Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net loss	$ (732,673)	$ (177,870)	$ (84,883)
Adjustments to reconcile net loss to net cash used in operating activities
Share-based compensation	122,596	12,763	0
Accretion of asset retirement obligations	0	35	19
Bad debt expense	42	0	0
Depreciation and amortization	9,450	7,683	5,565
Gain (loss) on disposal of property and equipment	(19)	134	873
Non-cash research and development expense	0	32,325	0
Change in fair value of related party convertible loan	0	5,556	0
Change in fair value of warrants liability	326,900	(1,816)	0
Gain on loan extinguishment	(4,183)	0	0
Changes in operating assets and liabilities:
Accounts receivable	(497)	(1,004)	(116)
Prepaid expenses and other current assets	(10,209)	274	(1,539)
Other assets	(1,777)	(682)	(941)
Accounts payable	(181)	4,196	139
Amounts due to related parties	0	(205)	143
Amounts due to joint development partners	6,039	1,355	0
Accrued expenses and other current liabilities	25,486	13,112	5,012
Other liabilities	(7)	296	(605)
Net cash used in operating activities	(259,033)	(103,848)	(76,333)
Cash flows from investing activities:
Advances to related parties	0	0	(8)
Repayments from advances to related parties	0	8	0
Purchases of property and equipment	(13,321)	(4,303)	(10,328)
Purchases of intangible assets	(416)	(306)	(161)
Proceeds from disposal of property and equipment	100	189	62
Net cash used in investing activities	(13,637)	(4,412)	(10,435)
Cash flows from financing activities:
Proceeds from issuance of redeemable convertible preferred stock	54,693	291,646	52,299
Proceeds from exercise of warrants for redeemable convertible preferred stock	183,007	2,500	0
Proceeds from issuance of related party convertible loan	0	50,000	0
Proceeds from issuance of warrants	0	11,943	0
Proceeds from early exercised stock options	1,163	0	0
Proceeds from issuance of common stock upon initial public offering, net of offering costs	1,030,965	0	0
Proceeds from issuance of common stock related to private placement	35,000	0	0
Proceeds from related party loan	0	5,000	0
Proceeds from loans	0	4,134	0
Return of guarantee deposit on related party loan	3,715	0	0
Principal payments on related party loan	(4,398)	(7,900)	(146)
Payment of third-party costs in connection with initial public offering	(3,591)	0	0
Principal payments on capital lease obligations	(783)	(713)	(323)
Principal payments on loans	(620)	(115)	0
Net cash provided by financing activities	1,299,151	356,495	51,830
Effect of exchange rate changes on cash, cash equivalents and restricted cash	260	6	234
Net increase (decrease) in cash, cash equivalents and restricted cash	1,026,741	248,241	(34,704)
Cash, cash equivalents and restricted cash at beginning of period	312,351	64,110	98,814
Cash, cash equivalents and restricted cash at end of period	1,339,092	312,351	64,110
Reconciliation of cash, cash equivalents, and restricted cash to the consolidated balance sheets:
Cash and cash equivalents	1,337,586	310,815	63,610
Restricted cash included in prepaid expenses and other current assets	1,506	1,536	500
Total cash, cash equivalents and restricted cash	1,339,092	312,351	64,110
Supplemental disclosure of cash flow information:
Cash paid for interest	786	1,177	496
Supplemental schedule of non-cash investing and financing activities:
Acquisitions of property and equipment included in liabilities	10,542	2,765	266
Purchase of property and equipment under capital lease	0	0	5,608
Exchange of Series A-2 redeemable convertible preferred stock for common stock	0	0	60,000
Accretion of redeemable convertible preferred stock	4,135	20,959	201
Reclassification of Series D-1 redeemable convertible preferred share warrants from equity to liabilities	0	394	0
Cashless exercise of share options for common stock	0	975	0
Conversion of related party convertible loan to Series E-1 redeemable convertible preferred shares	0	55,556	0
Vesting of early exercised stock options	84	0	0
Exercise of liability-classified warrants	369,352	0	0
Conversion of redeemable convertible preferred stock into common stock upon initial public offering	$ 1,282,916	$ 0	$ 0