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Convertible Notes and Demand Notes - Additional Information (Details) - USD ($)
1 Months Ended 2 Months Ended 3 Months Ended 5 Months Ended 12 Months Ended
Nov. 30, 2023
Feb. 28, 2023
Mar. 31, 2025
Jun. 30, 2024
Mar. 31, 2024
Nov. 30, 2023
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 22, 2023
Jul. 01, 2023
Feb. 01, 2023
Jan. 01, 2023
Dec. 01, 2022
Convertible Notes and Demand Notes [Line Items]                            
Change in fair value of debt instrument             $ 8,700,000              
Fair value adjustment of warrants     $ 60,345,000   $ 3,515,000   $ 5,701,000 $ 945,000            
Common stock, shares issued (in shares)     98,818,874       48,376,052 17,454,353            
Related Party                            
Convertible Notes and Demand Notes [Line Items]                            
Outstanding advances from related party     $ 2,900,000       $ 0              
BURTECH ACQUISITION CORP [Member]                            
Convertible Notes and Demand Notes [Line Items]                            
Common stock, shares issued (in shares)     87,314,968                      
Working Capital Loans Warrant [Member] | BURTECH ACQUISITION CORP [Member]                            
Convertible Notes and Demand Notes [Line Items]                            
Outstanding balance     $ 1,500,000       0              
2023 Note Purchase and Exchange Agreement [Member]                            
Convertible Notes and Demand Notes [Line Items]                            
Grant of restricted stock unit               $ 6,000,000            
Blaize Note Financing Agreement [Member] | RT Parties [Member]                            
Convertible Notes and Demand Notes [Line Items]                            
Amount of investment by separate third party group of investors to the agreement             125,000,000              
Pay-to-Play Convertible Notes [Member]                            
Convertible Notes and Demand Notes [Line Items]                            
Change in fair value of debt instrument             1,300,000 2,600,000            
Fair value adjustment of warrants               61,000,000            
Restoration of common share incremental value $ 5,200,000                          
Pay-to-Play Convertible Notes [Member] | Related Party                            
Convertible Notes and Demand Notes [Line Items]                            
Amount borrowed                         $ 3,300,000 $ 400,000
Pay-to-Play Convertible Notes [Member] | 2022 Note Purchase and Exchange Agreement [Member]                            
Convertible Notes and Demand Notes [Line Items]                            
Proceeds from issuance of debt   $ 9,300,000                        
Debt instrument, maturity date Dec. 09, 2024   Dec. 09, 2024                      
Pay-to-Play Convertible Notes [Member] | Exchange Agreement [Member]                            
Convertible Notes and Demand Notes [Line Items]                            
Proceeds from issuance of warrants $ 100,000                          
2023 Convertible Note [Member]                            
Convertible Notes and Demand Notes [Line Items]                            
Proceeds from issuance of debt           $ 12,300,000 $ 110,700,000              
Exercise price of warrants             $ 11.5              
2023 Convertible Note [Member] | 2023 Note Purchase and Exchange Agreement [Member]                            
Convertible Notes and Demand Notes [Line Items]                            
Debt instrument, interest rate during period           10.00%                
Change in fair value of debt instrument               6,900,000            
Percentage of price of the equity share                     80.00%      
Percentage of conversion price                     80.00%      
Fair value of common stock               2.6            
Restricted stock unit vesting outstanding               $ 6,000,000            
Common stock, shares issued (in shares)               6,000,000            
Debt Instrument Maturity Period           18 months                
2023 Convertible Note [Member] | Restricted Stock Units (RSUs) [Member] | 2023 Note Purchase and Exchange Agreement [Member]                            
Convertible Notes and Demand Notes [Line Items]                            
Grant of restricted stock unit               $ 6,000,000            
Demand Note [Member]                            
Convertible Notes and Demand Notes [Line Items]                            
Issue short term demand notes               5,100,000            
Short term demand note outstanding               $ 4,800,000            
Percentage demand note outstanding               (12.00%)            
Demand notes payable               $ 15,000,000            
Repayments of Notes Payable       $ 5,000,000                    
10% secured convertible notes [Member]                            
Convertible Notes and Demand Notes [Line Items]                            
Proceeds from issuance of debt             $ 110,700,000              
Debt instrument, interest rate during period             10.00%              
10% secured convertible notes [Member] | BurTech [Member]                            
Convertible Notes and Demand Notes [Line Items]                            
Proceeds from issuance of debt             $ 11,500,000              
10% secured convertible notes [Member] | Outside Individual Third Parties [Member]                            
Convertible Notes and Demand Notes [Line Items]                            
Proceeds from issuance of debt             2,400,000              
10% secured convertible notes [Member] | RT Parties [Member]                            
Convertible Notes and Demand Notes [Line Items]                            
Proceeds from issuance of debt             $ 96,800,000              
Pay to Play warrants [Member]                            
Convertible Notes and Demand Notes [Line Items]                            
Debt instrument, periodic payment, interest                 $ 5,000,000          
Pay to Play warrants [Member] | Maximum [Member]                            
Convertible Notes and Demand Notes [Line Items]                            
Debt instrument, periodic payment, interest                 5,000,000          
Pay to Play warrants [Member] | Minimum [Member]                            
Convertible Notes and Demand Notes [Line Items]                            
Debt instrument, periodic payment, interest                 1,000,000          
Pay to Play warrants [Member] | 2022 Note Purchase and Exchange Agreement [Member]                            
Convertible Notes and Demand Notes [Line Items]                            
Raising capital of gross proceeds                   $ 5,000,000        
Pro rata basis of consideration                 $ 20,000,000          
Pay to Play warrants [Member] | Exchange Agreement [Member]                            
Convertible Notes and Demand Notes [Line Items]                            
Proceeds from issuance of warrants $ 100,000                          
Unsecured Convertible Promissory Note [Member] | Working Capital Loans Warrant [Member] | BURTECH ACQUISITION CORP [Member]                            
Convertible Notes and Demand Notes [Line Items]                            
Price per which the outstanding principal amount can be converted                       $ 10    
Amount borrowed                       $ 1,500,000