NET LOSS PER SHARE - Summary of Potentially Dilutive Shares Excluded from Earnings Per Share (Details) - shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Weighted-average potentially dilutive shares excluded from the calculation of diluted earnings per share (in shares)	13,965,269	15,266,964	49,532,246
Shares of common stock issuable upon conversion of redeemable convertible preferred stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Weighted-average potentially dilutive shares excluded from the calculation of diluted earnings per share (in shares)	0	0	33,431,158
RSUs, PSUs, and RSAs subject to future vesting
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Weighted-average potentially dilutive shares excluded from the calculation of diluted earnings per share (in shares)	8,489,902	8,189,247	6,155,387
Shares issuable pursuant to the ESPP
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Weighted-average potentially dilutive shares excluded from the calculation of diluted earnings per share (in shares)	495,554	627,698	326,819
Shares of common stock issuable from stock options
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Weighted-average potentially dilutive shares excluded from the calculation of diluted earnings per share (in shares)	4,979,813	6,450,019	9,618,882