v3.26.1
Share-Based Compensation - Summary of Group's option activities (Details) - 2015 Plan and the 2018 Plan
$ / shares in Units, ¥ in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2025
USD ($)
$ / shares
shares
Dec. 31, 2025
CNY (¥)
shares
Dec. 31, 2024
USD ($)
$ / shares
shares
Dec. 31, 2024
CNY (¥)
shares
Dec. 31, 2023
$ / shares
Dec. 31, 2023
CNY (¥)
Dec. 31, 2025
CNY (¥)
shares
Number of share options              
Outstanding at beginning of the year (in shares) | shares 390,422,524 390,422,524          
Granted (in shares) | shares 3,501,400 3,501,400          
Forfeited (in shares) | shares (8,743,700) (8,743,700)          
Exercised (in shares) | shares (29,991,124) (29,991,124)          
Outstanding at end of the year (in shares) | shares 355,189,100 355,189,100 390,422,524 390,422,524      
Vested and expected to vest at end of the year (in shares) | shares 355,189,100           355,189,100
Exercisable at end of the year (in shares) | shares 291,003,700           291,003,700
Weighted average exercise price              
Outstanding at beginning of the year (in dollars per share) $ 0.0065            
Granted (in dollars per share) 0.0065            
Forfeited (in dollars per share) 0.0065            
Exercised (in dollars per share) 0.0065            
Outstanding at end of the year (in dollars per share) 0.0065   $ 0.0065        
Vested and expected to vest at end of the year (in dollars per share) 0.0065            
Exercisable at end of the year (in dollars per share) 0.0065            
Weighted average grant date fair value              
Outstanding at beginning of the year 11.4851            
Granted 28.4508   30.9747   $ 24.5402    
Forfeited 15.7685            
Exercised 6.1302            
Outstanding at end of the year 11.9991   $ 11.4851        
Vested and expected to vest at end of the year 11.9991            
Exercisable at end of the year $ 9.1819            
Aggregate intrinsic value              
Outstanding at beginning of the year (in dollars) | $ $ 9,464,232            
Exercised (in dollars) 911,541 ¥ 6,374,494   ¥ 6,053,177   ¥ 24,817,686  
Outstanding at end of the year (in dollars) | $ 10,066,414   $ 9,464,232        
Vested and expected to vest at end of the year (in dollars) | $ 10,066,414            
Exercisable at end of the year (in dollars) | $ $ 8,247,336            
Weighted average remaining contractual term              
Outstanding (in years) 14 years 21 days 14 years 21 days 14 years 11 months 4 days 14 years 11 months 4 days      
Vested and expected to vest at end of the year (in years) 14 years 21 days 14 years 21 days          
Exercisable at end of the year (in years) 13 years 2 months 26 days 13 years 2 months 26 days          
Fair value of vested options $ 898,083 ¥ 6,280,381   ¥ 6,609,570   ¥ 3,285,026  
Unrecognized share-based compensation expense relating to unvested options $ 1,832,242           ¥ 12,813,052
Weighted-average period for recognition of share-based compensation expense relating to unvested options 1 year 11 months 4 days 1 year 11 months 4 days