CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED AND COMMON STOCK AND STOCKHOLDERS' EQUITY (DEFICIT) - USD ($) $ in Thousands		Total		Series A Convertible Preferred Stock		Series A-1 Convertible Preferred Stock		Series B Convertible Preferred Stock		Class B Convertible Common Stock		Common Stock		Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income
Beginning balance, temporary equity (in shares) at Dec. 31, 2022	[1]			21,977,282		2,950,548		0		2,744,184
Beginning balance, temporary equity at Dec. 31, 2022	[1]			$ 44,621		$ 9,893		$ 0		$ 5,900
Convertible Preferred and Common Stock
Issuance of Series B convertible preferred stock, net of issuance costs (in shares)	[1]							28,019,181
Issuance of Series B convertible preferred stock, net of issuance costs	[1]							$ 82,976
Ending balance, temporary equity (in shares) at Dec. 31, 2023	[1]			21,977,282		2,950,548		28,019,181		2,744,184
Ending balance, temporary equity at Dec. 31, 2023		$ 143,390		$ 44,621	[1]	$ 9,893	[1]	$ 82,976	[1]	$ 5,900	[1]
Beginning balance, common stock (in shares) at Dec. 31, 2022	[1]											1,946,988
Beginning balance at Dec. 31, 2022	[1]	(24,169)										$ 10		$ 1,098	$ (25,277)	$ 0
Stockholders' Deficit
Unrealized gain on marketable securities	[1]	6														6
Vesting of early exercised stock options (in shares)	[1]											22,372
Vesting of early exercised stock options	[1]	76												76
Share-based compensation	[1]	1,343												1,343
Net loss	[1]	$ (69,968)													(69,968)
Ending balance, common stock (in shares) at Dec. 31, 2023		1,969,360	[2]									1,969,360	[1]
Ending balance at Dec. 31, 2023	[1]	$ (92,712)										$ 10		2,517	(95,245)	6
Convertible Preferred and Common Stock
Conversion of convertible preferred stock and Class B convertible common stock to common stock as a result of the Merger and reset to par of $0.00001 (in shares)				(21,977,282)		(2,950,548)		(28,019,181)		(2,744,184)
Conversion of convertible preferred stock and Class B convertible common stock to common stock as a result of the Merger and reset to par of $0.00001				$ (44,621)		$ (9,893)		$ (82,976)		$ (5,900)
Exercise of stock options and common warrants (in shares)												801,983
Exercise of stock options and common warrants		4,038										$ 1		4,037
Ending balance, temporary equity (in shares) at Dec. 31, 2024				0		0		0		0
Ending balance, temporary equity at Dec. 31, 2024		0		$ 0		$ 0		$ 0		$ 0
Stockholders' Deficit
Conversion of convertible preferred stock and Class B convertible common stock to common stock as a result of the Merger and reset to par of $0.00001 (in shares)												11,260,672
Conversion of convertible preferred stock and Class B convertible common stock to common stock as a result of the Merger and reset to par of $0.00001		143,390										$ (10)		143,400
Issuance of common stock to Graphite stockholders as a result of the Merger (in shares)												8,320,485
Issuance of common stock to Graphite stockholders as a result of the Merger		116,145												116,145
Issuance of common stock from private placement, net (in shares)												5,138,512
Issuance of common stock from private placements, net		79,513												79,513
Reclassification of warrant liability to equity		1,918												1,918
Merger transaction costs		(5,070)												(5,070)
Unrealized gain on marketable securities		190														190
Vesting of early exercised stock options (in shares)												27,427
Vesting of early exercised stock options		76												76
Share-based compensation		6,365												6,365
Net loss		$ (49,769)													(49,769)
Ending balance, common stock (in shares) at Dec. 31, 2024		27,518,439	[2]									27,518,439
Ending balance at Dec. 31, 2024		$ 204,084										$ 1		$ 348,901	$ (145,014)	$ 196
Beginning balance, temporary equity (in shares) at Mar. 20, 2024				21,977,282		2,950,548
Stockholders' Deficit
Issuance of common stock to Graphite stockholders as a result of the Merger (in shares)		8,320,485
Issuance of common stock from private placement, net (in shares)		8,670,653
Merger transaction costs		$ (5,100)

[1] Retroactively recast for the reverse recapitalization as described in Note 3.

[2] Retroactively recast for the reverse recapitalization as described in Note 3.