Condensed Consolidated Statements of Operations (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Income Statement [Abstract]
Revenue	$ 265,196	$ 191,476	$ 700,755	$ 537,202
Costs and operating expenses:
Cost of revenue	93,587	74,489	249,515	212,206
Research and development expense	89,957	87,306	265,927	254,210
Sales and marketing expense	127,375	97,880	351,279	260,172
General and administrative expense	53,266	49,129	150,477	128,243
Total costs and operating expenses	364,185	308,804	1,017,198	854,831
Loss from operations	(98,989)	(117,328)	(316,443)	(317,629)
Interest income	7,391	13,257	24,063	42,038
Interest expense	(943)	(646)	(2,717)	(1,936)
Other income (expense), net	(48)	(3,007)	7,778	(47,272)
Loss before provision for income taxes	(92,589)	(107,724)	(287,319)	(324,799)
Provision for income taxes	136	30	464	568
Net loss	$ (92,725)	$ (107,754)	$ (287,783)	$ (325,367)
Net loss per share, basic (in usd per share)	$ (0.74)	$ (0.88)	$ (2.32)	$ (2.66)
Net loss per share, diluted (in usd per share)	$ (0.74)	$ (0.88)	$ (2.32)	$ (2.66)
Weighted-average shares used in computing net loss per share, basic (in shares)	124,807	123,051	124,268	122,406
Weighted-average shares used in computing net loss per share, diluted (in shares)	124,807	123,051	124,268	122,406

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

Name:	us-gaap_CostOfGoodsAndServicesSold
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Total costs of sales and operating expenses for the period.