Consolidated Statements of Operations - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Revenue		$ 2,225,052	$ 1,919,181	$ 923,885
Cost and expenses:
Cost of revenue	[1]	547,658	496,870	239,898
Developer exchange fees		623,855	538,321	328,740
Infrastructure and trust & safety		689,081	456,498	264,226
Research and development		873,477	533,207	201,433
General and administrative		297,317	303,020	97,341
Sales and marketing		117,448	86,363	58,384
Total cost and expenses		3,148,836	2,414,279	1,190,022
Loss from operations		(923,784)	(495,098)	(266,137)
Interest income		38,842	92	1,822
Interest expense		(39,903)	(6,998)	0
Other income/(expense), net		(5,744)	(1,796)	(32)
Loss before income taxes		(930,589)	(503,800)	(264,347)
Provision for/(benefit from) income taxes		3,552	(320)	(6,656)
Consolidated net loss		(934,141)	(503,480)	(257,691)
Net loss attributable to the noncontrolling interest		(9,775)	(11,829)	(4,437)
Net loss attributable to common stockholders		$ (924,366)	$ (491,651)	$ (253,254)
Net loss per share attributable to common stockholders, basic (in dollars per share)		$ (1.55)	$ (0.97)	$ (1.39)
Net loss per share attributable to common stockholders, diluted (in dollars per share)		$ (1.55)	$ (0.97)	$ (1.39)
Weighted-average shares used in computing net loss per share attributable to common stockholders—basic (in shares)		595,559,000	505,858,000	182,108,000
Weighted-average shares used in computing net loss per share attributable to common stockholders—diluted (in shares)		595,559,000	505,858,000	182,108,000

[1] Depreciation of servers and infrastructure equipment included in infrastructure and trust & safety.