creative and educational workers.

Duolingo promotes digital accessibility, ensuring its platform is usable by people with disabilities and providing features that support inclusive language learning. The company also maintains responsible content moderation practices to create safe learning environments for users of all ages.

Duolingo has received significant recognition for its educational innovation, mobile app design, and impact on global language education:

• Google Play Awards (2014 to 2025): Multiple awards including Best App, Best Educational App, and Users' Choice Award
• Apple App Store Awards (2013 to 2025): Consistent recognition as App of the Year and Best Educational App
• Fast Company Most Innovative Companies (2013 to 2025): Multiple years of recognition for revolutionizing language education through gamification and AI integration
• Webby Awards (2015 to 2025): Multiple awards for Best Educational App and Best User Experience in mobile learning
• EdTech Awards (2020 to 2025): Recognition for excellence in educational technology innovation and language learning solutions
• TIME Magazine Inventions of the Year (2013 and 2022): Inclusion among the year's best inventions for making language education accessible and engaging
• TIME100 Companies (2025): Recognition as one of the world's most influential companies
• Forbes AI 50 (2023 to 2025): Recognition for innovative AI integration in language learning through Duolingo Max

Duolingo has faced criticism from language-learning educators who argue that the app's gamified approach prioritizes engagement over genuine language acquisition, and that completing Duolingo courses does not produce conversational fluency. The company has responded by investing in more communicative features, including AI conversation practice through Video Call with Lily and Falstaff, spoken tokens that allow learners to speak answers to most exercises, and Speaking Adventures that prepare learners for real-world conversations.

In January 2024, Duolingo announced layoffs of approximately 10% of its contractor workforce, replacing some roles with AI. The announcement generated criticism about the impact of AI on creative and educational workers. CEO Luis von Ahn maintained that the changes were necessary to improve efficiency.

In 2025, an internal memo from von Ahn about AI usage became public, generating controversy. The memo directed employees to use AI in as many places as possible and included a provision about assessing employee performance based on AI usage. External observers interpreted this as a signal of impending AI-driven layoffs. Von Ahn clarified that no employees were fired and the company actually hired more people. The company subsequently reversed the AI usage performance assessment provision.

Duolingo has also faced scrutiny over the effectiveness of the Duolingo English Test as a measure of English proficiency, with some universities expressing concerns about test security and the ability to prevent cheating in an at-home testing environment. The company has invested in security measures to address these concerns.