CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Statement [Abstract]
Revenue (including $51,366 and $0 revenue from a related party for three months ended March 31, 2024 and 2023, respectively)	$ 172,740,000	$ 149,432,000
Costs and expenses
Cost of revenue	404,796,000	500,524,000
Research and development	284,627,000	229,803,000
Selling, general and administrative	213,232,000	168,770,000
Restructuring charges	0	22,496,000
Total cost and expenses	902,655,000	921,593,000
Loss from operations	(729,915,000)	(772,161,000)
Other income (expense), net
Change in fair value of common stock warrant liability	27,054,000	(40,802,000)
Change in fair value of equity securities of a related party	(19,933,000)	0
Interest income	50,631,000	40,005,000
Interest expense	(7,501,000)	(7,108,000)
Other income (expense), net	(1,007,000)	667,000
Total other income (expense), net	49,244,000	(7,238,000)
Loss before provision for income taxes	(680,671,000)	(779,399,000)
Provision for income taxes	(188,000)	(129,000)
Net loss	(680,859,000)	(779,528,000)
Accretion of redeemable convertible preferred stock (Note 8)	(3,901,000)	0
Net loss attributable to common stockholders, basic	(684,760,000)	(779,528,000)
Net loss attributable to common stockholders, diluted	$ (684,760,000)	$ (779,528,000)
Weighted average shares outstanding attributable to common stockholders, basic (in shares)	2,301,870,644	1,831,725,009
Weighted average shares outstanding attributable to common stockholders, diluted (in shares)	2,301,870,644	1,831,725,009
Net loss per share attributable to common stockholders, basic (in dollars per share)	$ (0.30)	$ (0.43)
Net loss per share attributable to common stockholders, diluted (in dollars per share)	$ (0.30)	$ (0.43)
Other comprehensive income (loss)
Net unrealized gains (losses) on investments, net of tax	$ (3,262,000)	$ 4,035,000
Foreign currency translation adjustments	(3,988,000)	0
Total other comprehensive income (loss)	(7,250,000)	4,035,000
Comprehensive loss	(688,109,000)	(775,493,000)
Accretion of redeemable convertible preferred stock (Note 8)	3,901,000	0
Comprehensive loss attributable to common stockholders	$ (692,010,000)	$ (775,493,000)