Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025
Operating activities:
Net income (loss)	$ 38,967	$ (241,911)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation and amortization	3,058	1,247
Stock-based compensation	12,403	4,891
Non-cash lease expense	1,031	904
Accretion of discount on marketable securities	(612)	0
Transaction costs allocated to common stock warrants	1,984	0
Change in fair value of second lien loans	1,153	2,154
Change in fair value of simple agreements for future equity	0	192,548
Non-cash interest expense	225	460
(Gain) loss on disposal of property and equipment, net	(221)	130
Changes in operating assets and liabilities:
Accounts receivable	367	744
Prepaid expenses and other current assets	(38)	206
Other assets	14	0
Accounts payable	345	3,078
Accrued expenses and other current liabilities	1,331	(1,790)
Operating lease liabilities	(1,021)	(898)
Other liabilities	333	77
Net cash used in operating activities	(63,619)	(36,862)
Investing activities:
Proceeds from maturities of marketable securities	70,267	0
Proceeds from sales of property and equipment	684	0
Purchases of marketable securities	(104,193)	0
Purchases of property and equipment	(9,464)	(5,236)
Net cash used in investing activities	(42,706)	(5,236)
Financing activities:
Repayment of debt	(1,052)	(6,174)
Proceeds from issuance of second lien loans	0	29,740
Proceeds from issuance of simple agreements for future equity	0	23,660
Proceeds from issuance of common stock and warrants in connection with a private placement	100,000	0
Proceeds from exercise of stock options	1,454	886
Proceeds from exercise of common stock warrants	7,156	0
Payments of offering costs	(5,210)	(2,474)
Net cash provided by financing activities	102,348	45,638
Net change in cash and cash equivalents and restricted cash	(3,977)	3,540
Cash and cash equivalents and restricted cash at beginning of period	52,211	18,159
Cash and cash equivalents and restricted cash at end of period	48,234	21,699
Components of cash and restricted cash at period end:
Cash and cash equivalents	46,750	20,249
Restricted cash included in prepaid and other current assets	500	0
Restricted cash	984	1,450
Total cash and cash equivalents and restricted cash	48,234	21,699
Supplemental disclosure of cash activities:
Cash paid for interest	1,594	1,970
Cash paid for income taxes	10	0
Supplemental disclosure of non-cash activities:
Purchases of property and equipment included in accounts payable and accrued expenses and other current liabilities	20	2,876
Operating lease right-of-use asset obtained in exchange for operating lease liability upon modification of operating lease	720	0
Operating lease right-of-use asset obtained in exchange for operating lease liability upon new operating lease	497	0
Proceeds from exercise of stock options included in prepaid and other current assets	0	50
Exchange of simple agreements for future equity for second lien loan	0	10,000
Offering costs included in accounts payable and accrued liabilities and other current liabilities	322	4,696
Deferred offering costs related to merger included in debt, current portion	0	3,922
Redeemable convertible preferred stock warrants
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Change in fair value of warrants	0	1,298
Common stock warrants
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Change in fair value of warrants	$ (122,938)	$ 0