SUBSEQUENT EVENTS (Details) - USD ($) $ / shares in Units, $ in Thousands		2 Months Ended	3 Months Ended		9 Months Ended
	Nov. 05, 2025	Dec. 04, 2025	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Oct. 15, 2025
Subsequent Event [Line Items]
Issuance of stock				$ 261		$ 1,231
Loss on issuance of convertible preferred stock			$ 355,551	$ 0	$ 355,551	$ 0
Series C-1 Preferred Stock
Subsequent Event [Line Items]
Issuance of stock			$ 724,278		$ 724,278
Subsequent Event
Subsequent Event [Line Items]
Number of total shares outstanding, percentage							5.00%
Sale of stock, price per share (in dollars per share)	$ 34.00
Subsequent Event | 2025 Plan
Subsequent Event [Line Items]
Number of shares authorized (in shares)	36,207,812
Subsequent Event | 2025 Plan | Restricted Stock Units (RSUs)
Subsequent Event [Line Items]
Awards granted (in shares)	1,640,769
Subsequent Event | Employee Stock Purchase Plan 2025
Subsequent Event [Line Items]
Number of shares authorized (in shares)							2,413,854
Subsequent Event | IPO
Subsequent Event [Line Items]
Net proceeds received on transaction	$ 1,103,327
Subsequent Event | Board Member
Subsequent Event [Line Items]
Loss on issuance of convertible preferred stock		$ 24,067
Subsequent Event | Series C-1 Preferred Stock | Board Member
Subsequent Event [Line Items]
Issuance of common stock (in shares)		1,866,989
Issuance of stock		$ 33,491
Subsequent Event | Class A common stock | IPO
Subsequent Event [Line Items]
Sale of stock, number of shares issued (in shares)	34,330,882