v3.26.1
Stock-based Compensation - Summary of Stock Option Activity (Details) - Employee Stock Option
$ / shares in Units, $ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
$ / shares
shares
Dec. 31, 2025
USD ($)
$ / shares
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Shares Outstanding at December 31, 2025 | shares 47,461,519  
Shares Granted | shares 12,095,787  
Shares Exercised | shares (1,915,853)  
Shares Canceled | shares 0  
Shares Outstanding at June 30, 2026 | shares 57,641,453 47,461,519
Shares Options exercisable at June 30, 2026 | shares 31,270,789  
Weighted-average exercise price, Outstanding at December 31, 2025 | $ / shares $ 3.24  
Weighted-average exercise price, Granted | $ / shares 10.39  
Weighted-average exercise price, Exercised | $ / shares 2.38  
Weighted-average exercise price, Canceled | $ / shares 0  
Weighted-average exercise price, Outstanding at June 30, 2026 | $ / shares 4.29 $ 3.24
Weighted-average exercise price, Options exercisable at June 30, 2026 | $ / shares $ 3.35  
Weighted-average remaining contractual term (years), Outstanding 7 years 7 months 9 days 7 years 6 months 18 days
Weighted-average remaining contractual term (years), Options exercisable at June 30, 2026 6 years 7 months 28 days  
Aggregate intrinsic value, Outstanding | $ $ 808,594 $ 61,659
Aggregate intrinsic value, Options exercisable at June 30, 2026 | $ $ 468,155