Consolidated balance sheets - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 325,892	$ 25,833
Short-term investments	144,559	83,977
Accounts receivable - related party	613	98
Prepaid expenses and other current assets	8,096	7,088
Total current assets	479,160	116,996
Property and equipment, net	582	159
Operating lease right-of-use assets	1,783	43
Restricted cash	194
Total assets	481,719	117,198
Current liabilities:
Accounts payable	4,041	1,990
Accrued expenses and other current liabilities	5,992	4,480
Operating lease liabilities, current portion	704	45
Total current liabilities	10,737	6,515
Operating lease liabilities, net of current portion	1,130
Preferred stock tranche right liability		2,874
Total liabilities	11,867	9,389
Commitments and contingencies (Note 13)
Redeemable convertible preferred stock (Series A, B), $0.001 par value; no shares and 31,764,693 shares authorized at December 31, 2024 and December 31, 2023, respectively; no shares and 22,941,170 shares issued and outstanding at December 31, 2024 and December 31, 2023, respectively; aggregate liquidation preference of $0 and $267,718 at December 31, 2024 and December 31, 2023, respectively	0	230,935
Stockholders' equity (deficit):
Preferred stock, $0.001 par value; 10,000,000 shares and no shares authorized at December 31, 2024 and December 31, 2023, respectively; no shares issued and outstanding at December 31, 2024 and December 31, 2023
Common stock, $0.001 par value; 500,000,000 shares and 40,664,346 shares authorized at December 31, 2024 and December 31, 2023, respectively; 53,603,398 and 2,992,479 shares issued and outstanding at December 31, 2024 and December 31, 2023, respectively	53	3
Additional paid-in capital	660,604	4,824
Accumulated other comprehensive income (loss)	(25)	21
Accumulated deficit	(190,780)	(127,974)
Total stockholders' equity (deficit)	469,852	(123,126)
Total liabilities, redeemable convertible preferred stock and stockholders' equity (deficit)	$ 481,719	$ 117,198