Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Accrued expenses and other current liabilities	$ 3,971	$ 2,195
Convertible promissory notes, net of discount		1,298
Convertible promissory notes	0	19,541
Derivative liabilities	0	1,042
Tranche liability	$ 0	$ 365
Redeemable convertible preferred stock, par or stated value per share	$ 0.00001	$ 0.00001
Redeemable convertible preferred stock, shares authorized	0	75,151,340
Redeemable convertible preferred stock, shares issued	0	43,151,340
Redeemable convertible preferred stock, shares outstanding	0	43,151,340
Redeemable convertible preferred stock, liquidation preference	$ 0	$ 45,151
Preferred stock, par or stated value per share	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	10,000,000	0
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.0001	$ 0.00001
Common stock, shares authorized	300,000,000	86,000,000
Common stock, shares issued	18,702,418	1,356,431
Common stock, shares outstanding	18,702,418	1,356,431
Related Party
Accrued expenses and other current liabilities	$ 37	$ 85
Convertible promissory notes	0	18,670
Derivative liabilities	0	995
Tranche liability	$ 0	$ 331