Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash flows from operating activities
Net income (loss)	$ (575,066)	$ (60,866)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	3,743	3,338
Non-cash operating lease cost	1,253	3,269
Amortization of premium (accretion of discount) on marketable securities, net	(8,129)	(5,132)
Stock-based compensation	577,508	12,480
Other adjustments	485	16
Changes in operating assets and liabilities:
Accounts receivable	29,987	33,746
Prepaid expenses and other assets	(13,912)	(1,012)
Operating lease right-of-use assets and liabilities	(530)	(871)
Accounts payable	(2,178)	6,706
Accrued expenses and other liabilities	18,903	12,401
Net cash provided by (used in) operating activities	32,064	4,075
Cash flows from investing activities
Purchases of property and equipment	(2,851)	(356)
Purchases of marketable securities	(135,685)	(262,846)
Maturities of marketable securities	252,655	315,365
Proceeds from sale of marketable securities	0	36,789
Other investing activities	(15)	70
Net cash provided by (used in) investing activities	114,104	89,022
Cash flows from financing activities
Proceeds from issuance of Class A common stock in initial public offering, net of underwriting discounts and commissions	600,022	0
Proceeds from exercise of employee stock options	23,089	961
Taxes paid related to net share settlement of restricted stock units	(194,737)	(4,229)
Payments of initial public offering costs	(2,753)	(362)
Other financing activities	(4,450)	0
Net cash provided by (used in) financing activities	421,171	(3,630)
Net increase (decrease) in cash, cash equivalents, and restricted cash	567,339	89,467
Cash, cash equivalents, and restricted cash at the beginning of the period	401,226	435,860
Cash, cash equivalents, and restricted cash at the end of the period	968,565	525,327
Cash and cash equivalents	968,515	525,277
Restricted cash	50	50
Total cash, cash equivalents, and restricted cash	968,565	525,327
Supplemental disclosures of cash flow information
Cash paid for income taxes	164	287
Supplemental disclosure of noncash financing and investing activities:
Conversion of convertible preferred stock to common stock upon initial public offering	1,853,492	0
Taxes related to net share settlement of restricted stock units not yet paid	8,116	0
Reclassification of deferred offering costs to additional paid-in capital upon initial public offering	23,754	0
Operating lease right-of-use assets recognized in exchange for lease liabilities	0	12,014
Deferred offering costs not yet paid	$ 6,022	$ 1,703