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Fair Value Measurements (Tables) | 12 Months Ended
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Dec. 31, 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Summary of company's assets and liabilities that were measured at fair value on a recurring basis | The table below presents the Company’s financial assets and liabilities measured at fair value on a recurring basis aggregated by the level in the fair hierarchy (in thousands):
|  |  |  |  | December 31, 2024 |  |  |  |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government treasury securities |  | $ | 30,580 |  |  | $ | — |  |  | $ | — |  |  | $ | 30,580 |
U.S. Government money market funds |  |  | 9,247 |  |  |  | — |  |  |  | — |  |  |  | 9,247 |
Mutual funds |  |  | 5,067 |  |  |  | — |  |  |  | — |  |  |  | 5,067 |
Total assets, measured at fair value |  | $ | 44,894 |  |  | $ | — |  |  | $ | — |  |  | $ | 44,894 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pay-to-Play convertible notes |  | $ | — |  |  | $ | — |  |  | $ | 15,942 |  |  | $ | 15,942 |
2023 Convertible notes |  |  | — |  |  |  | — |  |  |  | 132,687 |  |  |  | 132,687 |
Warrant liabilities |  |  | — |  |  |  | — |  |  |  | 14,711 |  |  |  | 14,711 |
Total liabilities, measured at fair value |  | $ | — |  |  | $ | — |  |  | $ | 163,340 |  |  | $ | 163,340 |
|  |  |  |  | December 31, 2023 |  |  |  |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pay-to-Play convertible notes |  | $ | — |  |  | $ | — |  |  | $ | 14,641 |  |  | $ | 14,641 |
2023 Convertible notes |  |  | — |  |  |  | — |  |  |  | 18,064 |  |  |  | 18,064 |
Warrant liabilities |  |  | — |  |  |  | — |  |  |  | 3,730 |  |  |  | 3,730 |
Total liabilities, measured at fair value |  | $ | — |  |  | $ | — |  |  | $ | 36,435 |  |  | $ | 36,435 |
Schedule of summary of changes in the fair value of financial instruments that are measured at fair value on a recurring basis | The change in the fair value of the Level 3 liabilities during the years ended December 31, 2024 and 2023 was as follows (in thousands):
|  | Pay-to-Play Convertible notes |  |  | 2023 Convertible notes |  |  | Warrant liabilities |  |  | Total |
Balance at January 1, 2023 |  | $ | 3,139 |  |  | $ | — |  |  | $ | 529 |  |  | $ | 3,668 |
Reinstatement of common stock warrants as preferred stock warrants |  |  | — |  |  |  | — |  |  |  | 61 |  |  |  | 61 |
Issuance of Pay-to-Play convertible notes and related warrants |  |  | 8,717 |  |  |  | — |  |  |  | 565 |  |  |  | 9,282 |
Common rights offering |  |  | 142 |  |  |  | — |  |  |  | — |  |  |  | 142 |
Issuance of 2023 convertible notes and related warrants |  |  | — |  |  |  | 11,175 |  |  |  | 1,125 |  |  |  | 12,300 |
Issuance of Pre-funded common stock warrants |  |  | — |  |  |  | — |  |  |  | 505 |  |  |  | 505 |
Change in estimated fair value |  |  | 2,643 |  |  |  | 6,889 |  |  |  | 945 |  |  |  | 10,477 |
Balance at December 31, 2023 |  | $ | 14,641 |  |  | $ | 18,064 |  |  | $ | 3,730 |  |  | $ | 36,435 |
Issuance of 2023 convertible note warrants and related warrants |  |  | — |  |  |  | 105,902 |  |  |  | 4,816 |  |  |  | 110,718 |
Issuance of Pre-funded common stock warrants |  |  | — |  |  |  | — |  |  |  | 464 |  |  |  | 464 |
Change in estimated fair value |  |  | 1,301 |  |  |  | 8,721 |  |  |  | 5,701 |  |  |  | 15,723 |
Balance at December 31, 2024 |  | $ | 15,942 |  |  | $ | 132,687 |  |  | $ | 14,711 |  |  | $ | 163,340 |
BURTECH ACQUISITION CORP [Member] |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Summary of company's assets and liabilities that were measured at fair value on a recurring basis |
|  |  |  |  | Quoted Prices |  |  | Significant Other |  |  | Significant Other |
|  | As of December 31, |  |  | in Active Markets |  |  | Observable Inputs |  |  | Unobservable Inputs |
|  | 2024 |  |  | (Level 1) |  |  | (Level 2) |  |  | (Level 3) |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Money Market Funds held in Trust Accounts |  | $ | 47,558,112 |  |  | $ | 47,558,112 |  |  | $ | — |  |  | $ | — |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative liability - Non-Redemption Agreement |  |  | 1,084,963 |  |  |  | — |  |  |  | — |  |  |  | 1,084,963 |
|  |  |  |  | Quoted Prices |  |  | Significant Other |  |  | Significant Other |
|  | As of December 31, |  |  | in Active Markets |  |  | Observable Inputs |  |  | Unobservable Inputs |
|  | 2023 |  |  | (Level 1) |  |  | (Level 2) |  |  | (Level 3) |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Money Market Funds held in Trust Accounts |  | $ | 71,432,177 |  |  | $ | 71,432,177 |  |  | $ | — |  |  | $ | — |
Schedule of summary of changes in the fair value of financial instruments that are measured at fair value on a recurring basis |
|  | Subscription Purchase |  |  | Non-Redemption |
|  | Agreement |  |  | Agreement |
Balance as of December 31, 2023 |  | $ | — |  |  | $ | — |
Initial Measurement on April 22, 2024 |  |  | 361,124 |  |  |  | — |
Initial Measurement on December 31, 2024 |  |  | — |  |  |  | 1,084,963 |
Change in estimated fair value |  |  | (361,124 | ) |  |  | — |
Balance as of December 31, 2024 |  | $ | — |  |  | $ | 1,084,963 |
BURTECH ACQUISITION CORP [Member] | Backstop Subscription Agreement |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Summary of key inputs used to value the company's Backstop subscription agreement / Non-Redemption Agreement |
|  | Initial |
|  | Measurement(1) |
Stock price |  | $ | 11.05 |
Risk-free rate |  |  | 5.4 | %
Weighted-average expected life (in years) |  |  | 0.5 |
Market implied likelihood of Initial Business Combination |  |  | 10.4 | %
BURTECH ACQUISITION CORP [Member] | Non-Redemption Agreement |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Summary of key inputs used to value the company's Backstop subscription agreement / Non-Redemption Agreement |
|  | Initial |
|  | Measurement(1) |
Stock price |  | $ | 15.00 |
Volatility |  |  | 118.2 | %
Risk-free rate |  |  | 4.2 | %
Debt rate |  |  | 11.8 | %
Weighted-average expected life (in years) |  |  | 0.5 |
(1) | The initial measurement date of the Non-Redemption Agreement was December 31, 2024, as such, no remeasurement was required as of December 31, 2024.

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- Definition Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 103 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-103 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability. + 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 (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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