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Stock-Based Compensation - Additional Information (Details)
$ / shares in Units, $ in Thousands
 1 Months Ended 12 Months Ended
Sep. 16, 2021
$ / shares
shares
Jun. 30, 2025
USD ($)
Apr. 30, 2024
founder
$ / shares
shares
Dec. 31, 2025
USD ($)
installment
condition
stockOption
hurdle
$ / shares
shares
Dec. 31, 2024
USD ($)
$ / shares
shares
Dec. 31, 2023
USD ($)
$ / shares
Nov. 15, 2021
$ / shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Total common stock reserved for future issuances (in shares)       13,461,107      
Share-based compensation arrangement, common stock reserved for issuance, automatic increase term       10 years      
Types of time-based stock options | stockOption       2      
Stock options, number of annual installments | installment       3      
Stock options expiration period       10 years      
Aggregate intrinsic value of stock options exercised | $         $ 900 $ 9,100  
Granted (in shares)       171,875      
Number of vesting conditions | condition       2      
Options, grants in period, weighted average grant date fair value (in dollars per share) | $ / shares       $ 7.48 $ 11.35 $ 57.20  
Risk-free interest rate       4.06% 4.27% 3.94%  
Expected volatility       100.00% 97.00% 93.00%  
Expected dividend rate       0.00% 0.00% 0.00%  
Total | $       $ 81,546 $ 112,344 $ 229,884  
Exercise of stock options (in shares)       0      
500 Then 25%              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Share price (in dollars per share) | $ / shares             $ 500
Earnout Shares | Minimum              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Vesting period 20 days            
Earnout Shares | Maximum              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Vesting period 30 days            
Employee Stock Option              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Total common stock reserved for future issuances (in shares)       366,567      
Unrecognized compensation expense | $       $ 1,500      
Unrecognized stock-based compensation recognition period       2 years 3 months 18 days      
Escrow Shares              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Vesting period       4 years      
Share-based compensation arrangement by share-based payment award vesting rights, percentage       25.00%      
Unvested RSUs              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Total common stock reserved for future issuances (in shares)       1,262,853      
Unrecognized compensation expense | $       $ 58,300      
Unrecognized stock-based compensation recognition period       1 year 9 months 18 days      
Options, grants in period, weighted average grant date fair value (in dollars per share) | $ / shares         $ 43.81 $ 55.60  
Fair value of vested stock options | $       $ 87,600 $ 232,900 $ 365,300  
Granted (in dollars per share) | $ / shares       $ 8.02      
Earnout RSUs              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Unrecognized compensation expense | $       $ 0      
Fair value of vested stock options | $       $ 200 $ 4,500 $ 7,600  
Founder Options              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Number of company founders | founder     4        
Granted (in shares)     125,000        
Grants in period, exercise price (in dollars per share) | $ / shares     $ 100 $ 7.80      
Number of stock price hurdles | hurdle       4      
Vesting period       5 years      
Risk-free interest rate       4.65%      
Expected volatility       72.00%      
Suboptimal exercise multiple       2.8      
Expected dividend rate       0.00%      
Founder Options | 500 Then 25%              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Share-based payment arrangement, options vested, percentage       0.10      
Share price (in dollars per share) | $ / shares       $ 200      
Founder Options | 600 Then 25%              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Share-based payment arrangement, options vested, percentage       0.10      
Share price (in dollars per share) | $ / shares       $ 300      
Founder Options | 700 Then 25%              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Share-based payment arrangement, options vested, percentage       0.20      
Share price (in dollars per share) | $ / shares       $ 400      
Founder Options | 800 Then 25%              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Share-based payment arrangement, options vested, percentage       0.60      
Share price (in dollars per share) | $ / shares       $ 500      
Performance Shares              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Total common stock reserved for future issuances (in shares)       4,407,287      
Unrecognized compensation expense | $       $ 7,300      
Unrecognized stock-based compensation recognition period       3 months 18 days      
Granted (in dollars per share) | $ / shares       $ 8.01      
Performance Shares | Minimum              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Share-based compensation arrangement by share-based payment award vesting rights, percentage       0.00%      
Performance Shares | Maximum              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Share-based compensation arrangement by share-based payment award vesting rights, percentage       100.00%      
Founder PSU Awards              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Total | $   $ 10,500          
Common Stock | Earnout Shares | 500 Then 25%              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Share price (in dollars per share) | $ / shares $ 500            
Common Stock | Earnout Shares | 600 Then 25%              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Share price (in dollars per share) | $ / shares 600            
Common Stock | Earnout Shares | 700 Then 25%              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Share price (in dollars per share) | $ / shares 700            
Common Stock | Earnout Shares | 800 Then 25%              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Share price (in dollars per share) | $ / shares $ 800            
2022 Inducement Plan Member              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Total common stock reserved for future issuances (in shares)       292,172      
2022 Inducement Plan Member | Common Stock              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Total common stock reserved for future issuances (in shares)         625,000    
2021 Incentive Award Plan              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Total common stock reserved for future issuances (in shares)       3,336,606      
Shares issued in period (in shares) 5,011,024            
Share-based payment award, percentage of outstanding stock 4.00%            
Number of shares to be issued pursuant to awards granted (in shares) 5,000,000,000,000            
2021 Employee Stock Purchase Plan              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Total common stock reserved for future issuances (in shares)       2,500,000      
Share-based payment award, percentage of outstanding stock 1.00%            
Number of shares to be issued pursuant to awards granted (in shares) 2,500,000,000,000     2,500,000,000,000      
Percentage of non-participation of combined voting power or value of all classes of stock 5.00%            
Number of shares authorized (in shares) 500,000,000,000            
Granted (in shares)       0