CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flows from operating activities:
Net loss	$ (299,512)	$ (162,696)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense	44,306	22,223
Depreciation and amortization expense	435	250
Amortization of debt issuance costs and discount	1,127	987
Changes in operating assets and liabilities:
Trade receivables, net	(6,899)	0
Prepaid expenses and other current assets	(11,813)	(582)
Inventory	(7,072)	0
Accounts payable	(19,047)	(6,297)
Accrued expense	25,631	(9,700)
Accrued interest, net of interest received on maturity of investments	(11,258)	(3,562)
Net cash used in operating activities	(284,102)	(159,377)
Cash flows from investing activities:
Purchases of marketable securities	(364,988)	(290,696)
Sales and maturities of marketable securities	346,431	100,204
Acquisition of intangible asset	(5,000)	0
Purchases of property and equipment, net of disposals	(488)	(104)
Net cash used in investing activities	(24,045)	(190,596)
Cash flows from financing activities:
Proceeds from issuance of loan payable	0	50,000
Payment of debt issuance costs	0	(288)
Net cash provided by financing activities	707,829	95,620
Net increase (decrease) in cash, cash equivalents, and restricted cash	399,682	(254,353)
Cash, cash equivalents, and restricted cash at beginning of period	99,915	331,549
Cash, cash equivalents, and restricted cash at end of period	499,597	77,196
Nonrelated Party
Cash flows from financing activities:
Proceeds from issuance or sale of equity	397,510	21,754
Related Party
Cash flows from financing activities:
Proceeds from issuance or sale of equity	$ 310,319	$ 24,154