NET LOSS PER SHARE - Schedule of Reconciliation of Net Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Numerator
Net loss	$ (93,187)	$ (106,213)
Denominator
Weighted-average shares of common stock —basic (in shares)	40,640,879	34,308,435
Weighted-average shares of common stock —diluted (in shares)	40,640,879	34,308,435
Net loss per share
Basic (in dollars per share)	$ (2.29)	$ (3.10)
Diluted (in dollars per share)	$ (2.29)	$ (3.10)