Convertible Preferred Stock - Schedule of Outstanding Convertible Preferred Stock (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Temporary Equity [Line Items]
Shares authorized (in shares)	86,864,781
Shares issued (in shares)	73,021,449
Shares outstanding (in shares)	73,021,449	73,021,449	73,021,449
Aggregate liquidation preference	$ 1,847,993,000
Net carrying value	$ 1,853,492,000	$ 1,853,492,000	$ 1,853,492,000
Series A
Temporary Equity [Line Items]
Shares authorized (in shares)	7,500,000
Shares issued (in shares)	7,500,000
Shares outstanding (in shares)	7,500,000
Original issue price per share (in dollars per share)	$ 2.67
Aggregate liquidation preference	$ 35,000,000
Net carrying value	$ 21,670,000
Series A-1
Temporary Equity [Line Items]
Shares authorized (in shares)	114,746
Shares issued (in shares)	114,746
Shares outstanding (in shares)	114,746
Original issue price per share (in dollars per share)	$ 5.93
Aggregate liquidation preference	$ 680,000
Net carrying value	$ 680,000
Series B
Temporary Equity [Line Items]
Shares authorized (in shares)	17,564,937
Shares issued (in shares)	17,564,937
Shares outstanding (in shares)	17,564,937
Original issue price per share (in dollars per share)	$ 6.26
Aggregate liquidation preference	$ 110,011,000
Net carrying value	$ 130,567,000
Series C
Temporary Equity [Line Items]
Shares authorized (in shares)	10,073,589
Shares issued (in shares)	10,073,589
Shares outstanding (in shares)	10,073,589
Original issue price per share (in dollars per share)	$ 15.77
Aggregate liquidation preference	$ 158,900,000
Net carrying value	$ 158,048,000
Series D
Temporary Equity [Line Items]
Shares authorized (in shares)	13,833,617
Shares issued (in shares)	10,290,493
Shares outstanding (in shares)	10,290,493
Original issue price per share (in dollars per share)	$ 21.69
Aggregate liquidation preference	$ 223,163,000
Net carrying value	$ 223,092,000
Series D-1
Temporary Equity [Line Items]
Shares authorized (in shares)	13,833,617
Shares issued (in shares)	3,543,124
Shares outstanding (in shares)	3,543,124
Original issue price per share (in dollars per share)	$ 21.69
Aggregate liquidation preference	$ 76,837,000
Net carrying value	$ 76,687,000
Series E
Temporary Equity [Line Items]
Shares authorized (in shares)	12,195,638
Shares issued (in shares)	12,195,638
Shares outstanding (in shares)	12,195,638
Original issue price per share (in dollars per share)	$ 42.47
Aggregate liquidation preference	$ 518,002,000
Net carrying value	$ 517,577,000
Series F
Temporary Equity [Line Items]
Shares authorized (in shares)	6,634,905
Shares issued (in shares)	6,634,905
Shares outstanding (in shares)	6,634,905
Original issue price per share (in dollars per share)	$ 61.79
Aggregate liquidation preference	$ 410,000,000
Net carrying value	$ 409,862,000
Series F-1
Temporary Equity [Line Items]
Shares authorized (in shares)	5,113,732
Shares issued (in shares)	5,104,017
Shares outstanding (in shares)	5,104,017
Original issue price per share (in dollars per share)	$ 61.79
Aggregate liquidation preference	$ 315,400,000
Net carrying value	$ 315,309,000