v3.26.3
REVENUE
 9 Months Ended
Sep. 30, 2026
Revenue from Contract with Customer [Abstract]  
REVENUE REVENUE
Disaggregation of Revenue
In accordance with Accounting Standards Codification ("ASC") 606, Revenue from Contracts with Customers, the Company disaggregates revenue from contracts with customers into revenue streams, which most closely depict how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors.
Three Months Ended September 30,
Nine Months Ended September 30,
(In thousands)2026202520262025
Subscription
$269,985 $229,491 $778,928 $631,156 
Advertising
20,820 21,019 62,486 59,504 
Duolingo English Test
9,854 9,649 31,280 31,723 
IAPs
6,880 11,096 23,328 30,928 
Other
1,468 458 3,406 1,410 
Total revenues
$309,007 $271,713 $899,428 $754,721 

Three service providers, Apple, Google, and Stripe processed 59.6%, 23.3%, and 12.1%, and 59.8%, 23.1%, and 11.8%, respectively, of total revenues for the three and nine months ended September 30, 2026, respectively. Two service providers, Apple and Google, processed 62.2% and 23.3%, and three service providers, Apple, Google, and Stripe processed 61.6%, 23.5% and 10.1%, respectively, of total revenues for the three and nine months ended September 30, 2025, respectively.
Deferred revenue consists of payments received in advance of revenue recognition, and is mostly related to time-based subscriptions, which will be recognized into revenue over the course of the upcoming year (recognized over 12 months or less). Additionally, the Duolingo English Test has deferred revenue related to tests that have been purchased, but will not be recognized until the tests have been proctored. Changes in deferred revenues were as follows:
Nine Months Ended September 30,
(In thousands)20262025
Beginning balance—January 1$496,205 $372,884 
Amount from beginning balance recognized into revenue(453,778)(339,992)
Deferral of revenue844,942 754,123 
Amount recognized from current-period deferrals(373,802)(345,288)
Ending balance—September 30$513,567 $441,728