Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Operating activities:
Net Income (Loss)	$ (65,373)	$ (28,720)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	2,431	2,266
Stock-based compensation	6,980	7,053
Change in fair value of SAFEs (including related party amounts of $2,911 and $573, respectively)	3,597	707
Accretion of discounts and amortization of premiums on investments, net	(2,342)	(456)
Changes in operating assets and liabilities:
Accounts receivable (including related party amounts of $569 and $(569), respectively)	1,034	(510)
Other receivables (including related party amounts of $607 and $(607), respectively)	578	(724)
Prepaid expenses and other current assets	(1,965)	516
Other long-term assets	125	139
Accounts payable (including related party amounts of $76 and $51, respectively)	519	(408)
Accrued expenses (including related party amounts of $(1,447) and $(971), respectively)	(659)	(912)
Operating lease right-of-use asset and lease liabilities, net	43	145
Deferred revenue		(26,526)
Net cash used in operating activities	(55,032)	(47,430)
Investing activities:
Purchases of property and equipment	(642)	(3,258)
Purchases of short-term investments	(176,171)	(49,517)
Maturities of short-term investments	56,350	26,800
Net cash used in investing activities	(120,463)	(25,975)
Financing activities:
Proceeds from issuance of common stock, net of commissions	166,507
Proceeds from issuance of simple agreements for future equity (including related party amounts of $0 and $19,742, respectively)		24,393
Proceeds from exercise of stock options	51	10
Payments on finance leases	(149)
Cash paid in connection with IPO offering costs	(4,183)
Repurchase of restricted stock		(12)
Net cash provided by financing activities	162,226	24,391
Net decrease in cash, cash equivalents and restricted cash	(13,269)	(49,014)
Cash, cash equivalents and restricted cash at beginning of period	53,762	102,776
Cash, cash equivalents and restricted cash at end of period	40,493	53,762
Reconciliation of cash, cash equivalents and restricted cash to the balance sheet:
Cash and cash equivalents	40,235	53,504
Restricted cash	258	258
Total cash, cash equivalents and restricted cash	40,493	53,762
Supplemental disclosures of cash flow information:
Income taxes	0	83
Supplemental disclosures of noncash activities:
Property and equipment purchases in accounts payable and accrued liabilities	57	18
Conversion of SAFE notes to common stock	28,697
Conversion of preferred stock to common stock	216,413
Non-cash additions to financing leases	$ 241