v3.26.1
Stock-based Compensation - Additional Information (Details) - USD ($)
1 Months Ended 3 Months Ended 5 Months Ended 6 Months Ended
May 21, 2024
Jul. 31, 2021
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2021
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Common stock reserved for future issuance     76,484,722     76,484,722   64,798,899
Stock-based compensation     $ 9,606,000 $ 6,398,000   $ 18,066,000 $ 13,111,000  
Minimum                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Share-based compensation, common stock grant in period, term           5 years    
Employee Stock Option                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Common stock reserved for future issuance     57,641,453     57,641,453   47,461,519
Stock vesting period           4 years    
Weighted-average grant date fair value of options granted     $ 10.09 $ 1.02   $ 7.36 $ 1.25  
Unrecognized compensation cost related to unvested stock option grants     $ 100,800,000     $ 100,800,000    
Unrecognized compensation cost expected to be recognized as expense, period           2 years 7 months 17 days    
Intrinsic value of options exercised     $ 13,100,000 $ 58,000   $ 17,300,000 $ 132,000  
Share-based compensation, options granted that vest based on performance milestone           12,095,787    
Employee Stock Option | Minimum | At the Time Option is Granted                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Percentage of fair market value of common stock           100.00%    
Employee Stock Option | Minimum | For Holders of More Than 10% of Company's Total Combined Voting Power of All Classes of Stock                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Percentage of fair market value of common stock           110.00%    
Employee Stock Option | Maximum                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Share-based compensation, plan expiration period           10 years    
Option Repricing | Black-Scholes Option Pricing Model                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Share-based payment arrangement, incremental cost $ 1,100,000              
Option Repricing | Straight-line Basis Through Premium End Date                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Share-based payment arrangement, incremental cost 559,000              
Option Repricing | Straight-line Basis Over Greater of Period Through Premium End Date                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Share-based payment arrangement, incremental cost $ 558,000              
2018 Equity Incentive Plan                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Share-based compensation, options granted that vest based on performance milestone         0      
2021 Incentive Award Plan                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Common stock reserved for future issuance     15,636,814     15,636,814    
Shares of common stock, authorized for issuance   15,150,000            
Percentage of outstanding common stock maximum   5.00%            
2021 Incentive Award Plan | Option Repricing                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Share-based compensation, options repriced 7,478,918              
Decrease in stock option, exercise price $ 2.35              
ESPP                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Common stock reserved for future issuance   1,260,000            
Unrecognized compensation cost related to unvested stock option grants     $ 905,000     $ 905,000    
Unrecognized compensation cost expected to be recognized as expense, period           1 year 7 days    
Stock-based compensation     278,000 $ 247,000   $ 464,000 $ 461,000  
Share-based payment arrangement, withheld on behalf of employees for future purchase     $ 121,000     $ 121,000   $ 67,000
Offering period   24 months            
Purchase period   6 months            
Shares issued under ESPP     606,277 321,091   606,277 321,091  
ESPP | Minimum                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Percentage of fair market value of common stock   85.00%