CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY AND CONVERTIBLE PREFERRED STOCK - USD ($) $ in Thousands		Total	Convertible Preferred Stock (Series A, B, C and C-1)		Common Stock Including Class A, Class B and Treasury Stock		Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss	Series C		Series C Convertible Preferred Stock (Series A, B, C and C-1)		Series C Common Stock Including Class A, Class B and Treasury Stock	Series C Additional Paid-in Capital	Series C-1	Series C-1 Convertible Preferred Stock (Series A, B, C and C-1)		Series C-1 Common Stock Including Class A, Class B and Treasury Stock	Series C-1 Additional Paid-in Capital	Series A Convertible Preferred Stock (Series A, B, C and C-1)	Series A Common Stock Including Class A, Class B and Treasury Stock	Series A Additional Paid-in Capital	Series B	Series B Convertible Preferred Stock (Series A, B, C and C-1)	Series B Common Stock Including Class A, Class B and Treasury Stock	Series B Additional Paid-in Capital	Class A common stock	Class A common stock Common Stock Including Class A, Class B and Treasury Stock		Class A common stock Additional Paid-in Capital
Beginning balance (in shares) at Dec. 31, 2022	[1]		81,504,797		44,682,579
Beginning balance at Dec. 31, 2022		$ 551,280	$ 1,041,127		$ (5,357)		$ 10,716	$ (495,156)	$ (50)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock (in shares)	[1]				359,502
Issuance of stock		723					723
Convertible preferred stock paid-in-kind dividend		(26,368)	$ 26,368				(20,400)	(5,968)
Stock-based compensation		8,961					8,961
Foreign currency translation adjustments		37							37
Net loss		(175,563)						(175,563)
Ending balance (in shares) at Dec. 31, 2023	[1]		81,504,797		45,042,081
Ending balance at Dec. 31, 2023		$ 385,438	$ 1,067,495		$ (5,357)		0	(676,687)	(13)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock (in shares)		612,592			612,592	[1]				18,060,773	[1]	18,060,773	[1]				25,412,440	[1]
Issuance of stock		$ 1,652					1,652			$ 313,117		$ 313,117				$ 781,900	$ 781,900
Convertible preferred stock paid-in-kind dividend		(30,701)	$ 30,701				(13,757)	(16,944)
Repurchase of common stock (in shares)	[1]				(112,551)
Repurchase of common stock		(530)			$ (530)
Stock-based compensation		12,105					12,105
Foreign currency translation adjustments		(194)							(194)
Net loss		(275,645)						(275,645)
Ending balance (in shares) at Dec. 31, 2024			99,565,570	[1]	45,542,122	[1]																						0
Ending balance at Dec. 31, 2024		$ 435,943	$ 1,411,313		$ (5,887)		0	(969,276)	(207)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock (in shares)		1,548,168			1,548,168	[1]				8,384,459		8,384,459	[1]			25,412,440													34,330,882	[1]
Issuance of stock		$ 5,942					5,942			$ 206,241		$ 206,241																$ 1,092,647	$ 3		$ 1,092,644
Convertible preferred stock paid-in-kind dividend		(217,353)	$ 217,353				(24,935)	(192,418)		$ (63,039)						$ (99,139)								$ (55,175)
Conversion of convertible preferred stock to Class A common stock (in shares)	[1],[2]											(26,445,232)		29,791,614			(25,412,440)		28,628,152		(56,088,617)	56,088,617			(25,416,180)	33,298,476
Conversion of convertible preferred stock to Class A common stock	[2]											$ (585,969)		$ 4	$ 585,965		$ (881,041)		$ 4	$ 881,037	$ (624,733)	$ 7	$ 624,726		$ (525,064)	$ 4	$ 525,060
Cancellation of treasury stock					$ 5,888			(5,888)
Stock-based compensation		34,761					34,761
Warrant expense		6,073					6,073
Foreign currency translation adjustments		197							197
Net loss		(745,868)						(745,868)
Ending balance (in shares) at Dec. 31, 2025			0	[1]	229,228,031	[1]																						220,726,547
Ending balance at Dec. 31, 2025		$ 1,817,836	$ 0		$ 23		$ 3,731,273	$ (1,913,450)	$ (10)

[1] Share amounts have been adjusted to reflect the 6.3811681-for-1 forward stock split that became effective on November 3, 2025 in connection with the initial public offering (see Note 1).

[2] the Company’s convertible preferred stock converted into Class A common stock (see Note 8). Prior to the closing of the Company's IPO, the Company's Series A, Series A-1, Series A-2, Series A-3, Series B, Series C and Series C-1 convertible preferred stock had carrying values of $367,886, $34,989, $115,375, $121,755, $410,925, $474,394 and $455,867, respectively.