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REVENUE (Tables)

12 Months Ended

Dec. 31, 2023

Revenue from Contract with Customer [Abstract]

Schedule of Revenue Sources and Streams

									Year Ended December 31,
(In thousands)															2023						2022						2021
Revenues:
Subscription															$	404,684					$	273,507					$	180,698
Advertising															49,858						44,731						38,501
Duolingo English Test															41,212						32,718						24,658
In-App Purchases															34,673						17,914						6,836
Other (1)															682						625						79
Total revenues															$	531,109					$	369,495					$	250,772

________________

(1) Other revenue is mainly comprised of revenue from Duo’s Taquería.

Schedule of Revenue by Geographic Areas

Information regarding geography of revenues is based upon the location where the users are located or, in the case of the Duolingo English Test, where the tests are taken:

			Year Ended December 31,
			2023						2022						2021
United States			$	238,759					$	168,320					$	109,163
United Kingdom			42,118						31,539						25,163
Rest of World			250,232						169,636						116,446
Total			$	531,109					$	369,495					$	250,772

Schedule of Deferred Revenues

Changes in deferred revenues were as follows:

			Year Ended December 31,
(In thousands)			2023						2022
Beginning balance—January 1			$	157,550					$	98,267
Amount from beginning balance recognized into revenue			(157,550)						(98,267)
Recognition of deferred revenue			(287,429)						(199,130)
Deferral of revenue			536,621						356,680
Ending balance—December 31			$	249,192					$	157,550

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- Definition

Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability.

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-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
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- Definition

Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

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-Topic 606
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Tabular disclosure of revenue from external customers by geographic areas attributed to the entity's country of domicile and to foreign countries from which the entity derives revenue.

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