v3.26.1
Stock-based Compensation - Additional Information (Details) - USD ($)
1 Months Ended 3 Months Ended 5 Months Ended
May 21, 2024
Jul. 31, 2021
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2021
Dec. 31, 2025
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Common stock reserved for future issuance     78,234,040     64,798,899
Stock-based compensation     $ 8,460,000 $ 6,713,000    
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     58,411,166     47,461,519
Stock vesting period     4 years      
Weighted-average grant date fair value of options granted     $ 7.27 $ 1.26    
Unrecognized compensation cost related to unvested stock option grants     $ 106,400,000      
Unrecognized compensation cost expected to be recognized as expense, period     2 years 9 months      
Intrinsic value of options exercised     $ 4.1 $ 74,000    
Share-based compensation, options granted that vest based on performance milestone     11,722,459      
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     16,010,142      
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     $ 891,000      
Unrecognized compensation cost expected to be recognized as expense, period     1 year 2 months 26 days      
Stock-based compensation     $ 186,000 $ 214,000    
Share-based payment arrangement, withheld on behalf of employees for future purchase     $ 464,000     $ 67,000
Offering period   24 months        
Purchase period   6 months        
ESPP | Minimum            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Percentage of fair market value of common stock   85.00%