Quarterly report [Sections 13 or 15(d)]

Fair Value Measurements - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details)

v3.26.1
Fair Value Measurements - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Assets measured at fair value    
Cash equivalents $ 607,092 $ 218,080
Fair value 1,633,965 1,167,106
Total fair value of assets 2,241,057 1,385,186
Liabilities measured at fair value    
Warrant liability 21,505 104,878
Earnout shares liability 95,565 156,692
EBITDA Earnout liability 17,500 13,424
Total fair value of liabilities 134,570 274,994
Money market funds    
Assets measured at fair value    
Cash equivalents 607,092 218,080
Common stock warrant liabilities (Public)    
Liabilities measured at fair value    
Warrant liability 5,126 56,392
Common stock warrant liabilities (Delta)    
Liabilities measured at fair value    
Warrant liability 16,379 48,486
Term deposits    
Assets measured at fair value    
Fair value 30,268 30,937
Asset-backed securities    
Assets measured at fair value    
Fair value 42,608 94,183
Government debt securities    
Assets measured at fair value    
Fair value 1,291,229 641,172
Corporate debt securities    
Assets measured at fair value    
Fair value 269,860 400,814
Level 1    
Assets measured at fair value    
Cash equivalents 607,092 218,080
Fair value 0 0
Total fair value of assets 607,092 218,080
Liabilities measured at fair value    
Warrant liability 5,126 56,392
Earnout shares liability 0 0
EBITDA Earnout liability 0 0
Total fair value of liabilities 5,126 56,392
Level 1 | Money market funds    
Assets measured at fair value    
Cash equivalents 607,092 218,080
Level 1 | Common stock warrant liabilities (Public)    
Liabilities measured at fair value    
Warrant liability 5,126 56,392
Level 1 | Common stock warrant liabilities (Delta)    
Liabilities measured at fair value    
Warrant liability 0 0
Level 1 | Term deposits    
Assets measured at fair value    
Fair value 0 0
Level 1 | Asset-backed securities    
Assets measured at fair value    
Fair value 0 0
Level 1 | Government debt securities    
Assets measured at fair value    
Fair value 0 0
Level 1 | Corporate debt securities    
Assets measured at fair value    
Fair value 0 0
Level 2    
Assets measured at fair value    
Cash equivalents 0 0
Fair value 1,633,965 1,167,106
Total fair value of assets 1,633,965 1,167,106
Liabilities measured at fair value    
Warrant liability 0 0
Earnout shares liability 0 0
EBITDA Earnout liability 0 0
Total fair value of liabilities 0 0
Level 2 | Money market funds    
Assets measured at fair value    
Cash equivalents 0 0
Level 2 | Common stock warrant liabilities (Public)    
Liabilities measured at fair value    
Warrant liability 0 0
Level 2 | Common stock warrant liabilities (Delta)    
Liabilities measured at fair value    
Warrant liability 0 0
Level 2 | Term deposits    
Assets measured at fair value    
Fair value 30,268 30,937
Level 2 | Asset-backed securities    
Assets measured at fair value    
Fair value 42,608 94,183
Level 2 | Government debt securities    
Assets measured at fair value    
Fair value 1,291,229 641,172
Level 2 | Corporate debt securities    
Assets measured at fair value    
Fair value 269,860 400,814
Level 3    
Assets measured at fair value    
Cash equivalents 0 0
Fair value 0 0
Total fair value of assets 0 0
Liabilities measured at fair value    
Warrant liability 16,379 48,486
Earnout shares liability 95,565 156,692
EBITDA Earnout liability 17,500 13,424
Total fair value of liabilities 129,444 218,602
Level 3 | Money market funds    
Assets measured at fair value    
Cash equivalents 0 0
Level 3 | Common stock warrant liabilities (Public)    
Liabilities measured at fair value    
Warrant liability 0 0
Level 3 | Common stock warrant liabilities (Delta)    
Liabilities measured at fair value    
Warrant liability 16,379 48,486
Level 3 | Term deposits    
Assets measured at fair value    
Fair value 0 0
Level 3 | Asset-backed securities    
Assets measured at fair value    
Fair value 0 0
Level 3 | Government debt securities    
Assets measured at fair value    
Fair value 0 0
Level 3 | Corporate debt securities    
Assets measured at fair value    
Fair value $ 0 $ 0