v3.26.1
Stock-Based Compensation - Schedule of Stock Option Activity (Details) - Stock options
 6 Months Ended 12 Months Ended
Jun. 30, 2026
$ / shares
shares
Dec. 31, 2025
$ / shares
shares
Number of Options    
Beginning balance (in shares) | shares 119,464,728  
Granted (in shares) | shares 5,092,636  
Forfeited (in shares) | shares (4,938,700)  
Exercised (in shares) | shares (1,250,849)  
Ending balance (in shares) | shares 118,367,815 119,464,728
Stock options vested or expected to vest (in shares) | shares 113,153,918  
Stock options exercisable (in shares) | shares 67,128,849  
Weighted average exercise price    
Beginning balance (in dollars per share) | $ / shares $ 4.14  
Granted (in dollars per share) | $ / shares 17.15  
Forfeited (in dollars per share) | $ / shares 9.69  
Exercised (in dollars per share) | $ / shares 5.22  
Ending balance (in dollars per share) | $ / shares 4.45 $ 4.14
Stock options vested or expected to vest (in dollars per share) | $ / shares 4.35  
Stock options exercisable (in dollars per share) | $ / shares $ 2.76  
Weighted average remaining contractual term (years)    
Outstanding at end of period, weighted average remaining contractual life 7 years 4 months 24 days 7 years 9 months 18 days
Vested and expected to vest at end of period, weighted average remaining contractual life 7 years 3 months 18 days  
Exercisable at end of period, weighted average remaining contractual life 7 years