Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement Of Income And Comprehensive Income [Abstract]
Revenue	$ 159,516	$ 113,938
Cost of revenue	33,332	20,359
Gross profit	126,184	93,579
Operating expenses
Sales and marketing	93,915	53,965
Research and development	60,254	34,545
General and administrative	43,152	17,927
Total operating expenses	197,321	106,437
Loss from operations	(71,137)	(12,858)
Interest expense, net	(491)	(562)
Other income (expense), net	543	(183)
Loss before provision for income taxes	(71,085)	(13,603)
Provision for income taxes	334	129
Net loss	$ (71,419)	$ (13,732)
Net loss per share attributable to common stockholders, basic and diluted	$ (0.53)	$ (0.44)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic and diluted	134,530,010	31,357,060
Total comprehensive loss
Net loss	$ (71,419)	$ (13,732)
Foreign currency translation adjustment	345	(24)
Comprehensive loss	$ (71,074)	$ (13,756)