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Fair Value Measurement - Schedule of Change in Fair Value of Derivative Warrant Liabilities (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Convertible Note |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning balance | $ (51,112) | $ 0
Issuances |  | (40,150)
Conversion of Convertible Note to common stock | 8,132 |
(Loss) gain recognized in other expense, net on the consolidated statement of operations and comprehensive loss | 42,980 | (10,962)
Ending balance | 0 | (51,112)
PIPE Warrant |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning balance | 0 |
Issuances | (24,950) |
Reclassification of PIPE warrant to equity | 16,150 |
(Loss) gain recognized in other expense, net on the consolidated statement of operations and comprehensive loss | 8,800 |
Ending balance | 0 | 0
FPA Put Option |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning balance | (30,015) | (37,523)
Partial settlement of the Brookfield Loan |  | 30,000
(Loss) gain recognized in other expense, net on the consolidated statement of operations and comprehensive loss |  | (22,492)
Ending balance | (30,015) | (30,015)
Fixed Maturity Consideration |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning balance | (4,123) | (7,228)
Partial settlement of the Brookfield Loan |  | 4,123
(Loss) gain recognized in other expense, net on the consolidated statement of operations and comprehensive loss |  | (1,018)
Ending balance | (4,123) | (4,123)
Brookfield SAFE |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning balance | (13,223) | (25,150)
Extinguishment of the Brookfield SAFE | 13,274 |
(Loss) gain recognized in other expense, net on the consolidated statement of operations and comprehensive loss | (51) | 11,927
Ending balance | 0 | (13,223)
Brookfield Loan |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning balance | 0 |
Issuances | (19,490) |
Partial settlement of the Brookfield Loan | 12,500 |
Extinguishment of the Brookfield Loan | 12,300 |
Issuance of the Amended Brookfield Loan | (12,300) |
(Loss) gain recognized in other expense, net on the consolidated statement of operations and comprehensive loss | (3,910) |
Ending balance | (10,900) | 0
IPO Private Placement Warrants |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning balance | (1,432) | (3,914)
(Loss) gain recognized in other expense, net on the consolidated statement of operations and comprehensive loss | 1,422 | 2,482
Ending balance | $ (10) | $ (1,432)

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- Definition Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition Amount of settlements of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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