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Stock-Based Compensation - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Shares based weighted average grant-date fair value of stock options $ 2.23 $ 2.57
2021 Equity Incentive Plan [Member]    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Share-based compensation arrangement by share-based payment award, description The number of shares of Class A common stock reserved for issuance under the 2021 Plan will automatically increase on January 1 of each year, starting on January 1, 2022 through January 1, 2031, in an amount equal to (1) 4.0% of the total number of shares of Class A common stock and Class B common stock outstanding or issuable upon conversion or exercise of outstanding instruments on December 31 of the preceding year, or (2) a lesser number of shares of Class A common stock determined by our board of directors prior to the date of the increase  
Number of common stock outstanding or issuable, percentage 4.00%  
Employee Stock Purchase Plan [Member]    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Share-based compensation arrangement by share-based payment award, description The number of shares of Class A common stock reserved for issuance under the 2021 ESPP will automatically increase on January 1st of each year, beginning on January 1, 2022 and continuing through and including January 1, 2031, by 1.0% of the total number of shares of Class A common stock and Class B common stock outstanding or issuable upon conversion or exercise of outstanding instruments on December 31st of the preceding calendar year or such lesser number of shares of Class A common stock as determined by our board of directors.  
Number of common stock outstanding or issuable, percentage 1.00%  
Shares based option granted vest period 4 years  
Shares based option granted expiration period 10 years  
Common Class A [Member] | Maximum [Member] | 2021 Equity Incentive Plan [Member]    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Number of common shares issuable under the plan (in shares) 50,684,047  
Common Stock, Capital Shares Reserved for Future Issuance 152,052,141  
Common Class A [Member] | Maximum [Member] | Employee Stock Purchase Plan [Member]    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Number of common shares issuable under the plan (in shares) 4,750,354  
Tranche One    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Shares based option granted vest period 3 years  
Shares Based Stock Option Granted Vesting Percentage 20.00%  
Tranche Two    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Shares based option granted vest period 4 years  
Shares Based Stock Option Granted Vesting Percentage   20.00%
Tranche Three    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Shares based option granted vest period 5 years  
Shares Based Stock Option Granted Vesting Percentage 60.00%  
Options with Service Market And Performance Conditions    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Shares based weighted average grant-date fair value of stock options $ 3.95 $ 4.03
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total $ 3.3  
Share Based Compensation Arrangement By Share Based By Weighted Average Period 1 year 9 months 18 days  
Restricted Stock Units RSU [Member]    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Shares based weighted average grant-date fair value of stock options $ 3.23  
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total $ 0.5  
Share Based Compensation Arrangement By Share Based By Weighted Average Period 3 years 2 months 12 days  
Options with Service Conditions [Member]    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total $ 48.4  
Share Based Compensation Arrangement By Share Based By Weighted Average Period 2 years 7 months 6 days