Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Cash flows from operating activities
Net income (loss)	$ 89,297	$ (10,099)	$ 115,455	$ (585,165)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	3,934	3,770	7,897	7,513
Non-cash operating lease cost	1,514	1,335	2,982	2,588
Amortization of premium (accretion of discount) on marketable securities, net	(6,691)	(11,362)	(15,575)	(19,491)
Stock-based compensation expense	89,070	64,266	174,484	641,774
Other adjustments	97	141	(41)	626
Changes in operating assets and liabilities:
Accounts receivable	(81,116)	(24,793)	(57,757)	5,194
Prepaid expenses and other assets	(9,352)	(6,270)	(26,358)	(20,182)
Operating lease right-of-use assets and liabilities	(1,589)	(780)	(3,369)	(1,310)
Accounts payable	19,991	18,220	18,945	16,042
Accrued expenses and other liabilities	6,176	(6,043)	22,246	12,860
Net cash provided by (used in) operating activities	111,331	28,385	238,909	60,449
Cash flows from investing activities
Purchases of property and equipment	(505)	(1,202)	(1,484)	(4,053)
Purchases of marketable securities	(556,457)	(861,827)	(1,061,303)	(997,512)
Maturities of marketable securities	552,532	343,404	1,017,594	596,059
Proceeds from sale of marketable securities	0	0	12,372	0
Other investing activities	2,354	(12)	3,243	(27)
Net cash provided by (used in) investing activities	(2,076)	(519,637)	(29,578)	(405,533)
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	0	600,022
Proceeds from exercise of employee stock options	4,303	1,843	14,487	24,932
Taxes paid related to net share settlement of restricted stock units	(15,225)	(7,569)	(51,900)	(202,306)
Payments of initial public offering costs	0	(3,585)	0	(6,338)
Other financing activities	0	0	0	(4,450)
Net cash provided by (used in) financing activities	(10,922)	(9,311)	(37,413)	411,860
Net increase (decrease) in cash, cash equivalents, and restricted cash	98,333	(500,563)	171,918	66,776
Cash, cash equivalents, and restricted cash at the beginning of the period	635,727	968,565	562,142	401,226
Cash, cash equivalents, and restricted cash at the end of the period	734,060	468,002	734,060	468,002
Cash and cash equivalents	734,060	467,952	734,060	467,952
Restricted cash	0	50	0	50
Total cash, cash equivalents, and restricted cash	734,060	468,002	734,060	468,002
Supplemental disclosure of noncash financing and investing activities
Conversion of convertible preferred stock to common stock upon initial public offering	0	0	0	1,853,492
Reclassification of deferred offering costs to additional paid-in capital upon initial public offering	$ 0	$ 0	$ 0	$ 23,754