Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Cash flows from operating activities
Net income (loss)	$ (10,099)	$ (41,109)	$ (585,165)	$ (101,975)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	3,770	3,321	7,513	6,659
Non-cash operating lease cost	1,335	3,415	2,588	6,684
Amortization of premium (accretion of discount) on marketable securities, net	(11,362)	(6,150)	(19,491)	(11,282)
Stock-based compensation expense	64,266	10,103	641,774	22,583
Other adjustments	141	150	626	166
Changes in operating assets and liabilities:
Accounts receivable	(24,793)	(8,833)	5,194	24,913
Prepaid expenses and other assets	(6,270)	1,840	(20,182)	828
Operating lease right-of-use assets and liabilities	(780)	(2,211)	(1,310)	(3,082)
Accounts payable	18,220	(6,323)	16,042	383
Accrued expenses and other liabilities	(6,043)	(8,256)	12,860	4,145
Net cash provided by (used in) operating activities	28,385	(54,053)	60,449	(49,978)
Cash flows from investing activities
Purchases of property and equipment	(1,202)	(830)	(4,053)	(1,186)
Purchases of marketable securities	(861,827)	(351,366)	(997,512)	(614,212)
Maturities of marketable securities	343,404	319,512	596,059	634,877
Proceeds from sale of marketable securities	0	749	0	37,538
Other investing activities	(12)	42	(27)	112
Net cash provided by (used in) investing activities	(519,637)	(31,893)	(405,533)	57,129
Cash flows from financing activities
Proceeds from issuance of Class A common stock in initial public offering, net of underwriting discounts and commissions	0	0	600,022	0
Proceeds from exercise of employee stock options	1,843	830	24,932	1,791
Taxes paid related to net share settlement of restricted stock units	(7,569)	0	(202,306)	(4,229)
Payments of initial public offering costs	(3,585)	(496)	(6,338)	(858)
Other financing activities	0	0	(4,450)	0
Net cash provided by (used in) financing activities	(9,311)	334	411,860	(3,296)
Net increase (decrease) in cash, cash equivalents, and restricted cash	(500,563)	(85,612)	66,776	3,855
Cash, cash equivalents, and restricted cash at the beginning of the period	968,565	525,327	401,226	435,860
Cash, cash equivalents, and restricted cash at the end of the period	468,002	439,715	468,002	439,715
Cash and cash equivalents	467,952	439,665	467,952	439,665
Restricted cash	50	50	50	50
Total cash, cash equivalents, and restricted cash	468,002	439,715	468,002	439,715
Supplemental disclosures of cash flow information
Cash paid for income taxes	2,561	565	2,725	852
Supplemental disclosure of noncash financing and investing activities
Conversion of convertible preferred stock to common stock upon initial public offering	0	0	1,853,492	0
Reclassification of deferred offering costs to additional paid-in capital upon initial public offering	0	0	23,754	0
Operating lease right-of-use assets recognized in exchange for lease liabilities	$ 3,687	$ 0	$ 3,687	$ 12,014