Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Statement of Comprehensive Income [Abstract]
Revenue	$ 338,851	$ 295,885	$ 973,402	$ 849,660
Cost of revenue	68,762	54,954	201,420	148,778
Gross profit	270,089	240,931	771,982	700,882
Operating expenses
Sales and marketing	144,290	141,370	424,871	390,286
Research and development	88,049	80,791	264,560	223,698
General and administrative	52,780	55,267	164,093	157,077
Total operating expenses	285,119	277,428	853,524	771,061
Loss from operations	(15,030)	(36,497)	(81,542)	(70,179)
Interest income	4,826	5,962	15,838	17,714
Interest expense	(276)	(488)	(859)	(1,439)
Accretion income, net	2,068	3,816	6,542	10,665
Other (expense) income, net	(210)	466	2,204	(26)
Loss before provision for (benefit from) income taxes	(8,622)	(26,741)	(57,817)	(43,265)
Provision for (benefit from) income taxes	479	(353)	5,362	400
Net loss	$ (9,101)	$ (26,388)	$ (63,179)	$ (43,665)
Net loss per share attributable to common stockholders, basic (in dollars per share)	$ (0.06)	$ (0.18)	$ (0.42)	$ (0.30)
Net loss per share attributable to common stockholders, diluted (in dollars per share)	$ (0.06)	$ (0.18)	$ (0.42)	$ (0.30)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic (in shares)	150,278,399	148,134,585	149,978,697	146,854,541
Weighted-average shares used in computing net loss per share attributable to common stockholders, diluted (in shares)	150,278,399	148,134,585	149,978,697	146,854,541
Other comprehensive (loss) income
Foreign currency translation adjustment, net of tax	$ (331)	$ 509	$ 1,099	$ (64)
Unrealized gain on available-for-sale debt and marketable securities, net of tax	120	1,504	2	1,125
Total other comprehensive (loss) income	(211)	2,013	1,101	1,061
Comprehensive loss	$ (9,312)	$ (24,375)	$ (62,078)	$ (42,604)