v3.25.4
EQUITY - Series of Convertible Preferred Stock (Details) - USD ($)
 12 Months Ended
Dec. 31, 2024
Sep. 30, 2025
Dec. 31, 2023
Class of Stock [Line Items]      
Number of Shares Outstanding (in shares) 111,900,495 0 104,575,110
Liquidation Preference $ 528,566,000   $ 455,274,801
Series Seed      
Class of Stock [Line Items]      
Number of Shares Outstanding (in shares) 16,100,540   16,100,540
Liquidation Preference $ 16,947,000   $ 16,947,000
Liquidation Price (in dollars per share) $ 1.05    
Dividend Rate (in dollars per share) 0.08    
Conversion Price (in dollars per share) $ 1.05    
Series A      
Class of Stock [Line Items]      
Number of Shares Outstanding (in shares) 32,860,461   32,860,461
Liquidation Preference $ 41,759,000   $ 41,759,000
Liquidation Price (in dollars per share) $ 1.27    
Dividend Rate (in dollars per share) 0.10    
Conversion Price (in dollars per share) $ 1.27    
Series B      
Class of Stock [Line Items]      
Number of Shares Outstanding (in shares) 29,448,787   29,448,787
Liquidation Preference $ 73,519,000   $ 73,519,000
Liquidation Price (in dollars per share) $ 2.50    
Dividend Rate (in dollars per share) 0.20    
Conversion Price (in dollars per share) $ 2.50    
Series C      
Class of Stock [Line Items]      
Number of Shares Outstanding (in shares) 11,238,629   11,238,629
Liquidation Preference $ 85,000,000   $ 85,000,000
Liquidation Price (in dollars per share) $ 7.56    
Dividend Rate (in dollars per share) 0.61    
Conversion Price (in dollars per share) $ 7.56    
Series C-1      
Class of Stock [Line Items]      
Number of Shares Outstanding (in shares) 504,081   504,081
Liquidation Preference $ 3,050,000   $ 3,050,000
Liquidation Price (in dollars per share) $ 6.05    
Dividend Rate (in dollars per share) 0.48    
Conversion Price (in dollars per share) $ 6.05    
Series C-2      
Class of Stock [Line Items]      
Number of Shares Outstanding (in shares) 1,983,287   1,983,287
Liquidation Preference $ 15,000,000   $ 15,000,000
Liquidation Price (in dollars per share) $ 7.56    
Dividend Rate (in dollars per share) 0.61    
Conversion Price (in dollars per share) $ 7.56    
Series D      
Class of Stock [Line Items]      
Number of Shares Outstanding (in shares) 12,439,325   12,439,325
Liquidation Preference $ 219,999,000   $ 219,999,000
Liquidation Price (in dollars per share) $ 17.69    
Dividend Rate (in dollars per share) 1.41    
Conversion Price (in dollars per share) $ 17.69    
Series E      
Class of Stock [Line Items]      
Number of Shares Outstanding (in shares) 7,325,385    
Liquidation Preference $ 73,292,000    
Liquidation Price (in dollars per share) $ 10.01    
Dividend Rate (in dollars per share) 0.80    
Conversion Price (in dollars per share) $ 10.01    
Convertible Preferred Stock      
Class of Stock [Line Items]      
Number of Shares Outstanding (in shares) 111,900,495 0 104,575,110
Liquidation Preference $ 528,566,000   $ 455,275,000