STOCKHOLDERS' EQUITY AND CONVERTIBLE PREFERRED STOCK - Preferred Stock Prior to IPO (Details) - shares	Dec. 31, 2025	Nov. 05, 2025	Nov. 03, 2025	Dec. 31, 2024
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)	50,000,000		141,365,814	109,223,404
Preferred stock, shares issued (in shares)	0		133,362,469	99,565,570
Preferred stock, shares outstanding (in shares)	0	0	133,362,469	99,565,570
Series A
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)			32,039,539	32,039,539
Preferred stock, shares issued (in shares)			32,039,539	32,039,539
Preferred stock, shares outstanding (in shares)			32,039,539	32,039,539
Series A-1
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)			3,064,920	3,064,920
Preferred stock, shares issued (in shares)			3,064,920	3,064,920
Preferred stock, shares outstanding (in shares)			3,064,920	3,064,920
Series A-2
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)			10,110,916	10,110,916
Preferred stock, shares issued (in shares)			10,110,916	10,110,916
Preferred stock, shares outstanding (in shares)			10,110,916	10,110,916
Series A-3
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)			10,873,242	10,873,242
Preferred stock, shares issued (in shares)			10,873,242	10,873,242
Preferred stock, shares outstanding (in shares)			10,873,242	10,873,242
Series B
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)	0		30,925,502	30,925,502
Preferred stock, shares issued (in shares)	0		25,416,180	25,416,180
Preferred stock, shares outstanding (in shares)	0		25,416,180	25,416,180
Series C
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)	0		26,479,034	22,209,285
Preferred stock, shares issued (in shares)	0		26,445,232	18,060,773
Preferred stock, shares outstanding (in shares)	0		26,445,232	18,060,773
Series C-1
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)	0		27,872,661	0
Preferred stock, shares issued (in shares)	0		25,412,440	0
Preferred stock, shares outstanding (in shares)	0		25,412,440	0