Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Conversion of Class B common stock to Class A common stock	Conversion of redeemable convertible preferred stock to common stock in connection with initial public offering	Additional Paid-in Capital	Additional Paid-in Capital Conversion of redeemable convertible preferred stock to common stock in connection with initial public offering	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Class A	Class A Common Stock	Class A Common Stock Conversion of Class B common stock to Class A common stock	Class A Common Stock Conversion of redeemable convertible preferred stock to common stock in connection with initial public offering	Class A Additional Paid-in Capital	Class B	Class B Common Stock	Class B Common Stock Conversion of Class B common stock to Class A common stock	Class B Common Stock Conversion of redeemable convertible preferred stock to common stock in connection with initial public offering
Beginning balance (in shares) at Dec. 31, 2021	73,021,449
Beginning balance at Dec. 31, 2021	$ 1,853,492
Ending balance (in shares) at Dec. 31, 2022	73,021,449
Ending balance at Dec. 31, 2022	$ 1,853,492
Beginning balance (in shares) at Dec. 31, 2021									5,166,855					51,212,674
Beginning balance at Dec. 31, 2021	(286,013)			$ 181,407		$ (238)	$ (467,188)		$ 0					$ 6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options, net (in shares)									976,178					197,437
Issuance of common stock upon exercise of stock options, net	7,034			7,034
Issuance of restricted stock awards (in shares)									174,056
Issuance of common stock upon settlement of restricted stock units, net (in shares)									2,786
Issuance of common stock upon settlement of restricted stock units, net	(105)			(105)
Issuance of Class A common stock in connection with acquisitions (in shares)									62,061
Issuance of Class A common stock in connection with acquisitions	4,522			4,522
Stock-based compensation expense	55,310			55,310
Vesting of early exercised stock options	2,292			2,292
Net income (loss)	(158,550)						(158,550)
Change in other comprehensive income (loss)	(3,554)					(3,554)
Ending balance (in shares) at Dec. 31, 2022									6,381,936					51,410,111
Ending balance at Dec. 31, 2022	$ (379,064)			250,460		(3,792)	(625,738)		$ 0					$ 6
Ending balance (in shares) at Dec. 31, 2023	73,021,449
Ending balance at Dec. 31, 2023	$ 1,853,492
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options, net (in shares)									489,959					2,494,093
Issuance of common stock upon exercise of stock options, net	8,390			8,390
Issuance of common stock upon settlement of restricted stock units, net (in shares)									227,805
Issuance of common stock upon settlement of restricted stock units, net	(4,320)			(4,320)
Stock-based compensation expense	47,598			47,598
Vesting of early exercised stock options	692			692
Net income (loss)	(90,824)						(90,824)
Change in other comprehensive income (loss)	4,606					4,606
Ending balance (in shares) at Dec. 31, 2023								7,099,700	7,099,700				53,904,204	53,904,204
Ending balance at Dec. 31, 2023	$ (412,922)			302,820		814	(716,562)		$ 0					$ 6
Increase (Decrease) in Temporary Equity [Roll Forward]
Conversion of redeemable convertible preferred stock to common stock in connection with initial public offering (in shares)	(73,021,449)
Conversion of redeemable convertible preferred stock to common stock in connection with initial public offering	$ (1,853,492)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options, net (in shares)	15,018,424								10,979,938					4,038,255
Issuance of common stock upon exercise of stock options, net	$ 88,972			88,972
Issuance of common stock upon settlement of restricted stock units, net (in shares)									11,501,630					1,002,455
Issuance of common stock upon settlement of restricted stock units, net	(294,571)			(294,572)					$ 1
Conversion of stock (in shares)										71,548,247	5,104,017				(71,548,247)	67,917,432
Conversion of stock		$ 0	$ 1,853,494		$ 1,853,486					$ 8	$ 1				$ (8)	$ 7
Issuance of common stock in connection with initial public offering, net of underwriting discounts and commissions and other offering costs (in shares)									18,576,527
Issuance of common stock in connection with initial public offering, net of underwriting discounts and commissions and other offering costs	576,268			576,266					$ 2
Issuance of Class A common stock in connection with acquisitions (in shares)									191,821
Issuance of Class A common stock in connection with acquisitions	2,786											$ 2,786
Stock-based compensation expense	801,646			801,646
Vesting of early exercised stock options	142			142
Net income (loss)	(484,276)						(484,276)
Change in other comprehensive income (loss)	(790)					(790)
Ending balance (in shares) at Dec. 31, 2024								125,001,880	125,001,880				55,314,099	55,314,099
Ending balance at Dec. 31, 2024	$ 2,130,749			$ 3,331,546		$ 24	$ (1,200,838)		$ 12					$ 5