Duolingo, Inc. – A Rule of 70 Facing AI Disruption (A Deep Dive)
Assessing Duolingo’s fundamentals, expansion runway, and the structural risk AI poses to its future - Here's all you need to know about Duolingo!
When you think of language learning in the digital age, chances are the green owl comes to mind. Duolingo has become the default app for millions of learners worldwide, turning what was once a tedious chore into a gamified daily ritual. With streaks, leaderboards, and bite-sized lessons, the company has cracked the code on engagement in education, something competitors have struggled to replicate.
Yet Duolingo is no longer just a language app. Since its founding in 2011, the company has steadily expanded into English proficiency testing, literacy, math, and even chess, reflecting its ambition to become a comprehensive digital education platform. Its consumer-first model, coupled with a broad global reach and strong brand equity, has enabled it to grow at a remarkable 40%+ revenue CAGR since its initial public offering, making it one of the fastest-growing consumer tech companies in the market, while also being highly profitable. In fact, Duolingo is a unique Rule of 70 business, delivering 40%+ growth and 30%+ FCF margins.
For investors, the question is whether Duolingo’s playful design and global scale translate into a durable long-term advantage. The company sits at the intersection of powerful secular trends—rising global demand for English, the digitalization of education, and AI-driven personalization—but it also faces the looming risk of AI disruption, particularly from real-time translation tools, which have already sent its shares down by some 40% from their May 2025 all-time highs. Understanding where Duolingo fits within the broader education and technology landscape is crucial for gauging whether its growth runway can sustain its premium valuation.
In today’s 5500-word Deep Dive, I’ll go over everything investors need to know and consider when owning or considering picking up Duolingo shares.
Let’s delve right in – this is my Duolingo Deep Dive!
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This is Duolingo
Business fundamentals
Founded in 2011 by Luis von Ahn and Severin Hacker, Duolingo was created with the mission of making high-quality education accessible to everyone, regardless of their background or financial means.
Today, it is a leading digital education platform best known for its language-learning app, which combines gamification, artificial intelligence, and behavioral science to create an engaging and adaptive experience, allowing users to study more than forty languages at their own pace.
What sets Duolingo apart and has contributed to its success to date is the way it reframes learning as a daily habit rather than a chore. Lessons are structured as short, interactive exercises designed to fit seamlessly into everyday routines, while features such as streaks, leaderboards, and playful characters turn progress into a motivating game. This unique blend of entertainment and education not only makes language learning more enjoyable but also drives consistency and long-term retention, helping Duolingo reach a scale and level of engagement that few other education platforms have achieved.
In fact, it’s this unique approach - its playful design, use of characters like Duo the owl, and community-driven features – that have made it the most downloaded educational app in the world, and the undisputed leader among all language learning apps.
Simply put, Duolingo has built a global platform that makes language learning accessible, engaging, and scalable.
However, Duolingo isn’t just a language learning app any longer, but is slowly becoming a true digital education platform. Yes, its core product remains language learning, offering more than forty courses. Still, the business has steadily expanded its scope, moving beyond language education to include literacy programs, English proficiency testing, and other subjects (like math and chess), reflecting its broader ambition to become a comprehensive learning platform.
The Duolingo English Test, for example, has gained global recognition as an affordable and accessible alternative to traditional standardized tests, accepted by over 5,000 universities worldwide. This test offers a highly scalable alternative to traditional exams, such as the TOEFL or IELTS. It has become a strategic growth area for the company, given the rising global demand for English proficiency.
Additionally, the initial adoption of its new courses, such as math and chess lessons, has seen excellent traction since their release. Although Duolingo isn’t rushing anything, these new courses are being rolled out gradually, and adoption has been fantastic so far.
Yet, interestingly, despite this push to become a broader digital education platform, Duolingo still generates the far majority of its revenue from consumers rather than businesses.
The app is designed as a direct-to-consumer product, and the company’s subscription tiers, in-app advertising, and Duolingo English Test fees are all paid primarily by individual learners.
Unlike many edtech companies that focus on enterprise contracts or institutional sales, Duolingo has deliberately avoided a B2B-heavy model. Universities and institutions technically use the Duolingo English Test for admissions, but the test-takers themselves—not the schools—pay for it. This means the company’s revenue still flows from the consumer side.
From the outset, the company aimed to make education universally accessible, which meant developing a product that anyone with a smartphone could use at no cost. This consumer-first design created an enormous funnel of users, giving Duolingo both scale and brand visibility that would have been difficult to achieve with a traditional enterprise-focused model.
The business model naturally followed this approach. Subscriptions and ads monetize at the individual level, allowing Duolingo to capture value from millions of casual learners worldwide without relying on the slow sales cycles, bureaucracy, and limited budgets that often constrain enterprise EdTech.
By prioritizing the consumer, Duolingo has built a highly scalable, globally recognized platform that grows virally and monetizes directly from its users.
That then brings me to the following fundamental question: How does Duolingo generate revenue?
Well, it blends a free, ad-supported offering with premium subscription tiers.
The largest share of revenue comes from its premium subscription tiers—Duolingo Super and Duolingo Max—which provide learners with an ad-free experience, unlimited “energy”, offline access, and, in the case of Max, AI-powered tutoring features. Subscriptions are offered on a monthly or annual basis, and this recurring revenue stream has grown rapidly as more of the company’s vast free user base converts to paying customers.
Additionally, advertising remains a meaningful contributor, particularly since the majority of Duolingo’s users engage with the free version of the app. Ads are displayed between lessons, and while monetization per user is low compared with subscriptions, the sheer scale of Duolingo’s audience—hundreds of millions of learners globally—allows advertising to contribute steadily to the top line.
A final piece of the revenue stream comes from the Duolingo English Test.
Together, these three sources—subscriptions, ads, and testing—form a balanced monetization strategy that allows Duolingo to pursue both mass-market reach and high-margin recurring revenue.
Although it’s essential to note that subscriptions are by far its primary source of revenue, accounting for roughly 84% of revenue and still outgrowing the other two sources amid healthy paid conversion and a growing ARPU.
The company is also excellently diversified geographically. In 2024, the United States accounted for approximately 42% of revenue, or roughly $311 million; however, the larger share now comes from international markets, which collectively contribute nearly 60%. This balance underscores Duolingo’s global reach and universal appeal, supported by a product that requires little localization beyond language content itself.
Adding to this strength is the fact that Duolingo remains founder-led. Luis von Ahn, who co-founded the company with Severin Hacker in 2011, continues to serve as CEO and Chairman of the Board, while Hacker remains CTO and a member of the Board. Their ongoing leadership ensures that Duolingo’s strategy remains closely aligned, allowing for agile execution. Insider ownership sits at around 14%, a relatively high level for a public company of this size, further aligning management’s incentives with long-term value creation for shareholders.
All of this - its unique, playful, and habit-forming approach to learning, its consumer-first model, global reach, and founder-led continuity - has translated into exceptional financial performance. Since its IPO, Duolingo has delivered a compound annual growth rate of approximately 44% in revenue, positioning it among the fastest-growing companies in the consumer technology and education sectors.
Taken together, Duolingo’s global scale, consistent growth, and founder-led vision reinforce its positioning as not only the dominant player in app-based language learning but also as a rising force in the broader digital education landscape.
On that note, let’s delve into Duolingo’s long-term growth drivers!
What are Duolingo’s primary growth drivers?
Duolingo’s long-term growth potential rests on a set of powerful structural drivers that extend well beyond the temporary boost it received during the coronavirus pandemic. While app usage surged during lockdowns and downloads briefly pulled back in 2021 and 2022, the underlying market dynamics remain intact. Less than one-third of all language learning today takes place on mobile, and online services account for just 12% of the industry’s revenue, meaning there is still enormous headroom for app-based platforms like Duolingo to capture share.
The first and most fundamental driver is the rising global demand for English proficiency. In emerging markets, English is closely tied to access to higher education, career advancement, and social upward mobility. Duolingo’s mobile-first, affordable model is uniquely positioned to serve these learners at scale.
The second growth lever is subscription monetization. Despite having hundreds of millions of learners on the platform, only a small percentage — under 10% — currently pay for premium tiers. This under-penetration represents significant conversion runway. The introduction of higher-priced products, such as Duolingo Max, powered by generative AI, delivers conversational role-play and real-time explanations, giving the company both upsell potential and pricing power. As AI enhances the value of the learning experience, Duolingo can gradually expand average revenue per user without sacrificing accessibility.
We can already see this trend developing today, as paid penetration continues to rise amid an improved premium offering, and ARPU grows as a result of more users upgrading to higher tiers. Yet, there is still a lot to gain here for Duolingo in the years ahead.
Third, Duolingo’s expansion into adjacent subjects, such as literacy, math, and chess, demonstrates how its gamified and engaging learning model can scale beyond languages. If these experiments prove successful, the company could evolve into a multi-disciplinary education platform, broadening its addressable market and strengthening its brand as more than just a language app. Over time, this could open the door to deeper integration into school curricula, partnerships with ministries of education, and even credentialing in subjects beyond English.
Finally, international expansion offers a long runway. While Duolingo already derives nearly 60% of its revenue outside the United States, deeper penetration in Asia, Latin America, and Africa could accelerate growth. These regions combine strong demand for English proficiency with limited access to affordable alternatives, making Duolingo’s model highly compelling.
Ultimately, the company still has numerous levers to pull to drive growth.
Market share + growth
Duolingo’s market position is defined by a paradox: it is small in the context of the overall language-learning industry, yet dominant in the digital space. With roughly 117 million active users, the company reaches only about 5% of the two billion people learning languages globally, and Morgan Stanley estimates its direct-to-consumer market share at just 0.5%. But within the app-based ecosystem, Duolingo is the clear leader, accounting for around 60% of all activity and nearly half of total revenue in 2023.
In other words, while Duolingo’s global penetration remains modest, it has already established itself as the undisputed leader in the app-based language learning ecosystem.
Its dominance stems from a freemium model that removes barriers to adoption, combined with a decade of refinements in gamification and behavioral design that make language learning a habitual practice. This has created a user funnel and engagement moat that rivals like Babbel or Busuu, which rely on early paywalls, cannot match. The numbers tell the story: as the graph below illustrates, the company has far outgrown its peers. Even as it became the industry leader in 2021, it has continued to outgrow all its peers in 2022 and 2023, despite its larger size.
In other words, Duolingo not only maintained its leadership in recent years but continues to expand its lead!
Meanwhile, the growth runway is substantial. The global language-learning market is projected to grow at a 20% CAGR through 2032, with digital education expanding at a closer to 27% CAGR through 2034. Duolingo sits directly at the intersection of these secular shifts, benefiting from rising global demand for English proficiency, increasing smartphone penetration, and the digitalization of education.
Meanwhile, the company is not simply maintaining share—it is gaining it. As a result, Duolingo looks best positioned to benefit from industry growth and outpace it as its market share grows.
All in all, given everything addressed so far, Duolingo maintaining growth at a 20-25% CAGR through 2030 seems highly likely, with room for upside as it expands its platform into new categories.
For reference, Morgan Stanley projects Duolingo could achieve a 26% CAGR over the next five years, driven by under-penetrated market potential and effective monetization via new AI-powered subscription tiers like Max.
That seems like a fair base-case estimate.
Does Duolingo have a moat?
Yes, Duolingo has a moat, though it is built less on hard barriers and more on brand, scale, and user behavior.
Its strongest advantage is brand equity: Duolingo is the most recognizable name in digital language learning, with the Duo owl now a cultural icon. This visibility drives organic adoption at a scale competitors can’t match, while the Duolingo English Test adds credibility by being accepted at thousands of universities.
Scale and data further reinforce this position. Hundreds of millions of learners complete billions of exercises, feeding Duolingo’s adaptive algorithms and creating a product that gets smarter and stickier over time. Gamification and habit formation deepen this moat, turning language learning into a daily routine where streaks and progress goals make switching to rivals less likely, even if costs are low.
You see, once a learner builds a streak, the psychological cost of switching to another platform becomes higher, even if switching costs are technically low. This behavioral moat is a subtle but powerful driver of retention and conversion into subscriptions. The freemium model then widens the funnel globally, particularly in emerging markets, where paid-first competitors struggle to gain traction.
That said, the moat has limitations. Switching costs remain low, meaning users could switch to a clearly superior product if one emerged. Additionally, critics argue that Duolingo does not help learners achieve fluency, which raises the risk that some users will “outgrow” the platform. And because much of its advantage rests on brand visibility and virality, a disruptive new entrant could erode its dominance if Duolingo stops innovating.
For investors, Duolingo’s moat is real, but it is execution dependent. As long as it continues to innovate in AI, gamification, and new areas, its brand, scale, and behavioral stickiness should enable it to widen its lead in digital education.
Now that we have formed a clear picture of Duolingo, its operations, growth drivers, market position, and moat, I would usually delve into its financials. However, this time, I first want to discuss the one massive bear argument against any Duolingo investment thesis: AI disruption.
Could AI disrupt Duolingo?
Indeed, there is one significant bearish argument to address here, and that is the risk of AI disruption, which has been a substantial drag on its share price in recent months as AI developments accelerate.
And I must admit, these fears aren’t without merit.
In my view, there is one real existential AI threat to Duolingo: real-time AI translation. Tools like Google Translate, GPT-powered voice assistants, or Apple’s newly announced AirPods with live translation could reduce the need for fluency, especially among hobbyists and travelers. For casual learners, if communication across languages becomes seamless, the motivation to invest time in language study could diminish. That would shrink the very funnel of free users that underpins Duolingo’s monetization strategy.
This is a significant threat, one that is rapidly materializing, as evidenced by Apple’s recent announcement.
In relation to this, it’s important to note that language learning is not evenly distributed in terms of motivation. A significant share of learners pursue it for functional or practical reasons, such as navigating a trip abroad, conversing with colleagues, or meeting an entry-level proficiency requirement. These are precisely the use cases most vulnerable to substitution by AI-powered translation. While more motivated learners—those driven by culture, relationships, or career opportunities—are less likely to abandon language study, Duolingo’s monetization model depends heavily on volume. Even a modest decline in demand from casual learners could have a significant impact on growth if the free user funnel narrows over time.
Yet, while these risks are real, AI is also a powerful tailwind if Duolingo executes well. The company is already embedding generative AI into its products, most notably through Duolingo Max, which enables learners to engage in role-playing conversations and receive real-time explanations. These features make lessons more immersive and justify higher pricing tiers, raising ARPU.
AI also slashes content-creation costs: Duolingo has reported generating over 100 new language courses in months using AI tools, something that would have previously taken years. Combined with its unique data advantage—billions of learner interactions feeding its adaptive algorithms—Duolingo is better positioned than any rival to deploy AI effectively at scale.
From an investor's perspective, AI is best seen as a double-edged sword. On one hand, it allows Duolingo to enhance personalization, cut costs, and expand monetization. On the other hand, it introduces a structural threat that could undermine the company’s entire funnel. Real-time translation, if it becomes seamless and ubiquitous, has the potential to erode the casual learner base that Duolingo depends on for scale, advertising, and subscription conversion.
That makes execution critical: if Duolingo successfully positions itself as the best way to combine AI with human learning, it can harness the technology as a tailwind. But if real-time translation adoption accelerates and Duolingo fails to adapt quickly enough, the disruption could prove existential rather than incremental.
As a result, I agree with the broader concerns. This AI risk warrants a significant discount and considerable investor caution.
On that note, let’s now delve deeper into the company’s recent performance and financials.
Financial & Performance Review
Duolingo announced its most recent financial results on August 6th, impressing investors with strong growth in users and engagement, as well as revenue, bookings, and cash flows, all of which exceeded expectations from both Wall Street and management.
Furthermore, the company reported record profitability and accelerating growth in both revenue and bookings, which collectively enabled management to raise its FY25 outlook once again, with new learning modules, such as Chess, Math, and Music, driving very strong growth.
In other words, Duolingo is firing on all cylinders, beating growth expectations and delivering rapidly improving profitability.
Delving into the numbers, Duolingo reported total Q2 revenue of $252 million, up 41% YoY, which is an improvement in growth compared to Q1 and excellent growth, considering this laps 41% growth in the same quarter one year earlier. Clearly, Duolingo is seeing no weakness at all.
This was driven by a 46% growth in subscriptions to $211 million, accounting for the vast majority of revenue. Once again, Duolingo is facing no weakness, as growth has remained fairly stable over the last 2 years in the 45% to 53% range, which is excellent.
Management saw strength across all tiers, with Super growing ahead of expectations, driven by strong conversion. Also, Max, its newest and highest-end tier, has seen excellent traction, driven by new features like Video Call.
Meanwhile, other revenue, consisting mainly of ad revenue and English proficiency test revenue, accelerated nicely to 20% in Q2, marking the best growth since late 2023, driven by excellent growth in ad revenue.
According to management, this excellent growth across both categories is driven by feature improvements and effective marketing, which encourages learners to return.
Most importantly, Duolingo’s new Chess course has seen remarkable traction so far, growing faster than any other subject, including language learning. The course has already surpassed one million DAUs as of the end of Q2, despite being available only on iOS and in English, which is an exceptional achievement. Expect this to remain a great growth driver as availability grows and the course itself improves.
The Chess course has the potential to bring in a completely new audience and deepen engagement.
Additionally, management also saw a good engagement boost with its move to “Energy” from “Hearts” to manage usage. To quote management, “Unlike Hearts, which penalize mistakes, Energy is usage-based and rewards success—a carrot, not a stick. Each exercise uses a unit of energy, regardless of whether the answer is right or wrong, but learners get back energy when they get multiple answers correct in a row. This creates a more motivating and gamified experience, especially for new users who tend to make more mistakes.”
Since its iOS rollout, it has resulted in greater engagement, for example, leading to growth in DAUs, median time spent learning, and subscriber conversion. I am pleased to see that Duolingo continues to find ways to improve its business with small feature updates, which result in notable underlying improvements.
These same improvements also led to strong growth in Q2 bookings of 41% YoY to $268 million, which is remarkably strong and a good indicator of what’s to come. In fact, this was the best growth in over a year.
To provide some background on the reported numbers for revenue and bookings, revenue is what Duolingo can recognize immediately under accounting rules (GAAP). For subscriptions, this means recognizing revenue ratably over the subscription period as the service is delivered. For example, if a user purchases a one-year Duolingo Super subscription, Duolingo does not record the full payment as revenue on day one; instead, it spreads it out monthly over the year.
Total bookings, on the other hand, represent the total value of all products and services sold during the period, regardless of when the revenue is recognized. In practice:
For subscriptions, bookings capture the full cash value of subscriptions sold in the quarter (e.g., full-year prepaid plans).
For advertising and the Duolingo English Test, bookings and revenue are recognized at the same time (since those services are delivered immediately).
So bookings are a measure of sales demand and cash inflow, while revenue is a measure of accounting recognition of services provided. As a result, bookings serve as a leading indicator of future revenue, which is crucial for Duolingo, given that a growing share of its business is subscription-based. Today’s rising bookings are expected to translate into recognized revenue over the coming quarters.
Therefore, I am delighted to see bookings growth accelerate from prior quarters, showing healthy demand and conversion.
Moving to user growth, Duolingo performed strongly once again. DAUs grew 40% YoY to 48 million. Yes, management had guided for growth of 40-45%, so this sits at the low end of this, but growing daily active users by 40% on top of 59% in the same quarter last year is still remarkable.
This slowdown we are seeing below is inevitable, considering the growth in size. I would actually argue it’s holding up much better than expected.
Meanwhile, MAU growth was solid as well, growing 24% YoY to 128 million. Once again, we can see a considerable deceleration of growth, as Duolingo is increasingly facing the rule of large numbers.
However, it is positive to see DAU outgrowing MAU, indicating engagement is still growing.
Finally, paid subscribers grew 37% YoY to 11 million in Q2, also decelerating but holding up quite well, as paid penetration improved by 40 bps to 9%. Paid penetration has been steadily growing for years, as conversion rates continue to improve. Additionally, average revenue per paid subscriber (ARPU) was up 6% YoY, primarily driven by more subscribers shifting to higher-priced tiers. This combination of healthy subscriber and ARPU growth led to the excellent reported revenue growth.
Clearly, Duolingo’s growth engine is still firing on all cylinders.
Moving to the bottom-line results, Duolingo delivered a gross profit of $183 million, up 39% YoY, even as the gross margin fell 100 bps YoY, driven by higher AI costs associated with the expansion of Max. However, the decline was smaller than the 300 bps anticipated. Additionally, the gross margin improved 130 basis points from Q1 to 72.4%, driven by lower-than-expected AI costs and strength in the ads business.
Notably, the company still achieved operating leverage in both GAAP and non-GAAP metrics, driving an excellent EBITDA performance. Duolingo delivered an adj. EBITDA of $79 million, as the EBITDA margin improved by 420 bps YoY to 31.2%, which is a new all-time high.
As shown below, Duolingo has steadily increased its EBITDA margin as operating leverage has grown, with the margin almost doubling over the last two years. This looks excellent, and with room for further upside.
Moving further down the line, Duolingo reported a net income of $44 million, up 84% YoY and translating into an EPS of $0.91, which beat consensus estimates by a very impressive $0.33.
Also, Q2 FCF was $86 million, up 61% YoY, as the FCF margin improved 410 bps YoY to 34.2%, making the company a very unique Rule of 70 business. As shown below, Duolingo has consistently delivered a very healthy FCF and margin, driven by its low-cost software and subscription-based model.
Finally, in terms of financial health, Duolingo also looks excellent, ending the quarter with $1.1 billion in cash and equivalents and just $97 million in debt, leaving it with ample liquidity and practically no debt. Especially considering its excellent and consistent FCF generation, Duolingo is looking brilliant in terms of financial health.
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Outlook & Valuation
Thanks to its excellent Q2, delivering record profitability and strong top-line growth, Duolingo raised its FY25 guidance. Management now guides for:
FY25 bookings growth of 30-33% to $1.02 billion at the midpoint (Q3 growth of 27-29%)
FY25 revenue to grow by 35.2% - 36.2% to $1.02 billion at the midpoint (Q3 growth of 35%)
FY25 gross margin to decline roughly 100 bps YoY.
FY25 EBITDA of between $288 million and $296 million.
FY25 EBITDA margin to be between 28.5% and 29%, reflecting a 310 bps expansion YoY at the midpoint and up 80 bps from the midpoint.
This is excellent guidance from management, still pointing to sustained top-line growth and expanding margins.
Looking ahead to 2026 and beyond, we already touched on its growth drivers, ability to keep gaining market share, and estimated/likely growth rate through 2030, concluding that, looking at all the facts and data at hand, I believe Duolingo should be able to maintain a growth rate of 20-25% through 2030.
As I mentioned earlier, the company holds a demanding market position in a rapidly growing market, and it continues to gain market share, far outgrowing all of its closest peers. The secular drivers behind its industry, in addition to its size, operational advantage, and expansion opportunities into other courses, fuel my belief that it will continue to outpace the underlying market by a healthy margin. This leads me to believe the company will continue to deliver excellent growth into the next decade.
The only caveat to this expectation is the potential disruption from AI, particularly real-time AI-driven translation features, which are becoming increasingly present. Yet, the real impact is still tough to estimate. For now, I assume this creates a mild headwind for the industry and Duolingo from 2027 onward, considering the technology is currently nowhere near achieving broad-based adoption. Therefore, I don’t expect any impact from these technologies until at least late 2027.
As for my projections, I am now assuming revenue will come in at the high end of management’s guided range, which is based on healthy industry dynamics and management’s historical guidance caution. Additionally, EPS growth is expected to be strong, driven by healthy margin expansion.
Looking beyond the current year, I expect a strong performance in 2026, as traction is expected to remain healthy, thanks to the strong adoption of its new Math and Chess courses. I now project 27% revenue growth, which is expected to moderate significantly in 2027 and 2028, amid potential AI-related headwinds and the rule of large numbers taking its toll. Amid the slowdown in growth in 2027 and 2028, I also expect margin expansion to moderate, especially as Duolingo may need to increase R&D spending to counter the impact of AI headwinds.
All these assumptions are reflected in the projections below.
That then brings us to valuation, and as you might expect, a dominant and rapidly growing (Rule of 70) business like Duolingo doesn’t trade cheaply, not even in the face of severe AI disruption.
Yes, amid these AI concerns, shares have retreated roughly 40% from their May 2025 all-time high; however, they are still up 17% over the last year, currently trading at a share price of $326. Furthermore, even at these levels, Duolingo shares still trade at the following valuation multiples:
95x this year’s earnings and 65x next year’s earnings.
A growth-adjusted PEG of 2.9x
55x this year’s EBITDA
I think these multiples reflect what Duolingo is – a high-growth, high-margin, and high-potential company, with a potentially long runway of superior growth ahead. And usually, taking the long-term view and acknowledging that Duolingo has limited traditional competition in a high-growth market, positioning it for sustained high growth well into the 2030s, I wouldn’t mind paying such a premium, especially considering this is a high-margin, high cash flow business with excellent financial health.
The company really checks most boxes.
Yet, the emergence of real-time AI-driven translation features warrants a considerable discount, as its growth outlook is no longer as straightforward in the face of potential disruption. Yes, diversification into Math and Chess courses helps Duolingo offset these headwinds somewhat, but its primary product is still language learning, and the risk of disruption is considerable. On that, I agree with Wall Street, and I am not sure shares have been discounted enough to make this one an appealing investment.
For reference, assuming a 2027 exit multiple of 60x and a PEG of just above 2x, which is the absolute most I would be willing to pay for what will likely be high-teens revenue growth and low-twenties EPS growth, I calculate an end-of-2027 target price of $383. From a current share price of $326, this represents potential annual returns of roughly 6%.
At these levels, I simply don’t see enough room for upside when balancing its growth potential and AI threat.
So, where would I buy? Personally, below $260, ideally below $250, the risk-reward here is much more compelling, offering good downside protection and plenty of upside. At those levels, Duolingo is a compelling long-term investment.
Yet, for now, I remain on the sidelines, leaving Duolingo on my watchlist, waiting for some additional weakness.
A fantastic business, but not worth the current price tag.
Rating: Hold - Accumulate below $260
2027 Target Price: $383
Implied CAGR from the current price: ~6%
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I generally agree with your analysis. I wrote a deep dive a few months ago when the stock traded at $270, and I believed the shares were still trading on the expensive side. Your target of accumulating below $250-260 seems reasonable,
Thank you very much for the detailed analysis of Duolingo, it truly brings a lot of clarity. I had a question: typically, in most analyses of tech companies, non-GAAP EPS is used for valuation purposes, as it more accurately reflects operational profitability. Could you comment on the reason for using GAAP EPS instead of non-GAAP EPS in this case?