# Duolingo Stock After Q3 2026 Earnings: It Stopped Selling Its AI Tier — InvestMoat Research

_Duolingo's daily users grew 29% in Q3 2026 and the stock jumped 26%, but it also stopped selling Max after its AI calls fell under a cent, so I think AI no longer earns it a premium and the habit is the moat, with pricing power still unproven._

_Published: November 5, 2026 · Last reviewed: November 5, 2026 · Canonical page: https://www.investmoat.com/research/duolingo-q3-and-the-ai-tier-it-stopped-selling_
_Tags: Platforms, AI Disruption, Pricing Power, Earnings_
_Covers: DUOL, GOOGL, SPOT, RBLX_

## Summary

Duolingo reported Q3 2026 on November 3 with daily active users up 29%, and the stock rose 26% the next day. On the same call it said it has essentially stopped selling Max, its AI tier, after Video Call fell from about $0.30 per call to well under a cent on open models. Video Call moves into the regular paid plan, where it helps conversion, but it no longer holds a higher price. My read is that the daily habit is the moat. Monthly users grew 13% and subscribers 14%, so the paid share of monthly users barely moved, and management has ruled out adding friction to the free product. I'd be wrong in one direction if bookings growth reaches 20% for two straight quarters by Q3 2027, and in the other if daily user growth falls below 15% for two straight quarters by then.

## What would prove this wrong

If Duolingo reports total bookings growth of 20% or more for two consecutive quarters by Q3 2027 (due around November 2027), the habit can charge and I've undersold it, and if it reports daily user growth below 15% for two consecutive quarters by then, the habit is weaker than I say.

_Status as of November 5, 2026: **holding**._

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Daily active users, Q3 2026: +29% YoY · Paid subscribers, Q3 2026: +14% YoY · Cost per AI video call: < $0.01 · DUOL price: (live)

Duolingo has essentially stopped selling Max, its AI tier, and I think that says more about the moat than the 29% jump in daily users that sent the stock [up 26% on November 4](https://www.fool.com/investing/2026/11/04/why-duolingo-stock-skyrocketed-today/). Max was small, single digits of subscribers and bookings, so the money barely moves. What matters is why it went: the AI calls that justified a higher price now cost under a cent. **My read is that AI no longer earns Duolingo a premium, the daily habit is the moat, and the habit hasn't yet shown it can charge more.** One [headline](https://www.fool.com/investing/2026/11/04/duolingo-s-user-surge-starts-paying-off-rapid-earnings-reaction/) said the user surge starts paying off. I don't think Q3 shows that yet.

## The AI calls got cheap enough to move down a tier

Duolingo has a free tier, a paid plan called Super, and Max, a pricier plan built around AI conversation. In August CEO Luis von Ahn said [Duolingo might sunset Max](https://www.fool.com/earnings/call-transcripts/2026/08/12/duolingo-duol-q2-2026-earnings-call-transcript/). On the November 3 call CFO Gillian Munson said: "We have essentially stopped selling Max to new users." Individual Max subscribers move to Super Family, the group plan, at a similar price.

**What changed around Max and Video Call, with Google's free rival for comparison.**

| Item | Before | Now |
| --- | --- | --- |
| Video Call inference cost | About $0.30 per call at launch | Well under $0.01 per call, mainly on open-source or open-weight models |
| Who gets Video Call | Max subscribers | All paid subscribers by year end, about 10 times as many users |
| Max for new users | On sale | Essentially stopped |
| Max's size | Premium tier | Single-digit share of paid subscribers and of bookings |
| Gross margin | May outlook: roughly 69% by year end | Q3 72.9% against a 71.0% guide; Q4 expected about a point lower |
| Google Translate Practice | Launched August 2025 | Free beta at launch for a few language pairs; current status not confirmed here |

_Figures as of November 2026. Source: [Duolingo Q3 2026 earnings call transcript](https://www.investing.com/news/transcripts/earnings-call-transcript-duolingo-q3-2026-revenue-beats-as-users-accelerate-93CH-4996909); [Duolingo Q1 2026 earnings call transcript](https://www.fool.com/earnings/call-transcripts/2026/05/04/duolingo-duol-q1-2026-earnings-transcript/); [Duolingo Q2 2026 shareholder letter](https://www.sec.gov/Archives/edgar/data/0001562088/000162828026053299/q2fy26duolingo6-30x26share.htm); [Duolingo Form 10-Q for the quarter ended September 30, 2026](https://www.sec.gov/Archives/edgar/data/0001562088/000162828026069692/duol-20260930.htm); [Google Translate can translate conversations in real time and help you practice a new language](https://bgr.com/1950516/google-translate-conversations-real-time-practice-mode)._

The cost drop is what matters for the moat. Von Ahn said it came mainly from moving to open models, and any competitor can use those too. Google launched free practice inside Translate back in August 2025. So a speaking partner can't hold a higher price for long.

AI still does a job here. Von Ahn said moving Video Call into Super tested as good for revenue, and that people who try tailored calls during a free trial are more likely to subscribe. So it helps sell the plan at Super's price. Nothing on this call shows it earning a price above that. The savings are real too, but the same price cut reaches every rival.

## Users are growing about twice as fast as payers

Bookings, the money customers committed in the quarter, did beat. The August guide for Q3 was about 9% and the result was 12%, with subscription bookings up 16%.

**Daily users have pulled away from both subscribers and bookings. The Q4 bookings point is company guidance. Management expects Q4 daily user growth similar to Q3, after expecting about 20% for all of 2026 back in February.**

| Period | Daily active users, YoY | Paid subscribers, YoY | Total bookings, YoY |
| --- | --- | --- | --- |
| Q1 2026 | 21% | 21% | 14% |
| Q2 2026 | 23% | 17% | 8% |
| Q3 2026 | 29% | 14% | 12% |
| Q4 2026 guide | — | — | 13% |

_Figures as of Q3 2026. Source: [Duolingo Q1 2026 shareholder letter](https://www.sec.gov/Archives/edgar/data/0001562088/000162828026029790/q1fy26duolingo3-31x26share.htm); [Duolingo Q2 2026 shareholder letter](https://www.sec.gov/Archives/edgar/data/0001562088/000162828026053299/q2fy26duolingo6-30x26share.htm); [Duolingo Q2 2026 earnings call transcript](https://www.fool.com/earnings/call-transcripts/2026/08/12/duolingo-duol-q2-2026-earnings-call-transcript/); [Duolingo Q4 2025 earnings call transcript](https://www.fool.com/earnings/call-transcripts/2026/05/04/duolingo-duol-q4-2025-earnings-transcript/); [Duolingo Q3 2026 earnings call transcript](https://www.investing.com/news/transcripts/earnings-call-transcript-duolingo-q3-2026-revenue-beats-as-users-accelerate-93CH-4996909); [Duolingo Is Up 11% After Hours as Its User Growth Speeds Up Again](https://247wallst.com/investing/2026/11/04/duolingo-is-up-11-after-hours-as-its-user-growth-speeds-up-again/)._

**Q3 2026 against a year earlier. The share and per-user rows are my calculations from the reported figures. The Q3 2026 shareholder letter would not load for me, so these come from reports of it.**

| Metric | Q3 2025 | Q3 2026 |
| --- | --- | --- |
| Daily active users | 50.5M | 64.9M |
| Monthly active users | 135.3M | 153.1M |
| Daily users as a share of monthly | ~37% | ~42% |
| Paid subscribers | 11.5M | 13.1M |
| Paid share of monthly users | ~8.5% | ~8.6% |
| Total bookings | $281.9M | $316.1M |
| Quarterly bookings per daily user | ~$5.58 | ~$4.87 |
| Adjusted EBITDA margin | 29.5% | 25.5% |
| Operating expense growth | n/a | +24%, with an $11.4M bonus accrual |

_Figures as of Q3 2026. Source: [Duolingo Form 10-Q for the quarter ended September 30, 2026](https://www.sec.gov/Archives/edgar/data/0001562088/000162828026069692/duol-20260930.htm); [Why Duolingo Stock Skyrocketed After Q3 2026 Earnings Explained](https://www.indmoney.com/blog/us-stocks/duolingo-stock-rally-q3-earnings-duol-stock); [Duolingo's User Surge Starts Paying Off: Rapid Earnings Reaction](https://www.fool.com/investing/2026/11/04/duolingo-s-user-surge-starts-paying-off-rapid-earnings-reaction/); [Duolingo Is Up 11% After Hours as Its User Growth Speeds Up Again](https://247wallst.com/investing/2026/11/04/duolingo-is-up-11-after-hours-as-its-user-growth-speeds-up-again/); [Duolingo stock soars on strong user growth, monetization plans](https://finance.yahoo.com/markets/stocks/article/duolingo-stock-soars-over-30-on-strong-user-growth-monetization-plans-155035578.html); [Why Duolingo Stock Skyrocketed Today](https://www.fool.com/investing/2026/11/04/why-duolingo-stock-skyrocketed-today/)._

The monthly rows are the ones I'd look at. Monthly users grew 13% and subscribers 14%, so the share of monthly users who pay barely moved. What jumped is how often people open the app, and von Ahn says the vast majority of the improvement comes from retention. That's a strong habit. It also means much of the 29% is existing users coming back more often, rather than a new crowd waiting to convert.

The 29% itself deserves some care. Yahoo reports that the [$11.4 million bonus](https://finance.yahoo.com/markets/stocks/article/duolingo-stock-soars-over-30-on-strong-user-growth-monetization-plans-155035578.html) pays only if Q4 daily user growth reaches 25%, so the company is paid to push this number, and that's part of why margin fell.

## What Duolingo can still charge for

Duolingo spent 2026 making the free product easier, and in February von Ahn said ["we are prioritizing growing the size of the pie"](https://www.fool.com/earnings/call-transcripts/2026/05/04/duolingo-duol-q4-2025-earnings-transcript/). He also said that whenever Duolingo removed friction, meaning the limits that push a free user to pay, daily users grew. My read is that the reverse holds too, and he seems to agree. On this call he described "a strict guardrail inside the company to not degrade the free user experience anymore."

So the 2027 push has to come from elsewhere: longer free trials, avatar purchases, family plans, a direct ad sales team and Chess, which has 10 million daily users and is, in his words, "completely under-monetized." Ads were flattish in Q3, though Munson said they exited the quarter growing. The cheaper ad-supported tier hasn't worked yet: "our A/B tests for Lite have just not been home runs." No 2027 numbers come until February.

**Live pillar ratings for Duolingo, its free rival and two other apps people open daily. My view is that Max was Duolingo's route to a real bundle.**

| Ticker | Learned Interfaces | Proprietary Data | Bundling | Network Effects |
| --- | --- | --- | --- | --- |
| [DUOL](https://www.investmoat.com/stocks/duolingo) | intact | intact | weakened | weakened |
| [GOOGL](https://www.investmoat.com/stocks/google) | strong | strong | strong | strong |
| [SPOT](https://www.investmoat.com/stocks/spot) | intact | intact | intact | intact |
| [RBLX](https://www.investmoat.com/stocks/rblx) | strong | intact | weakened | strong |

Duolingo still holds things back from free users, including Video Call, so it does have something to sell. The guardrail only stops it making the free product worse. Spotify is the contrast I'd draw: its free tier comes with ads and limits, and that's a lever Duolingo has just said it won't pull further. Roblox is the honest counter-example. Its network is free to join and it earns from optional spending, which is close to where avatars and Chess could take Duolingo. But Roblox players spend in front of other players, and learning a language is mostly done alone.

## Why the rally could be right, and why it could be too generous

The bull would say I'm grading a harvest in the planting season. Von Ahn says users monetize over time, sometimes over years. Subscription bookings already outgrew total bookings in Q3, Q4 is guided higher, and Munson says subscriber growth probably bottoms in a couple of quarters. More engaged users should be easier to sell to, whatever the share looks like today.

The bull also has an answer on AI. Von Ahn says nobody has as much data on people learning, and words spoken per user have roughly doubled in about a year. He expects to match a one-on-one human tutor over the next few years. Live inference on free users should cost only single-digit millions of dollars next year. If that data makes Duolingo's AI clearly better than a rival's at the same cost, AI could become part of the moat, and I'd be wrong to treat it as just a cost.

The opposite worry is that I'm too kind about the habit. Daily user growth had help: the Q2 letter names a one-time event to revive lost streaks, and von Ahn says game partnerships such as Brawl Stars did bring users, though he says they retain well and most of the growth comes from the app. He also says the product is "not as good as a one-on-one human tutor" today. If a free AI tutor on every phone gets close first, the streak might be all that holds people. I'd want to see the 29% hold after the bonus is paid in early 2027.

> **INSIGHT** — A test for any app adding AI: if the feature's cost falls because of open models, it can help sell the plan, but it won't hold a higher price. Ask what the app can still charge for.

## The February outlook and two lines

This isn't a price call. The scorecard below carries the live valuation, and the scenarios on [the Duolingo page](/stocks/duolingo) should be re-struck when 2027 guidance arrives in February. [Management's goal is 100 million daily users in 2028](https://www.fool.com/earnings/call-transcripts/2026/08/12/duolingo-duol-q2-2026-earnings-call-transcript/), so I expect growth to slow from here without that meaning much.

So I've set the lines apart. If total bookings growth reaches 20% for two straight quarters by Q3 2027, the habit can charge and the rally was right about more than users. If daily user growth falls below 15% for two straight quarters, the habit is weaker than I think. Anything in between means the habit is holding and pricing is still unproven.

**InvestMoat's live scores for the same four names.**

| Ticker | Name | Moat | Growth | Valuation | Composite | Note |
| --- | --- | --- | --- | --- | --- | --- |
| [DUOL](https://www.investmoat.com/stocks/duolingo) | Duolingo | 47 | 67 | 62 | 55 | Daily users +29%, paid subscribers +14% (Q3 2026) |
| [GOOGL](https://www.investmoat.com/stocks/google) | Alphabet Inc. | 83 | 76 | 79 | 82 | Launched free language practice in Translate in 2025 |
| [SPOT](https://www.investmoat.com/stocks/spot) | Spotify Technology | 62 | 78 | 63 | 67 | Free tier carries ads and limits |
| [RBLX](https://www.investmoat.com/stocks/rblx) | Roblox Corporation | 73 | 67 | 59 | 65 | Free network, earns from optional spending |

_Valuation and composite above use each asset's static valuation score; the live site recomputes them against the current market price._

## Sources

1. [Duolingo Q3 2026 earnings call transcript](https://www.investing.com/news/transcripts/earnings-call-transcript-duolingo-q3-2026-revenue-beats-as-users-accelerate-93CH-4996909) — Investing.com, November 3, 2026 (transcript)
2. [Duolingo Form 10-Q for the quarter ended September 30, 2026](https://www.sec.gov/Archives/edgar/data/0001562088/000162828026069692/duol-20260930.htm) — Duolingo via SEC EDGAR, September 30, 2026 (filing)
3. [Duolingo Q2 2026 shareholder letter](https://www.sec.gov/Archives/edgar/data/0001562088/000162828026053299/q2fy26duolingo6-30x26share.htm) — Duolingo via SEC EDGAR, August 5, 2026 (filing)
4. [Duolingo Q1 2026 shareholder letter](https://www.sec.gov/Archives/edgar/data/0001562088/000162828026029790/q1fy26duolingo3-31x26share.htm) — Duolingo via SEC EDGAR, May 4, 2026 (filing)
5. [Duolingo Q2 2026 earnings call transcript](https://www.fool.com/earnings/call-transcripts/2026/08/12/duolingo-duol-q2-2026-earnings-call-transcript/) — Motley Fool, August 5, 2026 (transcript)
6. [Duolingo Q1 2026 earnings call transcript](https://www.fool.com/earnings/call-transcripts/2026/05/04/duolingo-duol-q1-2026-earnings-transcript/) — Motley Fool, May 4, 2026 (transcript)
7. [Duolingo Q4 2025 earnings call transcript](https://www.fool.com/earnings/call-transcripts/2026/05/04/duolingo-duol-q4-2025-earnings-transcript/) — Motley Fool, February 26, 2026 (transcript)
8. [Why Duolingo Stock Skyrocketed After Q3 2026 Earnings Explained](https://www.indmoney.com/blog/us-stocks/duolingo-stock-rally-q3-earnings-duol-stock) — INDmoney, November 5, 2026 (third-party)
9. [Duolingo's User Surge Starts Paying Off: Rapid Earnings Reaction](https://www.fool.com/investing/2026/11/04/duolingo-s-user-surge-starts-paying-off-rapid-earnings-reaction/) — Motley Fool, November 4, 2026 (third-party)
10. [Why Duolingo Stock Skyrocketed Today](https://www.fool.com/investing/2026/11/04/why-duolingo-stock-skyrocketed-today/) — Motley Fool, November 4, 2026 (third-party)
11. [Duolingo Is Up 11% After Hours as Its User Growth Speeds Up Again](https://247wallst.com/investing/2026/11/04/duolingo-is-up-11-after-hours-as-its-user-growth-speeds-up-again/) — 24/7 Wall St., November 4, 2026 (third-party)
12. [Duolingo stock soars on strong user growth, monetization plans](https://finance.yahoo.com/markets/stocks/article/duolingo-stock-soars-over-30-on-strong-user-growth-monetization-plans-155035578.html) — Yahoo Finance, November 4, 2026 (third-party)
13. [Google Translate can translate conversations in real time and help you practice a new language](https://bgr.com/1950516/google-translate-conversations-real-time-practice-mode) — BGR, August 26, 2025 (third-party)

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Scores are computed deterministically from each asset's data file: composite = Moat^0.40 × Growth^0.30 × Valuation^0.30, scaled to 0–100.

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