Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Statement of Comprehensive Income [Abstract]
Revenue	$ 1,322,509	$ 1,151,708	$ 950,010
Cost of revenue	270,832	205,612	174,462
Gross profit	1,051,677	946,096	775,548
Operating expenses
Sales and marketing	580,680	552,019	494,908
Research and development	362,373	312,987	300,571
General and administrative	232,967	217,513	195,746
Total operating expenses	1,176,020	1,082,519	991,225
Loss from operations	(124,343)	(136,423)	(215,677)
Interest income	20,941	23,694	19,779
Interest expense	(1,153)	(1,899)	(1,957)
Accretion income, net	8,265	13,583	9,794
Other income (expense), net	2,309	(3,136)	(360)
Loss before provision for income taxes	(93,981)	(104,181)	(188,421)
Provision for income taxes	6,802	1,775	1,273
Net loss	$ (100,783)	$ (105,956)	$ (189,694)
Net loss per share attributable to common stockholders, basic (in dollars per share)	$ (0.67)	$ (0.72)	$ (1.34)
Net loss per share attributable to common stockholders, diluted (in dollars per share)	$ (0.67)	$ (0.72)	$ (1.34)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic (in shares)	150,247,067	147,444,772	141,961,467
Weighted-average shares used in computing net loss per share attributable to common stockholders, diluted (in shares)	150,247,067	147,444,772	141,961,467
Other comprehensive (loss) income
Foreign currency translation adjustment, net of tax	$ 1,422	$ (1,787)	$ 437
Unrealized income (loss) on available-for-sale debt and marketable securities, net of tax	45	425	504
Total other comprehensive income (loss)	1,467	(1,362)	941
Comprehensive loss	$ (99,316)	$ (107,318)	$ (188,753)