INCOME TAXES - Schedule of Reconciliation of Taxes Federal Statutory Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Amount
U.S. federal statutory tax rate	$ (567,080)
State income taxes, net of federal income tax effect	259
Foreign tax effects	(1,212)
Effect of cross-border tax laws	3,035
Tax credits	(45,625)
Changes in valuation allowances	717,016
Tax effects of stock-based compensation	32,859
Derivative liability fair value adjustment	(130,926)
Other nontaxable or nondeductible items	(10,765)
Other	106
Total provision for (benefit from) income taxes	$ (2,333)	$ 1,199	$ 1,026
Percent
U.S. federal statutory tax rate	21.00%	21.00%	21.00%
State income taxes, net of federal income tax effect	0.00%
Foreign tax effects	0.00%
Effect of cross-border tax laws	(0.10%)
Tax credits	1.70%	1.20%	0.70%
Change in valuation allowance	(26.50%)	(22.70%)	(19.30%)
Tax effects of stock-based compensation	(1.20%)
Derivative liability fair value adjustment	4.80%
Other nontaxable or nondeductible items	0.40%
Other	0.00%
Effective tax rate	0.10%	0.00%	0.00%