Net Loss Per Share Attributable to Common Stockholders - Computation of Basic and Diluted Net Loss Per Share Attributable to Common Stockholders (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Numerator:
Net loss attributable to common stockholders	$ (133,233)		$ (98,298)	$ (249,236)	$ (166,396)
Denominator:
Weighted-average shares outstanding	165,141,936		106,885,561	164,935,542	100,894,443
Less: Weighted-average unvested restricted shares and shares subject to repurchase	0		(1,376)	0	(3,068)
Weighted-average common shares used to compute net loss per share, basic	165,141,936		106,884,185	164,935,542	100,891,375
Weighted-average common shares used to compute net loss per share, diluted	165,141,936		106,884,185	164,935,542	100,891,375
Net loss per share attributable to common stockholders, basic	$ (0.81)	$ (0.81)	$ (0.92)	$ (1.51)	$ (1.65)
Net loss per share attributable to common stockholders, diluted	$ (0.81)	$ (0.81)	$ (0.92)	$ (1.51)	$ (1.65)