Exhibit 32.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER

PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Duolingo, Inc. (the “Company”) on Form 10-K for the fiscal year ended December 31, 2025 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), Luis von Ahn, President and Chief Executive Officer of the Company, and Gillian Munson, Chief Financial Officer of the Company, each hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:


			1.			The Report fully complies with the requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934; and


			2.			The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.


Date: February 26, 2026									/s/ Luis von Ahn
									Luis von Ahn
									President and Chief Executive Officer (Principal Executive Officer)

Date: February 26, 2026									/s/ Gillian Munson
									Gillian Munson
									Chief Financial Officer (Principal Financial Officer and Principal Accounting Officer)

Duolingo, Inc. 10-K